diff --git a/Cargo.lock b/Cargo.lock
index 5a6ddc0..7594e42 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -18,6 +18,12 @@ version = "0.1.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "366ffbaa4442f4684d91e2cd7c5ea7c4ed8add41959a31447066e279e432b618"
 
+[[package]]
+name = "adler2"
+version = "2.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "320119579fcad9c21884f5c4861d16174d0e06250625266f50fe6898340abefa"
+
 [[package]]
 name = "aead"
 version = "0.5.2"
@@ -75,6 +81,24 @@ dependencies = [
  "memchr",
 ]
 
+[[package]]
+name = "aligned"
+version = "0.4.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ee4508988c62edf04abd8d92897fca0c2995d907ce1dfeaf369dac3716a40685"
+dependencies = [
+ "as-slice",
+]
+
+[[package]]
+name = "aligned-vec"
+version = "0.6.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dc890384c8602f339876ded803c97ad529f3842aba97f6392b3dba0dd171769b"
+dependencies = [
+ "equator",
+]
+
 [[package]]
 name = "allocator-api2"
 version = "0.2.21"
@@ -146,6 +170,12 @@ version = "1.0.102"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7f202df86484c868dbad7eaa557ef785d5c66295e41b460ef922eca0723b842c"
 
+[[package]]
+name = "arbitrary"
+version = "1.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c3d036a3c4ab069c7b410a2ce876bd74808d2d0888a82667669f8e783a898bf1"
+
 [[package]]
 name = "arc-swap"
 version = "1.9.1"
@@ -155,6 +185,17 @@ dependencies = [
  "rustversion",
 ]
 
+[[package]]
+name = "arg_enum_proc_macro"
+version = "0.3.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0ae92a5119aa49cdbcf6b9f893fe4e1d98b04ccbf82ee0584ad948a44a734dea"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "arrayref"
 version = "0.3.9"
@@ -173,6 +214,15 @@ version = "1.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "175571dd1d178ced59193a6fc02dde1b972eb0bc56c892cde9beeceac5bf0f6b"
 
+[[package]]
+name = "as-slice"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "516b6b4f0e40d50dcda9365d53964ec74560ad4284da2e7fc97122cd83174516"
+dependencies = [
+ "stable_deref_trait",
+]
+
 [[package]]
 name = "ash"
 version = "0.38.0+1.3.281"
@@ -359,6 +409,49 @@ version = "1.5.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f2032f911046de80f0a198e0901378627c33f59ea0ac00e363d481118bd70a53"
 
+[[package]]
+name = "av-scenechange"
+version = "0.14.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0f321d77c20e19b92c39e7471cf986812cbb46659d2af674adc4331ef3f18394"
+dependencies = [
+ "aligned",
+ "anyhow",
+ "arg_enum_proc_macro",
+ "arrayvec",
+ "log",
+ "num-rational",
+ "num-traits",
+ "pastey",
+ "rayon",
+ "thiserror 2.0.18",
+ "v_frame",
+ "y4m",
+]
+
+[[package]]
+name = "av1-grain"
+version = "0.2.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8cfddb07216410377231960af4fcab838eaa12e013417781b78bd95ee22077f8"
+dependencies = [
+ "anyhow",
+ "arrayvec",
+ "log",
+ "nom 8.0.0",
+ "num-rational",
+ "v_frame",
+]
+
+[[package]]
+name = "avif-serialize"
+version = "0.8.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e7178fe5f7d460b13895ebb9dcb28a3a6216d2df2574a0806cb51b555d297f38"
+dependencies = [
+ "arrayvec",
+]
+
 [[package]]
 name = "backon"
 version = "1.6.0"
@@ -398,7 +491,7 @@ dependencies = [
  "bitflags 2.11.1",
  "cexpr",
  "clang-sys",
- "itertools",
+ "itertools 0.13.0",
  "proc-macro2",
  "quote",
  "regex",
@@ -422,6 +515,12 @@ version = "0.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5e764a1d40d510daf35e07be9eb06e75770908c27d411ee6c92109c9840eaaf7"
 
+[[package]]
+name = "bit_field"
+version = "0.10.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1e4b40c7323adcfc0a41c4b88143ed58346ff65a288fc144329c5c45e05d70c6"
+
 [[package]]
 name = "bitflags"
 version = "1.3.2"
@@ -434,6 +533,15 @@ version = "2.11.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c4512299f36f043ab09a583e57bceb5a5aab7a73db1805848e8fef3c9e8c78b3"
 
+[[package]]
+name = "bitstream-io"
+version = "4.10.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7eff00be299a18769011411c9def0d827e8f2d7bf0c3dbf53633147a8867fd1f"
+dependencies = [
+ "no_std_io2",
+]
+
 [[package]]
 name = "blake3"
 version = "1.8.5"
@@ -494,6 +602,12 @@ dependencies = [
  "piper",
 ]
 
+[[package]]
+name = "built"
+version = "0.8.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5c0e531d93d39c34eef561e929e8a7f86d77a5af08aac4f6d6e39976c51858e9"
+
 [[package]]
 name = "bumpalo"
 version = "3.20.3"
@@ -520,6 +634,12 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "byteorder-lite"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8f1fe948ff07f4bd06c30984e69f5b4899c516a3ef74f34df92a2df2ab535495"
+
 [[package]]
 name = "bytes"
 version = "1.11.1"
@@ -631,7 +751,7 @@ checksum = "6f8d983286843e49675a4b7a2d174efe136dc93a18d69130dd18198a6c167601"
 dependencies = [
  "cfg-if",
  "cpufeatures 0.3.0",
- "rand_core",
+ "rand_core 0.10.1",
 ]
 
 [[package]]
@@ -741,6 +861,12 @@ dependencies = [
  "unicode-width",
 ]
 
+[[package]]
+name = "color_quant"
+version = "1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3d7b894f5411737b7867f4827955924d7c254fc9f4d91a6aad6b097804b1018b"
+
 [[package]]
 name = "combine"
 version = "4.6.7"
@@ -918,6 +1044,15 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "crc32fast"
+version = "1.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9481c1c90cbf2ac953f07c8d4a58aa3945c425b7185c9154d67a65e4230da511"
+dependencies = [
+ "cfg-if",
+]
+
 [[package]]
 name = "critical-section"
 version = "1.2.0"
@@ -933,6 +1068,16 @@ dependencies = [
  "crossbeam-utils",
 ]
 
+[[package]]
+name = "crossbeam-deque"
+version = "0.8.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9dd111b7b7f7d55b72c0a6ae361660ee5853c9af73f70c3c2ef6858b950e2e51"
+dependencies = [
+ "crossbeam-epoch",
+ "crossbeam-utils",
+]
+
 [[package]]
 name = "crossbeam-epoch"
 version = "0.9.18"
@@ -1030,7 +1175,7 @@ dependencies = [
  "curve25519-dalek-derive",
  "digest",
  "fiat-crypto",
- "rand_core",
+ "rand_core 0.10.1",
  "rustc_version",
  "serde",
  "subtle",
@@ -1316,7 +1461,7 @@ checksum = "20449acd54b660981ae5caa2bcb56d1fe7f25f2e37a38ec507400fab034d4bb6"
 dependencies = [
  "curve25519-dalek",
  "ed25519",
- "rand_core",
+ "rand_core 0.10.1",
  "serde",
  "sha2",
  "signature",
@@ -1380,6 +1525,26 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "equator"
+version = "0.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4711b213838dfee0117e3be6ac926007d7f433d7bbe33595975d4190cb07e6fc"
+dependencies = [
+ "equator-macro",
+]
+
+[[package]]
+name = "equator-macro"
+version = "0.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "44f23cf4b44bfce11a86ace86f8a73ffdec849c9fd00a386a53d278bd9e81fb3"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "equivalent"
 version = "1.0.2"
@@ -1442,12 +1607,42 @@ dependencies = [
  "pin-project-lite",
 ]
 
+[[package]]
+name = "exr"
+version = "1.74.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4300e043a56aa2cb633c01af81ca8f699a321879a7854d3896a0ba89056363be"
+dependencies = [
+ "bit_field",
+ "half",
+ "lebe",
+ "miniz_oxide",
+ "rayon-core",
+ "smallvec",
+ "zune-inflate",
+]
+
 [[package]]
 name = "fastrand"
 version = "2.4.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9f1f227452a390804cdb637b74a86990f2a7d7ba4b7d5693aac9b4dd6defd8d6"
 
+[[package]]
+name = "fax"
+version = "0.2.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "caf1079563223d5d59d83c85886a56e586cfd5c1a26292e971a0fa266531ac5a"
+
+[[package]]
+name = "fdeflate"
+version = "0.3.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1e6853b52649d4ac5c0bd02320cddc5ba956bdb407c4b75a2c6b75bf51500f8c"
+dependencies = [
+ "simd-adler32",
+]
+
 [[package]]
 name = "fiat-crypto"
 version = "0.3.0"
@@ -1466,6 +1661,16 @@ version = "0.5.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1d674e81391d1e1ab681a28d99df07927c6d4aa5b027d7da16ba32d1d21ecd99"
 
+[[package]]
+name = "flate2"
+version = "1.1.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "843fba2746e448b37e26a819579957415c8cef339bf08564fe8b7ddbd959573c"
+dependencies = [
+ "crc32fast",
+ "miniz_oxide",
+]
+
 [[package]]
 name = "float_next_after"
 version = "1.0.0"
@@ -1764,7 +1969,7 @@ dependencies = [
  "js-sys",
  "libc",
  "r-efi 6.0.0",
- "rand_core",
+ "rand_core 0.10.1",
  "wasip2",
  "wasip3",
  "wasm-bindgen",
@@ -1780,6 +1985,16 @@ dependencies = [
  "polyval",
 ]
 
+[[package]]
+name = "gif"
+version = "0.14.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ee8cfcc411d9adbbaba82fb72661cc1bcca13e8bba98b364e62b2dba8f960159"
+dependencies = [
+ "color_quant",
+ "weezl",
+]
+
 [[package]]
 name = "gl_generator"
 version = "0.14.0"
@@ -2013,7 +2228,7 @@ dependencies = [
  "idna",
  "ipnet",
  "jni",
- "rand",
+ "rand 0.10.1",
  "rustls",
  "thiserror 2.0.18",
  "tinyvec",
@@ -2035,7 +2250,7 @@ dependencies = [
  "jni",
  "once_cell",
  "prefix-trie",
- "rand",
+ "rand 0.10.1",
  "ring",
  "thiserror 2.0.18",
  "tinyvec",
@@ -2060,7 +2275,7 @@ dependencies = [
  "ndk-context",
  "once_cell",
  "parking_lot",
- "rand",
+ "rand 0.10.1",
  "resolv-conf",
  "rustls",
  "smallvec",
@@ -2222,6 +2437,7 @@ dependencies = [
  "iced_runtime",
  "iced_widget",
  "iced_winit",
+ "image",
  "thiserror 2.0.18",
 ]
 
@@ -2280,6 +2496,8 @@ dependencies = [
  "half",
  "iced_core",
  "iced_futures",
+ "image",
+ "kamadak-exif",
  "log",
  "lyon_path",
  "raw-window-handle",
@@ -2530,12 +2748,52 @@ dependencies = [
  "hyper",
  "hyper-util",
  "log",
- "rand",
+ "rand 0.10.1",
  "tokio",
  "url",
  "xmltree",
 ]
 
+[[package]]
+name = "image"
+version = "0.25.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "85ab80394333c02fe689eaf900ab500fbd0c2213da414687ebf995a65d5a6104"
+dependencies = [
+ "bytemuck",
+ "byteorder-lite",
+ "color_quant",
+ "exr",
+ "gif",
+ "image-webp",
+ "moxcms",
+ "num-traits",
+ "png",
+ "qoi",
+ "ravif",
+ "rayon",
+ "rgb",
+ "tiff",
+ "zune-core",
+ "zune-jpeg",
+]
+
+[[package]]
+name = "image-webp"
+version = "0.2.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "525e9ff3e1a4be2fbea1fdf0e98686a6d98b4d8f937e1bf7402245af1909e8c3"
+dependencies = [
+ "byteorder-lite",
+ "quick-error",
+]
+
+[[package]]
+name = "imgref"
+version = "1.12.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "40fac9d56ed6437b198fddba683305e8e2d651aa42647f00f5ae542e7f5c94a2"
+
 [[package]]
 name = "indexmap"
 version = "2.14.0"
@@ -2557,6 +2815,17 @@ dependencies = [
  "generic-array",
 ]
 
+[[package]]
+name = "interpolate_name"
+version = "0.2.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c34819042dc3d3971c46c2190835914dfbe0c3c13f61449b2997f4e9722dfa60"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "ipconfig"
 version = "0.3.4"
@@ -2613,7 +2882,7 @@ dependencies = [
  "pin-project",
  "portable-atomic",
  "portmapper",
- "rand",
+ "rand 0.10.1",
  "reqwest",
  "rustc-hash 2.1.2",
  "rustls",
@@ -2646,7 +2915,7 @@ dependencies = [
  "ed25519-dalek",
  "getrandom 0.4.2",
  "n0-error",
- "rand",
+ "rand 0.10.1",
  "serde",
  "sha2",
  "url",
@@ -2668,7 +2937,7 @@ dependencies = [
  "n0-error",
  "n0-future",
  "ndk-context",
- "rand",
+ "rand 0.10.1",
  "reqwest",
  "rustls",
  "simple-dns",
@@ -2702,7 +2971,7 @@ dependencies = [
  "n0-error",
  "n0-future",
  "postcard",
- "rand",
+ "rand 0.10.1",
  "serde",
  "tokio",
  "tokio-util",
@@ -2764,7 +3033,7 @@ dependencies = [
  "num_enum",
  "pin-project",
  "postcard",
- "rand",
+ "rand 0.10.1",
  "reqwest",
  "rustls",
  "rustls-pki-types",
@@ -2818,6 +3087,15 @@ dependencies = [
  "either",
 ]
 
+[[package]]
+name = "itertools"
+version = "0.14.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2b192c782037fadd9cfa75548310488aabdbf3d2da73885b31bd0abd03351285"
+dependencies = [
+ "either",
+]
+
 [[package]]
 name = "itoa"
 version = "1.0.18"
@@ -2904,6 +3182,15 @@ dependencies = [
  "wasm-bindgen",
 ]
 
+[[package]]
+name = "kamadak-exif"
+version = "0.6.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1130d80c7374efad55a117d715a3af9368f0fa7a2c54573afc15a188cd984837"
+dependencies = [
+ "mutate_once",
+]
+
 [[package]]
 name = "khronos-egl"
 version = "6.0.0"
@@ -2943,12 +3230,28 @@ version = "0.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "09edd9e8b54e49e587e4f6295a7d29c3ea94d469cb40ab8ca70b288248a81db2"
 
+[[package]]
+name = "lebe"
+version = "0.5.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7a79a3332a6609480d7d0c9eab957bca6b455b91bb84e66d19f5ff66294b85b8"
+
 [[package]]
 name = "libc"
 version = "0.2.186"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "68ab91017fe16c622486840e4c83c9a37afeff978bd239b5293d61ece587de66"
 
+[[package]]
+name = "libfuzzer-sys"
+version = "0.4.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f12a681b7dd8ce12bff52488013ba614b869148d54dd79836ab85aafdd53f08d"
+dependencies = [
+ "arbitrary",
+ "cc",
+]
+
 [[package]]
 name = "libloading"
 version = "0.8.9"
@@ -3072,6 +3375,15 @@ dependencies = [
  "tracing-subscriber",
 ]
 
+[[package]]
+name = "loop9"
+version = "0.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0fae87c125b03c1d2c0150c90365d7d6bcc53fb73a9acaef207d2d065860f062"
+dependencies = [
+ "imgref",
+]
+
 [[package]]
 name = "lru"
 version = "0.16.4"
@@ -3169,6 +3481,16 @@ dependencies = [
  "regex-automata",
 ]
 
+[[package]]
+name = "maybe-rayon"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8ea1f30cedd69f0a2954655f7188c6a834246d2bcf1e315e2ac40c4b24dc9519"
+dependencies = [
+ "cfg-if",
+ "rayon",
+]
+
 [[package]]
 name = "memchr"
 version = "2.8.1"
@@ -3214,6 +3536,16 @@ version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "68354c5c6bd36d73ff3feceb05efa59b6acb7626617f4962be322a825e61f79a"
 
+[[package]]
+name = "miniz_oxide"
+version = "0.8.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1fa76a2c86f704bdb222d66965fb3d63269ce38518b83cb0575fca855ebb6316"
+dependencies = [
+ "adler2",
+ "simd-adler32",
+]
+
 [[package]]
 name = "mio"
 version = "1.2.0"
@@ -3242,6 +3574,16 @@ dependencies = [
  "uuid",
 ]
 
+[[package]]
+name = "moxcms"
+version = "0.8.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bb85c154ba489f01b25c0d36ae69a87e4a1c73a72631fc6c0eb6dde34a73e44b"
+dependencies = [
+ "num-traits",
+ "pxfm",
+]
+
 [[package]]
 name = "mundy"
 version = "0.2.3"
@@ -3267,6 +3609,12 @@ dependencies = [
  "zbus",
 ]
 
+[[package]]
+name = "mutate_once"
+version = "0.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "13d2233c9842d08cfe13f9eac96e207ca6a2ea10b80259ebe8ad0268be27d2af"
+
 [[package]]
 name = "n0-error"
 version = "1.0.0-rc.0"
@@ -3497,6 +3845,12 @@ dependencies = [
  "wmi",
 ]
 
+[[package]]
+name = "new_debug_unreachable"
+version = "1.0.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "650eef8c711430f1a879fdd01d4745a7deea475becfb90269c06775983bbf086"
+
 [[package]]
 name = "nix"
 version = "0.30.1"
@@ -3509,6 +3863,15 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "no_std_io2"
+version = "0.9.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "418abd1b6d34fbf6cae440dc874771b0525a604428704c76e48b29a5e67b8003"
+dependencies = [
+ "memchr",
+]
+
 [[package]]
 name = "nom"
 version = "7.1.3"
@@ -3528,6 +3891,12 @@ dependencies = [
  "memchr",
 ]
 
+[[package]]
+name = "noop_proc_macro"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0676bb32a98c1a483ce53e500a81ad9c3d5b3f7c920c28c24e9cb0980d0b5bc8"
+
 [[package]]
 name = "noq"
 version = "1.0.0-rc.0"
@@ -3563,7 +3932,7 @@ dependencies = [
  "getrandom 0.4.2",
  "identity-hash",
  "lru-slab",
- "rand",
+ "rand 0.10.1",
  "rand_pcg",
  "ring",
  "rustc-hash 2.1.2",
@@ -3599,12 +3968,53 @@ dependencies = [
  "windows-sys 0.61.2",
 ]
 
+[[package]]
+name = "num-bigint"
+version = "0.4.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a5e44f723f1133c9deac646763579fdb3ac745e418f2a7af9cd0c431da1f20b9"
+dependencies = [
+ "num-integer",
+ "num-traits",
+]
+
 [[package]]
 name = "num-conv"
 version = "0.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "521739c6d2bac4aa25192232afe6841231376b2b26d4d9fae5ecf8ca5772e441"
 
+[[package]]
+name = "num-derive"
+version = "0.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ed3955f1a9c7c0c15e092f9c887db08b1fc683305fdf6eb6684f22555355e202"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "num-integer"
+version = "0.1.46"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7969661fd2958a5cb096e56c8e1ad0444ac2bbcd0061bd28660485a44879858f"
+dependencies = [
+ "num-traits",
+]
+
+[[package]]
+name = "num-rational"
+version = "0.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f83d14da390562dca69fc84082e73e548e1ad308d24accdedd2720017cb37824"
+dependencies = [
+ "num-bigint",
+ "num-integer",
+ "num-traits",
+]
+
 [[package]]
 name = "num-traits"
 version = "0.2.19"
@@ -4176,6 +4586,12 @@ version = "1.0.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "57c0d7b74b563b49d38dae00a0c37d4d6de9b432382b2892f0574ddcae73fd0a"
 
+[[package]]
+name = "pastey"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "35fb2e5f958ec131621fdd531e9fc186ed768cbe395337403ae56c17a74c68ec"
+
 [[package]]
 name = "peerspeak"
 version = "0.1.0"
@@ -4190,7 +4606,7 @@ dependencies = [
  "iroh-gossip",
  "opus",
  "pipewire",
- "rand",
+ "rand 0.10.1",
  "ringbuf",
  "serde",
  "serde_json",
@@ -4330,6 +4746,19 @@ dependencies = [
  "time",
 ]
 
+[[package]]
+name = "png"
+version = "0.18.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "60769b8b31b2a9f263dae2776c37b1b28ae246943cf719eb6946a1db05128a61"
+dependencies = [
+ "bitflags 2.11.1",
+ "crc32fast",
+ "fdeflate",
+ "flate2",
+ "miniz_oxide",
+]
+
 [[package]]
 name = "polling"
 version = "3.11.0"
@@ -4391,7 +4820,7 @@ dependencies = [
  "n0-future",
  "netwatch",
  "num_enum",
- "rand",
+ "rand 0.10.1",
  "serde",
  "smallvec",
  "socket2",
@@ -4442,6 +4871,15 @@ version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "439ee305def115ba05938db6eb1644ff94165c5ab5e9420d1c1bcedbba909391"
 
+[[package]]
+name = "ppv-lite86"
+version = "0.2.21"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "85eae3c4ed2f50dcfe72643da4befc30deadb458a9b590d720cde2f2b1e97da9"
+dependencies = [
+ "zerocopy",
+]
+
 [[package]]
 name = "prefix-trie"
 version = "0.8.4"
@@ -4492,6 +4930,40 @@ name = "profiling"
 version = "1.0.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3d595e54a326bc53c1c197b32d295e14b169e3cfeaa8dc82b529f947fba6bcf5"
+dependencies = [
+ "profiling-procmacros",
+]
+
+[[package]]
+name = "profiling-procmacros"
+version = "1.0.18"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4488a4a36b9a4ba6b9334a32a39971f77c1436ec82c38707bce707699cc3bbcb"
+dependencies = [
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "pxfm"
+version = "0.1.29"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e0c5ccf5294c6ccd63a74f1565028353830a9c2f5eb0c682c355c471726a6e3f"
+
+[[package]]
+name = "qoi"
+version = "0.4.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7f6d64c71eb498fe9eae14ce4ec935c555749aef511cca85b5568910d6e48001"
+dependencies = [
+ "bytemuck",
+]
+
+[[package]]
+name = "quick-error"
+version = "2.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a993555f31e5a609f617c12db6250dedcac1b0a85076912c436e6fc9b2c8e6a3"
 
 [[package]]
 name = "quick-xml"
@@ -4523,6 +4995,16 @@ version = "6.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f8dcc9c7d52a811697d2151c701e0d08956f92b0e24136cf4cf27b57a6a0d9bf"
 
+[[package]]
+name = "rand"
+version = "0.9.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "44c5af06bb1b7d3216d91932aed5265164bf384dc89cd6ba05cf59a35f5f76ea"
+dependencies = [
+ "rand_chacha",
+ "rand_core 0.9.5",
+]
+
 [[package]]
 name = "rand"
 version = "0.10.1"
@@ -4531,7 +5013,26 @@ checksum = "d2e8e8bcc7961af1fdac401278c6a831614941f6164ee3bf4ce61b7edb162207"
 dependencies = [
  "chacha20",
  "getrandom 0.4.2",
- "rand_core",
+ "rand_core 0.10.1",
+]
+
+[[package]]
+name = "rand_chacha"
+version = "0.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d3022b5f1df60f26e1ffddd6c66e8aa15de382ae63b3a0c1bfc0e4d3e3f325cb"
+dependencies = [
+ "ppv-lite86",
+ "rand_core 0.9.5",
+]
+
+[[package]]
+name = "rand_core"
+version = "0.9.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "76afc826de14238e6e8c374ddcc1fa19e374fd8dd986b0d2af0d02377261d83c"
+dependencies = [
+ "getrandom 0.3.4",
 ]
 
 [[package]]
@@ -4546,7 +5047,7 @@ version = "0.10.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "caa0f4137e1c0a72f4c651489402276c8e8e1cf081f3b0ba156d2cbeef09e86a"
 dependencies = [
- "rand_core",
+ "rand_core 0.10.1",
 ]
 
 [[package]]
@@ -4561,12 +5062,82 @@ version = "1.7.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "973443cf09a9c8656b574a866ab68dfa19f0867d0340648c7d2f6a71b8a8ea68"
 
+[[package]]
+name = "rav1e"
+version = "0.8.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "43b6dd56e85d9483277cde964fd1bdb0428de4fec5ebba7540995639a21cb32b"
+dependencies = [
+ "aligned-vec",
+ "arbitrary",
+ "arg_enum_proc_macro",
+ "arrayvec",
+ "av-scenechange",
+ "av1-grain",
+ "bitstream-io",
+ "built",
+ "cfg-if",
+ "interpolate_name",
+ "itertools 0.14.0",
+ "libc",
+ "libfuzzer-sys",
+ "log",
+ "maybe-rayon",
+ "new_debug_unreachable",
+ "noop_proc_macro",
+ "num-derive",
+ "num-traits",
+ "paste",
+ "profiling",
+ "rand 0.9.4",
+ "rand_chacha",
+ "simd_helpers",
+ "thiserror 2.0.18",
+ "v_frame",
+ "wasm-bindgen",
+]
+
+[[package]]
+name = "ravif"
+version = "0.13.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e52310197d971b0f5be7fe6b57530dcd27beb35c1b013f29d66c1ad73fbbcc45"
+dependencies = [
+ "avif-serialize",
+ "imgref",
+ "loop9",
+ "quick-error",
+ "rav1e",
+ "rayon",
+ "rgb",
+]
+
 [[package]]
 name = "raw-window-handle"
 version = "0.6.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "20675572f6f24e9e76ef639bc5552774ed45f1c30e2951e1e99c59888861c539"
 
+[[package]]
+name = "rayon"
+version = "1.12.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fb39b166781f92d482534ef4b4b1b2568f42613b53e5b6c160e24cfbfa30926d"
+dependencies = [
+ "either",
+ "rayon-core",
+]
+
+[[package]]
+name = "rayon-core"
+version = "1.13.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "22e18b0f0062d30d4230b2e85ff77fdfe4326feb054b9783a3460d8435c8ab91"
+dependencies = [
+ "crossbeam-deque",
+ "crossbeam-utils",
+]
+
 [[package]]
 name = "read-fonts"
 version = "0.35.0"
@@ -4704,6 +5275,12 @@ version = "0.7.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1e061d1b48cb8d38042de4ae0a7a6401009d6143dc80d2e2d6f31f0bdd6470c7"
 
+[[package]]
+name = "rgb"
+version = "0.8.53"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "47b34b781b31e5d73e9fbc8689c70551fd1ade9a19e3e28cfec8580a79290cc4"
+
 [[package]]
 name = "ring"
 version = "0.17.14"
@@ -5094,6 +5671,12 @@ version = "3.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "28d567dcbaf0049cb8ac2608a76cd95ff9e4412e1899d389ee400918ca7537f5"
 
+[[package]]
+name = "simd-adler32"
+version = "0.3.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "703d5c7ef118737c72f1af64ad2f6f8c5e1921f818cdcb97b8fe6fc69bf66214"
+
 [[package]]
 name = "simd_cesu8"
 version = "1.1.1"
@@ -5104,6 +5687,15 @@ dependencies = [
  "simdutf8",
 ]
 
+[[package]]
+name = "simd_helpers"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "95890f873bec569a0362c235787f3aca6e1e887302ba4840839bcc6459c42da6"
+dependencies = [
+ "quote",
+]
+
 [[package]]
 name = "simdutf8"
 version = "0.1.5"
@@ -5540,6 +6132,20 @@ dependencies = [
  "cfg-if",
 ]
 
+[[package]]
+name = "tiff"
+version = "0.11.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b63feaf3343d35b6ca4d50483f94843803b0f51634937cc2ec519fc32232bc52"
+dependencies = [
+ "fax",
+ "flate2",
+ "half",
+ "quick-error",
+ "weezl",
+ "zune-jpeg",
+]
+
 [[package]]
 name = "time"
 version = "0.3.47"
@@ -5714,7 +6320,7 @@ dependencies = [
  "getrandom 0.4.2",
  "http",
  "httparse",
- "rand",
+ "rand 0.10.1",
  "ring",
  "rustls-pki-types",
  "sha1_smol",
@@ -6003,6 +6609,17 @@ dependencies = [
  "wasm-bindgen",
 ]
 
+[[package]]
+name = "v_frame"
+version = "0.3.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "666b7727c8875d6ab5db9533418d7c764233ac9c0cff1d469aec8fa127597be2"
+dependencies = [
+ "aligned-vec",
+ "num-traits",
+ "wasm-bindgen",
+]
+
 [[package]]
 name = "valuable"
 version = "0.1.1"
@@ -6390,6 +7007,12 @@ dependencies = [
  "rustls-pki-types",
 ]
 
+[[package]]
+name = "weezl"
+version = "0.1.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a28ac98ddc8b9274cb41bb4d9d4d5c425b6020c50c46f25559911905610b4a88"
+
 [[package]]
 name = "wgpu"
 version = "27.0.1"
@@ -7126,6 +7749,12 @@ dependencies = [
  "xml-rs",
 ]
 
+[[package]]
+name = "y4m"
+version = "0.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7a5a4b21e1a62b67a2970e6831bc091d7b87e119e7f9791aef9702e3bef04448"
+
 [[package]]
 name = "yazi"
 version = "0.2.1"
@@ -7322,6 +7951,30 @@ version = "1.0.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b8848ee67ecc8aedbaf3e4122217aff892639231befc6a1b58d29fff4c2cabaa"
 
+[[package]]
+name = "zune-core"
+version = "0.5.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cb8a0807f7c01457d0379ba880ba6322660448ddebc890ce29bb64da71fb40f9"
+
+[[package]]
+name = "zune-inflate"
+version = "0.2.54"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "73ab332fe2f6680068f3582b16a24f90ad7096d5d39b974d1c0aff0125116f02"
+dependencies = [
+ "simd-adler32",
+]
+
+[[package]]
+name = "zune-jpeg"
+version = "0.5.15"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "27bc9d5b815bc103f142aa054f561d9187d191692ec7c2d1e2b4737f8dbd7296"
+dependencies = [
+ "zune-core",
+]
+
 [[package]]
 name = "zvariant"
 version = "5.11.0"
diff --git a/Cargo.toml b/Cargo.toml
index 465bafd..46ba8c6 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -25,7 +25,7 @@ async-trait = "0.1.89"
 base64 = "0.22.1"
 bytes = "1.11.1"
 dirs = "6.0.0"
-iced = { version = "0.14.0", features = ["canvas"] }
+iced = { version = "0.14.0", features = ["canvas", "image"] }
 iroh = "1.0.0-rc.0"
 iroh-gossip = "0.99.0"
 opus = "0.3.1"
diff --git a/assets/avatars/preset1.png b/assets/avatars/preset1.png
new file mode 100644
index 0000000..88eaa93
Binary files /dev/null and b/assets/avatars/preset1.png differ
diff --git a/assets/avatars/preset2.png b/assets/avatars/preset2.png
new file mode 100644
index 0000000..6198895
Binary files /dev/null and b/assets/avatars/preset2.png differ
diff --git a/assets/avatars/preset3.png b/assets/avatars/preset3.png
new file mode 100644
index 0000000..3b34e6a
Binary files /dev/null and b/assets/avatars/preset3.png differ
diff --git a/assets/avatars/preset4.png b/assets/avatars/preset4.png
new file mode 100644
index 0000000..415ecac
Binary files /dev/null and b/assets/avatars/preset4.png differ
diff --git a/assets/avatars/preset5.png b/assets/avatars/preset5.png
new file mode 100644
index 0000000..eae416d
Binary files /dev/null and b/assets/avatars/preset5.png differ
diff --git a/assets/avatars/preset6.png b/assets/avatars/preset6.png
new file mode 100644
index 0000000..861c19a
Binary files /dev/null and b/assets/avatars/preset6.png differ
diff --git a/src/app/mod.rs b/src/app/mod.rs
index c35d41e..c154f29 100644
--- a/src/app/mod.rs
+++ b/src/app/mod.rs
@@ -163,6 +163,8 @@ pub enum AppMessage {
     SelectRoomLayout(RoomLayout),
     /// Choose a UI theme (applied live + persisted).
     SelectTheme(AppTheme),
+    /// Choose our avatar (monogram or a preset); applied live + persisted (W4).
+    SelectAvatar(crate::avatar::Avatar),
     /// Toggle the Chat drawer open/closed (drawer layout).
     ToggleDrawerChat,
     /// Start/stop sharing our own screen (spawns/kills a pixelpass host).
@@ -465,6 +467,7 @@ fn update(state: &mut AppState, message: AppMessage) -> Task<AppMessage> {
                     input_device,
                     output_device,
                     echo_cancellation: state.config.echo_cancellation_enabled,
+                    avatar: state.config.avatar.clone(),
                 });
             }
         }
@@ -483,6 +486,7 @@ fn update(state: &mut AppState, message: AppMessage) -> Task<AppMessage> {
                 input_device,
                 output_device,
                 echo_cancellation: state.config.echo_cancellation_enabled,
+                avatar: state.config.avatar.clone(),
             });
         }
         AppMessage::LeavePressed => {
@@ -780,6 +784,12 @@ fn update(state: &mut AppState, message: AppMessage) -> Task<AppMessage> {
             state.config.theme = theme;
             state.config.save();
         }
+        AppMessage::SelectAvatar(avatar) => {
+            state.config.avatar = avatar.clone();
+            state.config.save();
+            // Re-announce to the room if we're in a call (no-op otherwise).
+            let _ = state.controller.send(CoreCommand::SetAvatar(avatar));
+        }
         AppMessage::ToggleDrawerChat => {
             state.drawer_chat_open = !state.drawer_chat_open;
         }
@@ -1216,6 +1226,51 @@ fn view(state: &AppState) -> Element<'_, AppMessage> {
         .spacing(10)
         .width(iced::Length::Fill);
 
+        // Inline avatar chooser (W4): the monogram fallback plus the bundled
+        // presets, each a clickable tile. Same SelectAvatar message, applied live
+        // + persisted (and re-announced to the room).
+        let avatar_choice = |a: crate::avatar::Avatar, label: String| -> Element<'_, AppMessage> {
+            let selected = state.config.avatar == a;
+            let preview = avatar_view(&a, &state.name, &state.self_id, 52.0);
+            column![
+                button(
+                    container(preview)
+                        .center_x(iced::Length::Fixed(60.0))
+                        .center_y(iced::Length::Fixed(60.0))
+                )
+                .on_press(AppMessage::SelectAvatar(a))
+                .padding(2)
+                .style(b_style(
+                    if selected { color_surface } else { Color::TRANSPARENT },
+                    color_surface,
+                    color_text,
+                    8.0,
+                )),
+                text(label)
+                    .size(11)
+                    .color(if selected { color_blue } else { color_subtext }),
+            ]
+            .spacing(4)
+            .align_x(iced::alignment::Horizontal::Center)
+            .into()
+        };
+        let mut avatar_tiles: Vec<Element<'_, AppMessage>> =
+            vec![avatar_choice(crate::avatar::Avatar::Monogram, "Monogram".to_string())];
+        for i in 0..crate::avatar::PRESET_COUNT {
+            avatar_tiles.push(avatar_choice(
+                crate::avatar::Avatar::Preset(i),
+                format!("Preset {}", i + 1),
+            ));
+        }
+        let avatar_section = column![
+            iced::widget::Row::with_children(avatar_tiles).spacing(12),
+            text("Shown next to your name in the room and chat. Applies live.")
+                .size(11)
+                .color(color_subtext),
+        ]
+        .spacing(10)
+        .width(iced::Length::Fill);
+
         // Reusable category header: a coloured title with a thin full-width
         // divider beneath, so each class of settings reads as its own section.
         let section_header = |title: &'static str| -> Element<'_, AppMessage> {
@@ -1335,6 +1390,11 @@ fn view(state: &AppState) -> Element<'_, AppMessage> {
                 theme_section,
                 vertical_space(section_gap),
 
+                // --- Avatar ---
+                section_header("Avatar"),
+                avatar_section,
+                vertical_space(section_gap),
+
                 // --- Notifications & Sounds ---
                 section_header("Notifications & Sounds"),
                 column![
@@ -1602,7 +1662,7 @@ fn view(state: &AppState) -> Element<'_, AppMessage> {
         let self_card = container(
             column![
                 row![
-                    avatar_badge(&state.name, &state.self_id, 34.0),
+                    avatar_view(&state.config.avatar, &state.name, &state.self_id, 34.0),
                     text(format!("{} (You)", &state.name)).size(16).color(color_text),
                     horizontal_space(),
                     if state.is_muted {
@@ -1729,7 +1789,7 @@ fn view(state: &AppState) -> Element<'_, AppMessage> {
 
             let mut card_content = column![
                 row![
-                    avatar_badge(&peer.name, &peer_id.to_string(), 38.0),
+                    avatar_view(&peer.avatar, &peer.name, &peer_id.to_string(), 38.0),
                     column![
                         text(&peer.name).size(16).color(color_text),
                         text(format!("ID: {}", short_id(&peer_id.to_string()))).size(11).color(color_subtext)
@@ -1940,11 +2000,27 @@ fn view(state: &AppState) -> Element<'_, AppMessage> {
                     .width(iced::Length::Fill);
                 // Small avatar keyed on the sender's id (falls back to name); the
                 // " (You)" suffix on our own echoes is stripped for clean initials.
+                // Resolve the sender's chosen avatar: our own from config, a peer's
+                // from their current presence (looked up by id), else monogram.
                 let av_key = m.from.as_deref().unwrap_or(m.name.as_str());
                 let av_name = m.name.split(" (").next().unwrap_or(m.name.as_str());
+                let av = if m.mine {
+                    state.config.avatar.clone()
+                } else {
+                    m.from
+                        .as_deref()
+                        .and_then(|f| {
+                            state
+                                .peers
+                                .iter()
+                                .find(|(k, _)| k.to_string() == f)
+                                .map(|(_, v)| v.avatar.clone())
+                        })
+                        .unwrap_or_default()
+                };
                 chat_col = chat_col.push(
                     row![
-                        avatar_badge(av_name, av_key, 22.0),
+                        avatar_view(&av, av_name, av_key, 22.0),
                         text(format!("{}:", m.name)).size(12).color(name_color),
                         body,
                     ]
@@ -2781,6 +2857,25 @@ fn avatar_badge<'a>(name: &str, key: &str, size: f32) -> Element<'a, AppMessage>
         .into()
 }
 
+/// Render a participant's avatar (W4): the chosen preset image if any, else the
+/// monogram fallback. `name`/`key` feed the monogram; `size` is the diameter.
+fn avatar_view<'a>(
+    avatar: &crate::avatar::Avatar,
+    name: &str,
+    key: &str,
+    size: f32,
+) -> Element<'a, AppMessage> {
+    match avatar.preset_png() {
+        Some(png) => iced::widget::image(
+            iced::widget::image::Handle::from_bytes(bytes::Bytes::from_static(png)),
+        )
+        .width(iced::Length::Fixed(size))
+        .height(iced::Length::Fixed(size))
+        .into(),
+        None => avatar_badge(name, key, size),
+    }
+}
+
 /// Centered "icon + label" content for a full-width control-panel button. The
 /// icon takes the button's foreground colour so it matches the label.
 fn btn_content<'a>(kind: IconKind, label: &'a str, color: Color) -> Element<'a, AppMessage> {
diff --git a/src/avatar.rs b/src/avatar.rs
index 7b644d3..ff6602e 100644
--- a/src/avatar.rs
+++ b/src/avatar.rs
@@ -1,4 +1,5 @@
-//! Avatar helpers: deterministic monogram + colour for a participant.
+//! Avatar helpers: a participant's chosen [`Avatar`] plus the deterministic
+//! monogram + colour used as the fallback.
 //!
 //! Every participant gets a visual avatar (W4). When they haven't chosen a preset
 //! or uploaded an image, we fall back to a *monogram*: their initial(s) on a
@@ -6,6 +7,46 @@
 //! name where the id isn't available, e.g. a chat line). Pure + dependency-free
 //! so it's unit-testable and needs no image decoding for the common case.
 
+use serde::{Deserialize, Serialize};
+
+/// Number of bundled preset avatars (`preset1.png`..`preset6.png`).
+pub const PRESET_COUNT: u8 = 6;
+
+/// The raw PNG bytes of each bundled preset, embedded so they're available
+/// offline and identical on every peer. Index 0 = preset 1, etc.
+pub const PRESET_PNGS: [&[u8]; PRESET_COUNT as usize] = [
+    include_bytes!("../assets/avatars/preset1.png"),
+    include_bytes!("../assets/avatars/preset2.png"),
+    include_bytes!("../assets/avatars/preset3.png"),
+    include_bytes!("../assets/avatars/preset4.png"),
+    include_bytes!("../assets/avatars/preset5.png"),
+    include_bytes!("../assets/avatars/preset6.png"),
+];
+
+/// A participant's chosen avatar. Rides the gossip presence plane (`PeerState`)
+/// and is persisted in `AppConfig`. `Monogram` is the default fallback (rendered
+/// from name + a colour key, no image). `Preset(i)` selects a bundled preset by
+/// zero-based index. (Custom uploaded images are W4 Phase 3 — a future variant.)
+#[derive(Debug, Clone, PartialEq, Eq, Default, Serialize, Deserialize)]
+pub enum Avatar {
+    /// Initials-on-colour fallback.
+    #[default]
+    Monogram,
+    /// A bundled preset by zero-based index; out-of-range falls back to monogram.
+    Preset(u8),
+}
+
+impl Avatar {
+    /// The embedded PNG bytes for this avatar, or `None` when it's a monogram
+    /// (or an out-of-range preset index, which renders as a monogram).
+    pub fn preset_png(&self) -> Option<&'static [u8]> {
+        match self {
+            Avatar::Preset(i) => PRESET_PNGS.get(*i as usize).copied(),
+            Avatar::Monogram => None,
+        }
+    }
+}
+
 /// Curated palette the monogram background is chosen from. Picked to be distinct
 /// and legible under the app's (mostly dark) themes; the matching text colour is
 /// decided per-background by [`use_dark_text_on`]. Order is part of the stable
@@ -92,6 +133,32 @@ mod tests {
         let _ = color_for_key("");
     }
 
+    #[test]
+    fn avatar_default_is_monogram() {
+        assert_eq!(Avatar::default(), Avatar::Monogram);
+        assert!(Avatar::default().preset_png().is_none());
+    }
+
+    #[test]
+    fn preset_png_in_range_and_out_of_range() {
+        // Every declared preset index resolves to embedded bytes.
+        for i in 0..PRESET_COUNT {
+            assert!(Avatar::Preset(i).preset_png().is_some(), "preset {i} missing");
+        }
+        // Out-of-range index gracefully yields None (→ monogram fallback).
+        assert!(Avatar::Preset(PRESET_COUNT).preset_png().is_none());
+        assert!(Avatar::Preset(250).preset_png().is_none());
+    }
+
+    #[test]
+    fn avatar_serde_round_trips_and_defaults() {
+        // Round-trips through JSON (it rides presence + persists in config).
+        for a in [Avatar::Monogram, Avatar::Preset(0), Avatar::Preset(5)] {
+            let s = serde_json::to_string(&a).unwrap();
+            assert_eq!(serde_json::from_str::<Avatar>(&s).unwrap(), a);
+        }
+    }
+
     #[test]
     fn dark_text_chosen_on_light_backgrounds() {
         assert!(use_dark_text_on((0xFF, 0xFF, 0xFF))); // white bg → dark text
diff --git a/src/bin/test_net.rs b/src/bin/test_net.rs
index c80740c..9298541 100644
--- a/src/bin/test_net.rs
+++ b/src/bin/test_net.rs
@@ -62,6 +62,7 @@ async fn main() -> Result<(), Box<dyn std::error::Error>> {
         is_muted: false,
         addr: endpoint_a.addr(),
         sharing: None,
+        avatar: Default::default(),
     };
     room_a.join(&ticket_str, state_a, vec![]).await?;
     println!("Node A joined topic.");
@@ -80,6 +81,7 @@ async fn main() -> Result<(), Box<dyn std::error::Error>> {
         is_muted: false,
         addr: endpoint_b.addr(),
         sharing: None,
+        avatar: Default::default(),
     };
     room_b.join(&ticket_str, state_b, vec![]).await?;
     println!("Node B joined topic.");
diff --git a/src/config.rs b/src/config.rs
index 8976e75..2d6a248 100644
--- a/src/config.rs
+++ b/src/config.rs
@@ -176,6 +176,9 @@ pub struct AppConfig {
     /// Chosen UI colour theme.
     #[serde(default)]
     pub theme: AppTheme,
+    /// Our chosen avatar (W4): monogram fallback or a bundled preset.
+    #[serde(default)]
+    pub avatar: crate::avatar::Avatar,
     /// What a call recording captures (mixed / per-peer stems / both).
     #[serde(default)]
     pub recording_mode: RecordingMode,
@@ -233,6 +236,7 @@ impl Default for AppConfig {
             chat_drawer_width: default_chat_drawer_width(),
             room_layout: RoomLayout::default(),
             theme: AppTheme::default(),
+            avatar: crate::avatar::Avatar::default(),
             recording_mode: RecordingMode::default(),
             custom_sound_self_join: None,
             custom_sound_peer_join: None,
diff --git a/src/core/messages.rs b/src/core/messages.rs
index 5922d3e..f93556f 100644
--- a/src/core/messages.rs
+++ b/src/core/messages.rs
@@ -4,9 +4,11 @@ use iroh::EndpointId;
 
 #[derive(Debug, Clone)]
 pub enum CoreCommand {
-    Join { name: String, ticket: String, input_device: Option<String>, output_device: Option<String>, echo_cancellation: bool },
+    Join { name: String, ticket: String, input_device: Option<String>, output_device: Option<String>, echo_cancellation: bool, avatar: crate::avatar::Avatar },
     Leave,
     ToggleMute,
+    /// Change our avatar (W4) and re-announce it to the room over presence.
+    SetAvatar(crate::avatar::Avatar),
     ToggleDeafen,
     SetPttMode(bool),
     SetPttActive(bool),
diff --git a/src/core/mod.rs b/src/core/mod.rs
index ea13640..130b6b8 100644
--- a/src/core/mod.rs
+++ b/src/core/mod.rs
@@ -454,6 +454,9 @@ async fn run_core_loop(
     // Peers locally muted by us: decoded for level metering but not mixed.
     let locally_muted = Arc::new(Mutex::new(HashSet::<EndpointId>::new()));
     let mut current_name = "Anonymous".to_string();
+    // Our chosen avatar (W4), set on Join and changeable via SetAvatar; included
+    // in every self-state we announce over presence.
+    let mut current_avatar = crate::avatar::Avatar::default();
     let mut network_mode = NetworkMode::default();
     // Pixelpass binary override (config), and the ticket of our own active screen
     // share (rides our presence so the room — incl. late joiners — can watch).
@@ -466,8 +469,9 @@ async fn run_core_loop(
 
     while let Some(cmd) = cmd_rx.recv().await {
         match cmd {
-            CoreCommand::Join { name, ticket, input_device, output_device, echo_cancellation } => {
+            CoreCommand::Join { name, ticket, input_device, output_device, echo_cancellation, avatar } => {
                 current_name = name.clone();
+                current_avatar = avatar;
 
                 // Finalize any recording before tearing down the old session — its
                 // capture/mixer feeders are about to stop.
@@ -561,6 +565,7 @@ async fn run_core_loop(
                     is_muted: is_muted.load(Ordering::Relaxed),
                     addr: endpoint.addr(),
                     sharing: None,
+                    avatar: current_avatar.clone(),
                 };
 
                 // Retain peers across leave so a rejoin can dial them (A8). A
@@ -1066,6 +1071,23 @@ async fn run_core_loop(
                         is_muted: new_state,
                         addr: session.endpoint.addr(),
                         sharing: current_sharing.clone(),
+                        avatar: current_avatar.clone(),
+                    };
+                    let _ = session.room_state.update_self_state(self_state).await;
+                }
+            }
+
+            CoreCommand::SetAvatar(avatar) => {
+                current_avatar = avatar;
+                // Re-announce presence so the room (incl. late joiners, via the
+                // retained presence) picks up the new avatar (W4).
+                if let Some(session) = &active_session {
+                    let self_state = PeerState {
+                        name: current_name.clone(),
+                        is_muted: is_muted.load(Ordering::Relaxed),
+                        addr: session.endpoint.addr(),
+                        sharing: current_sharing.clone(),
+                        avatar: current_avatar.clone(),
                     };
                     let _ = session.room_state.update_self_state(self_state).await;
                 }
@@ -1274,6 +1296,7 @@ async fn run_core_loop(
                             is_muted: is_muted.load(Ordering::Relaxed),
                             addr: session.endpoint.addr(),
                             sharing: Some(ticket),
+                            avatar: current_avatar.clone(),
                         };
                         let _ = session.room_state.update_self_state(self_state).await;
                         let _ = ui_tx.send(UiEvent::ScreenShareStarted).await;
@@ -1298,6 +1321,7 @@ async fn run_core_loop(
                         is_muted: is_muted.load(Ordering::Relaxed),
                         addr: session.endpoint.addr(),
                         sharing: None,
+                        avatar: current_avatar.clone(),
                     };
                     let _ = session.room_state.update_self_state(self_state).await;
                 }
diff --git a/src/network/gossip.rs b/src/network/gossip.rs
index b06b1a1..2cad05c 100644
--- a/src/network/gossip.rs
+++ b/src/network/gossip.rs
@@ -493,6 +493,7 @@ mod tests {
             is_muted: true,
             addr,
             sharing: None,
+            avatar: crate::avatar::Avatar::default(),
         }
     }
 
diff --git a/src/network/mod.rs b/src/network/mod.rs
index 5026d9f..c609c98 100644
--- a/src/network/mod.rs
+++ b/src/network/mod.rs
@@ -34,6 +34,11 @@ pub struct PeerState {
     /// older configs / peers that predate the field still deserialize.
     #[serde(default)]
     pub sharing: Option<String>,
+    /// This peer's chosen avatar (W4). Rides presence so it reaches everyone
+    /// (incl. late joiners) with no server, like `sharing`. Defaulted so older
+    /// peers/configs that predate the field still deserialize (→ monogram).
+    #[serde(default)]
+    pub avatar: crate::avatar::Avatar,
 }
 
 #[derive(Debug, Clone)]
@@ -180,6 +185,7 @@ mod tests {
             is_muted: false,
             addr,
             sharing: None,
+            avatar: crate::avatar::Avatar::default(),
         }
     }