diff --git a/Cargo.lock b/Cargo.lock
index 687d119c..72472b22 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -33,6 +33,7 @@ dependencies = [
  "tauri",
  "tauri-build 2.6.2",
  "tauri-plugin-cli",
+ "tauri-plugin-clipboard-manager",
  "tauri-plugin-deep-link",
  "tauri-plugin-device-info",
  "tauri-plugin-dialog",
@@ -273,6 +274,27 @@ dependencies = [
  "derive_arbitrary",
 ]
 
+[[package]]
+name = "arboard"
+version = "3.6.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0348a1c054491f4bfe6ab86a7b6ab1e44e45d899005de92f58b3df180b36ddaf"
+dependencies = [
+ "clipboard-win",
+ "image",
+ "log",
+ "objc2",
+ "objc2-app-kit",
+ "objc2-core-foundation",
+ "objc2-core-graphics",
+ "objc2-foundation",
+ "parking_lot",
+ "percent-encoding",
+ "windows-sys 0.60.2",
+ "wl-clipboard-rs",
+ "x11rb",
+]
+
 [[package]]
 name = "arc-swap"
 version = "1.9.1"
@@ -958,7 +980,7 @@ version = "0.6.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6fac387a98bb7c37292057cffc56d62ecb629900026402633ae9160df93a8766"
 dependencies = [
- "nom",
+ "nom 7.1.3",
 ]
 
 [[package]]
@@ -1072,6 +1094,15 @@ version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c8d4a3bb8b1e0c1050499d1815f5ab16d04f0959b233085fb31653fbfc9d98f9"
 
+[[package]]
+name = "clipboard-win"
+version = "5.4.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bde03770d3df201d4fb868f2c9c59e66a3e4e2bd06692a0fe701e7103c7e84d4"
+dependencies = [
+ "error-code",
+]
+
 [[package]]
 name = "cocoa"
 version = "0.25.0"
@@ -1823,6 +1854,12 @@ dependencies = [
  "tendril 0.5.0",
 ]
 
+[[package]]
+name = "downcast-rs"
+version = "1.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "75b325c5dbd37f80359721ad39aca5a29fb04c89279657cffdda8736d0c0b9d2"
+
 [[package]]
 name = "downcast-rs"
 version = "2.0.2"
@@ -2013,6 +2050,12 @@ dependencies = [
  "windows-sys 0.61.2",
 ]
 
+[[package]]
+name = "error-code"
+version = "3.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dea2df4cf52843e0452895c455a1a2cfbb842a1e7329671acf418fdc53ed4c59"
+
 [[package]]
 name = "event-listener"
 version = "5.4.1"
@@ -2063,6 +2106,12 @@ 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"
@@ -2116,6 +2165,12 @@ version = "0.1.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5baebc0774151f905a1a2cc41989300b1e6fbb29aff0ceffa1064fdd3088d582"
 
+[[package]]
+name = "fixedbitset"
+version = "0.5.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1d674e81391d1e1ab681a28d99df07927c6d4aa5b027d7da16ba32d1d21ecd99"
+
 [[package]]
 name = "flate2"
 version = "1.1.9"
@@ -2820,6 +2875,17 @@ dependencies = [
  "tracing",
 ]
 
+[[package]]
+name = "half"
+version = "2.7.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6ea2d84b969582b4b1864a92dc5d27cd2b77b622a8d79306834f1be5ba20d84b"
+dependencies = [
+ "cfg-if",
+ "crunchy",
+ "zerocopy",
+]
+
 [[package]]
 name = "hashbrown"
 version = "0.12.3"
@@ -3230,6 +3296,7 @@ dependencies = [
  "moxcms",
  "num-traits",
  "png 0.18.1",
+ "tiff",
 ]
 
 [[package]]
@@ -4197,6 +4264,15 @@ dependencies = [
  "minimal-lexical",
 ]
 
+[[package]]
+name = "nom"
+version = "8.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "df9761775871bdef83bee530e60050f7e54b1105350d6884eb0fb4f46c2f9405"
+dependencies = [
+ "memchr",
+]
+
 [[package]]
 name = "notify"
 version = "8.2.0"
@@ -4974,6 +5050,17 @@ dependencies = [
  "sha2",
 ]
 
+[[package]]
+name = "petgraph"
+version = "0.8.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8701b58ea97060d5e5b155d383a69952a60943f0e6dfe30b04c287beb0b27455"
+dependencies = [
+ "fixedbitset",
+ "hashbrown 0.15.5",
+ "indexmap 2.14.0",
+]
+
 [[package]]
 name = "phf"
 version = "0.8.0"
@@ -5469,6 +5556,12 @@ version = "1.2.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a1d01941d82fa2ab50be1e79e6714289dd7cde78eba4c074bc5a4374f650dfe0"
 
+[[package]]
+name = "quick-error"
+version = "2.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a993555f31e5a609f617c12db6250dedcac1b0a85076912c436e6fc9b2c8e6a3"
+
 [[package]]
 name = "quick-xml"
 version = "0.39.4"
@@ -6196,7 +6289,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "cc6bf79ff24e648f6da1f8d1f011e9cac26491b619e6b9280f2b47f1774e6ee2"
 dependencies = [
  "fnv",
- "quick-error",
+ "quick-error 1.2.3",
  "tempfile",
  "wait-timeout",
 ]
@@ -7112,7 +7205,7 @@ dependencies = [
  "crc32fast",
  "crossbeam-channel",
  "datasketches",
- "downcast-rs",
+ "downcast-rs 2.0.2",
  "fastdivide",
  "fnv",
  "fs4",
@@ -7164,7 +7257,7 @@ version = "0.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c57166f5bcfd478f370ab8445afb4678dce44801fa5ce5c451aaf8595583c5dc"
 dependencies = [
- "downcast-rs",
+ "downcast-rs 2.0.2",
  "fastdivide",
  "itertools 0.14.0",
  "serde",
@@ -7205,7 +7298,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "dfadb8526b6da90704feb293b0701a6aae62ea14983143344be2dc5ce30f1d82"
 dependencies = [
  "fnv",
- "nom",
+ "nom 7.1.3",
  "ordered-float",
  "serde",
  "serde_json",
@@ -7493,6 +7586,21 @@ dependencies = [
  "thiserror 2.0.18",
 ]
 
+[[package]]
+name = "tauri-plugin-clipboard-manager"
+version = "2.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "206dc20af4ed210748ba945c2774e60fd0acd52b9a73a028402caf809e9b6ecf"
+dependencies = [
+ "arboard",
+ "log",
+ "serde",
+ "serde_json",
+ "tauri",
+ "tauri-plugin",
+ "thiserror 2.0.18",
+]
+
 [[package]]
 name = "tauri-plugin-deep-link"
 version = "2.4.9"
@@ -8160,6 +8268,20 @@ 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 2.0.1",
+ "weezl",
+ "zune-jpeg",
+]
+
 [[package]]
 name = "time"
 version = "0.3.47"
@@ -8567,6 +8689,17 @@ dependencies = [
  "windows-sys 0.60.2",
 ]
 
+[[package]]
+name = "tree_magic_mini"
+version = "3.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b8765b90061cba6c22b5831f675da109ae5561588290f9fa2317adab2714d5a6"
+dependencies = [
+ "memchr",
+ "nom 8.0.0",
+ "petgraph",
+]
+
 [[package]]
 name = "try-lock"
 version = "0.2.5"
@@ -9245,6 +9378,76 @@ dependencies = [
  "semver",
 ]
 
+[[package]]
+name = "wayland-backend"
+version = "0.3.15"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2857dd20b54e916ec7253b3d6b4d5c4d7d4ca2c33c2e11c6c76a99bd8744755d"
+dependencies = [
+ "cc",
+ "downcast-rs 1.2.1",
+ "rustix 1.1.4",
+ "smallvec",
+ "wayland-sys",
+]
+
+[[package]]
+name = "wayland-client"
+version = "0.31.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "645c7c96bb74690c3189b5c9cb4ca1627062bb23693a4fad9d8c3de958260144"
+dependencies = [
+ "bitflags 2.11.1",
+ "rustix 1.1.4",
+ "wayland-backend",
+ "wayland-scanner",
+]
+
+[[package]]
+name = "wayland-protocols"
+version = "0.32.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "563a85523cade2429938e790815fd7319062103b9f4a2dc806e9b53b95982d8f"
+dependencies = [
+ "bitflags 2.11.1",
+ "wayland-backend",
+ "wayland-client",
+ "wayland-scanner",
+]
+
+[[package]]
+name = "wayland-protocols-wlr"
+version = "0.3.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "eb04e52f7836d7c7976c78ca0250d61e33873c34156a2a1fc9474828ec268234"
+dependencies = [
+ "bitflags 2.11.1",
+ "wayland-backend",
+ "wayland-client",
+ "wayland-protocols",
+ "wayland-scanner",
+]
+
+[[package]]
+name = "wayland-scanner"
+version = "0.31.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9c324a910fd86ebdc364a3e61ec1f11737d3b1d6c273c0239ee8ff4bc0d24b4a"
+dependencies = [
+ "proc-macro2",
+ "quick-xml",
+ "quote",
+]
+
+[[package]]
+name = "wayland-sys"
+version = "0.31.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d8eab23fefc9e41f8e841df4a9c707e8a8c4ed26e944ef69297184de2785e3be"
+dependencies = [
+ "pkg-config",
+]
+
 [[package]]
 name = "web-sys"
 version = "0.3.99"
@@ -9384,6 +9587,12 @@ dependencies = [
  "windows-core 0.61.2",
 ]
 
+[[package]]
+name = "weezl"
+version = "0.1.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a28ac98ddc8b9274cb41bb4d9d4d5c425b6020c50c46f25559911905610b4a88"
+
 [[package]]
 name = "which"
 version = "4.4.2"
@@ -10185,6 +10394,24 @@ dependencies = [
  "wasmparser",
 ]
 
+[[package]]
+name = "wl-clipboard-rs"
+version = "0.9.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e9651471a32e87d96ef3a127715382b2d11cc7c8bb9822ded8a7cc94072eb0a3"
+dependencies = [
+ "libc",
+ "log",
+ "os_pipe",
+ "rustix 1.1.4",
+ "thiserror 2.0.18",
+ "tree_magic_mini",
+ "wayland-backend",
+ "wayland-client",
+ "wayland-protocols",
+ "wayland-protocols-wlr",
+]
+
 [[package]]
 name = "wmi"
 version = "0.13.4"
@@ -10281,6 +10508,23 @@ dependencies = [
  "pkg-config",
 ]
 
+[[package]]
+name = "x11rb"
+version = "0.13.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9993aa5be5a26815fe2c3eacfc1fde061fc1a1f094bf1ad2a18bf9c495dd7414"
+dependencies = [
+ "gethostname",
+ "rustix 1.1.4",
+ "x11rb-protocol",
+]
+
+[[package]]
+name = "x11rb-protocol"
+version = "0.13.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ea6fc2961e4ef194dcbfe56bb845534d0dc8098940c7e5c012a258bfec6701bd"
+
 [[package]]
 name = "xattr"
 version = "1.6.1"
@@ -10526,6 +10770,21 @@ dependencies = [
  "pkg-config",
 ]
 
+[[package]]
+name = "zune-core"
+version = "0.5.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cb8a0807f7c01457d0379ba880ba6322660448ddebc890ce29bb64da71fb40f9"
+
+[[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 = "5.12.0"
diff --git a/apps/readest-app/package.json b/apps/readest-app/package.json
index b9855a2d..aca22ac5 100644
--- a/apps/readest-app/package.json
+++ b/apps/readest-app/package.json
@@ -124,6 +124,7 @@
     "@supabase/supabase-js": "^2.76.1",
     "@tauri-apps/api": "2.10.1",
     "@tauri-apps/plugin-cli": "^2.4.1",
+    "@tauri-apps/plugin-clipboard-manager": "^2.3.0",
     "@tauri-apps/plugin-deep-link": "^2.4.7",
     "@tauri-apps/plugin-dialog": "^2.6.0",
     "@tauri-apps/plugin-fs": "^2.4.5",
diff --git a/apps/readest-app/src-tauri/Cargo.toml b/apps/readest-app/src-tauri/Cargo.toml
index 58fe5a41..2051afad 100644
--- a/apps/readest-app/src-tauri/Cargo.toml
+++ b/apps/readest-app/src-tauri/Cargo.toml
@@ -59,6 +59,7 @@ tauri-plugin-native-tts = { path = "./plugins/tauri-plugin-native-tts" }
 tauri-plugin-webview-upgrade = { path = "./plugins/tauri-plugin-webview-upgrade" }
 tauri-plugin-websocket = "2"
 tauri-plugin-sharekit = "0.3"
+tauri-plugin-clipboard-manager = "2"
 tauri-plugin-device-info = "1.0.1"
 tauri-plugin-turso = { path = "./plugins/tauri-plugin-turso" }
 tauri-plugin-webdriver = { version = "0.2", optional = true }
diff --git a/apps/readest-app/src-tauri/capabilities/default.json b/apps/readest-app/src-tauri/capabilities/default.json
index 97ade28d..2adb844f 100644
--- a/apps/readest-app/src-tauri/capabilities/default.json
+++ b/apps/readest-app/src-tauri/capabilities/default.json
@@ -196,6 +196,8 @@
     "haptics:allow-selection-feedback",
     "deep-link:default",
     "sharekit:default",
+    "clipboard-manager:allow-write-text",
+    "clipboard-manager:allow-read-text",
     "device-info:default",
     "turso:default",
     "native-tts:default",
diff --git a/apps/readest-app/src-tauri/src/lib.rs b/apps/readest-app/src-tauri/src/lib.rs
index 409c4f2d..1e0c798b 100644
--- a/apps/readest-app/src-tauri/src/lib.rs
+++ b/apps/readest-app/src-tauri/src/lib.rs
@@ -290,6 +290,7 @@ pub fn run() {
         .plugin(tauri_plugin_os::init())
         .plugin(tauri_plugin_dialog::init())
         .plugin(tauri_plugin_sharekit::init())
+        .plugin(tauri_plugin_clipboard_manager::init())
         .plugin(tauri_plugin_device_info::init())
         .plugin(tauri_plugin_turso::init())
         .plugin(tauri_plugin_native_bridge::init())
diff --git a/apps/readest-app/src/app/reader/components/annotator/Annotator.tsx b/apps/readest-app/src/app/reader/components/annotator/Annotator.tsx
index 25184bc2..f081a1ce 100644
--- a/apps/readest-app/src/app/reader/components/annotator/Annotator.tsx
+++ b/apps/readest-app/src/app/reader/components/annotator/Annotator.tsx
@@ -45,6 +45,7 @@ import {
 import { runSimpleCC } from '@/utils/simplecc';
 import { getWordCount } from '@/utils/word';
 import { getIndexFromCfi, isCfiInLocation } from '@/utils/cfi';
+import { writeTextToClipboard } from '@/utils/clipboard';
 import { TransformContext } from '@/services/transformers/types';
 import { transformContent } from '@/services/transformService';
 import {
@@ -729,9 +730,10 @@ const Annotator: React.FC<{ bookKey: string }> = ({ bookKey }) => {
 
   const handleCopy = (dismissPopup = true) => {
     if (!selection || !selection.text) return;
+    const textToCopy = selection.text;
     setTimeout(() => {
       // Delay to ensure it won't be overridden by system clipboard actions
-      navigator.clipboard?.writeText(selection.text);
+      void writeTextToClipboard(textToCopy);
     }, 100);
     if (dismissPopup) {
       handleDismissPopupAndSelection();
@@ -1208,7 +1210,7 @@ const Annotator: React.FC<{ bookKey: string }> = ({ bookKey }) => {
 
     setTimeout(() => {
       // Delay to ensure it won't be overridden by system clipboard actions
-      navigator.clipboard?.writeText(content);
+      void writeTextToClipboard(content);
     }, 100);
 
     const ext = isPlainText ? 'txt' : 'md';
diff --git a/apps/readest-app/src/utils/clipboard.ts b/apps/readest-app/src/utils/clipboard.ts
new file mode 100644
index 00000000..8f4de1c1
--- /dev/null
+++ b/apps/readest-app/src/utils/clipboard.ts
@@ -0,0 +1,62 @@
+import { isTauriAppPlatform } from '@/services/environment';
+
+/**
+ * Write `text` to the system clipboard.
+ *
+ * Why this wrapper exists:
+ *   On Android (Tauri WebView) `navigator.clipboard.writeText` does not
+ *   reliably write to the OS clipboard — selecting text inside a Reader
+ *   iframe and tapping the in-app Copy button silently no-ops. Routing
+ *   through the Tauri `clipboard-manager` plugin uses the Android
+ *   `ClipboardManager` API directly and works in every Tauri target
+ *   (Android, iOS, macOS, Windows, Linux). On the web build we keep the
+ *   standard `navigator.clipboard` path with an `execCommand('copy')`
+ *   fallback for older browsers / non-secure contexts.
+ *
+ * Resolves to `true` when the write succeeded, `false` otherwise.
+ */
+export const writeTextToClipboard = async (text: string): Promise<boolean> => {
+  if (typeof text !== 'string') return false;
+
+  if (isTauriAppPlatform()) {
+    try {
+      const { writeText } = await import('@tauri-apps/plugin-clipboard-manager');
+      await writeText(text);
+      return true;
+    } catch (err) {
+      // Fall through to web APIs below — better to silently degrade than
+      // to lose the user's copy entirely if the plugin is unavailable.
+      console.warn('[clipboard] tauri writeText failed, falling back', err);
+    }
+  }
+
+  if (typeof navigator !== 'undefined' && navigator.clipboard?.writeText) {
+    try {
+      await navigator.clipboard.writeText(text);
+      return true;
+    } catch (err) {
+      console.warn('[clipboard] navigator.clipboard.writeText failed, falling back', err);
+    }
+  }
+
+  // Last-resort fallback for non-secure contexts / older WebViews.
+  if (typeof document !== 'undefined') {
+    try {
+      const ta = document.createElement('textarea');
+      ta.value = text;
+      ta.setAttribute('readonly', '');
+      ta.style.position = 'fixed';
+      ta.style.opacity = '0';
+      ta.style.pointerEvents = 'none';
+      document.body.appendChild(ta);
+      ta.select();
+      const ok = document.execCommand('copy');
+      document.body.removeChild(ta);
+      return ok;
+    } catch (err) {
+      console.warn('[clipboard] execCommand fallback failed', err);
+    }
+  }
+
+  return false;
+};
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 28fdb340..ae5c8448 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -177,6 +177,9 @@ importers:
       '@tauri-apps/plugin-cli':
         specifier: ^2.4.1
         version: 2.4.1
+      '@tauri-apps/plugin-clipboard-manager':
+        specifier: ^2.3.0
+        version: 2.3.2
       '@tauri-apps/plugin-deep-link':
         specifier: ^2.4.7
         version: 2.4.9
@@ -3588,6 +3591,9 @@ packages:
   '@tauri-apps/plugin-cli@2.4.1':
     resolution: {integrity: sha512-8JXofQFI5cmiGolh1PlU4hzE2YJgrgB1lyaztyBYiiMCy13luVxBXaXChYPeqMkUo46J1UadxvYdjRjj0E8zaw==}
 
+  '@tauri-apps/plugin-clipboard-manager@2.3.2':
+    resolution: {integrity: sha512-CUlb5Hqi2oZbcZf4VUyUH53XWPPdtpw43EUpCza5HWZJwxEoDowFzNUDt1tRUXA8Uq+XPn17Ysfptip33sG4eQ==}
+
   '@tauri-apps/plugin-deep-link@2.4.9':
     resolution: {integrity: sha512-u0SKOUHnJ1wqeqXsDFq2+kASCBj9xxbG0g9XZWPy9SOmU4wXtp6b/wiYpm6oH6/5fBTQsLqnLhIvqLBRpgHJlA==}
 
@@ -12070,6 +12076,10 @@ snapshots:
     dependencies:
       '@tauri-apps/api': 2.10.1
 
+  '@tauri-apps/plugin-clipboard-manager@2.3.2':
+    dependencies:
+      '@tauri-apps/api': 2.10.1
+
   '@tauri-apps/plugin-deep-link@2.4.9':
     dependencies:
       '@tauri-apps/api': 2.11.0