diff --git a/.github/workflows/worker.yml b/.github/workflows/worker.yml
new file mode 100644
index 0000000..b99d455
--- /dev/null
+++ b/.github/workflows/worker.yml
@@ -0,0 +1,37 @@
+name: Deploy Worker
+on:
+  push:
+  pull_request:
+  repository_dispatch:
+jobs:
+  deploy:
+    runs-on: ubuntu-latest
+    # For Workers Deployment fork only
+    if: github.repository != 'Gowee/zhconv-rs'
+    timeout-minutes: 60
+    steps:
+      # - run: echo '${{ toJSON(github.event) }}' | jq .
+      - uses: actions/checkout@v2
+      - name: Activate OpenCC Dicts
+        run: sed -i 's/default = \[/\0"opencc"/' worker/Cargo.toml
+      - name: Disable other workflows in Workers fork
+        if: github.run_number == 1 && github.event_name == 'repository_dispatch' && github.event.repository.fork == true
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: |
+          flows=$(gh workflow list --json 'name,id' --jq '.[] | select(.name != "${{ github.workflow }}") | .id')
+          echo "Workflows to disable: $flows"
+          for flow in $flows; do
+            gh workflow disable $flow
+          done
+          # runs=$(gh run list --json 'databaseId' --jq '.[] | select(.databaseId != ${{ github.run_id }}) | .databaseId')
+          # echo "Runs to cancel: $runs"
+          # for run in $runs; do
+          #   gh run cancel $run
+          # done
+      - name: Build & Deploy Worker
+        uses: cloudflare/wrangler-action@v3
+        with:
+          apiToken: ${{ secrets.CF_API_TOKEN }}
+          accountId: ${{ secrets.CF_ACCOUNT_ID }}
+          workingDirectory: worker
diff --git a/Cargo.toml b/Cargo.toml
index 5f06497..5a51443 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -27,6 +27,7 @@ once_cell = "1.20"
 regex = "1.11"
 ruzstd = { version = "0.7", optional = true }
 strum = { version = "0.26", features = ["derive"] }
+serde = { version = "1.0",  optional = true, features = ["serde_derive"] }
 
 [target.'cfg(target_arch = "wasm32")'.dependencies]
 wasm-bindgen = "0.2"
diff --git a/README.md b/README.md
index 22bbdce..c7bdaeb 100644
--- a/README.md
+++ b/README.md
@@ -18,6 +18,12 @@ It leverages the [Aho-Corasick](https://github.com/daac-tools/daachorse) algorit
 
 🐍 **Python package w/ wheels via PyO3**: `pip install zhconv-rs` or `pip install zhconv-rs-opencc` (with rulesets from OpenCC)
 
+<a href="https://deploy.workers.cloudflare.com/?url=https://github.com/gowee/zhconv-rs">
+    <img src="https://deploy.workers.cloudflare.com/button" align="right" alt="Deploy to Cloudflare Workers">
+</a>
+
+🧩 **API demo**: https://zhconv.bamboo.workers.dev
+
 <details open>
  <summary>Python snippet</summary>
 
diff --git a/src/variant.rs b/src/variant.rs
index f4d7c23..3450d98 100644
--- a/src/variant.rs
+++ b/src/variant.rs
@@ -15,29 +15,52 @@ use crate::utils::get_with_fallback;
 
 /// Chinese variants (a.k.a 中文變體), parsed from language tags, as listed in [Help:高级字词转换语法#组合转换标签](https://zh.wikipedia.org/wiki/Help:高级字词转换语法#组合转换标签).
 #[derive(
-    Clone, Copy, Debug, PartialEq, Eq, Hash, Display, EnumString, VariantNames, IntoStaticStr,
+    Clone,
+    Copy,
+    Debug,
+    Default,
+    PartialEq,
+    Eq,
+    Hash,
+    Display,
+    EnumString,
+    VariantNames,
+    IntoStaticStr,
 )]
 #[strum(serialize_all = "kebab_case", ascii_case_insensitive)]
-#[derive(Default)]
+#[cfg_attr(
+    feature = "serde",
+    derive(serde::Serialize, serde::Deserialize),
+    serde(rename_all = "kebab-case")
+)]
 pub enum Variant {
     #[default]
     /// Chinese (dummy variant)
     Zh,
     /// Script: Traditional Chinese
+    #[cfg_attr(feature = "serde", serde(alias = "zh-Hant"))]
     ZhHant,
     /// Script: Simplified Chinese
+    #[cfg_attr(feature = "serde", serde(alias = "zh-Hans"))]
     ZhHans,
     /// Short for `zh-Hant-TW`, Script: Traditional Chinese, Region: Taiwan
+    #[cfg_attr(feature = "serde", serde(rename = "zh-tw", alias = "zh-TW"))]
+    // zh-t-w by serde by default
     ZhTW,
     /// Short for`zh-Hant-HK`, Script: Traditional Chinese, Region: Hong Kong
+    #[cfg_attr(feature = "serde", serde(rename = "zh-hk", alias = "zh-HK"))]
     ZhHK,
     /// Short for`zh-Hant-MO`, Script: Traditional Chinese, Region: Macau
+    #[cfg_attr(feature = "serde", serde(rename = "zh-mo", alias = "zh-MO"))]
     ZhMO,
     /// Short for`zh-Hans-MY`, Script: Simplified Chinese, Region: Malaysia
+    #[cfg_attr(feature = "serde", serde(rename = "zh-my", alias = "zh-MY"))]
     ZhMY,
     /// Short for`zh-Hans-SG`, Script: Simplified Chinese, Region: Singapore
+    #[cfg_attr(feature = "serde", serde(rename = "zh-sg", alias = "zh-SG"))]
     ZhSG,
     /// Short for`zh-Hans-CN`, Script: Simplified Chinese, Region: China (mainland)
+    #[cfg_attr(feature = "serde", serde(rename = "zh-cn", alias = "zh-CN"))]
     ZhCN,
     // Unknown(String)
 }
diff --git a/worker/.gitignore b/worker/.gitignore
new file mode 100644
index 0000000..a58507d
--- /dev/null
+++ b/worker/.gitignore
@@ -0,0 +1,4 @@
+target
+node_modules
+.wrangler
+dist/
diff --git a/worker/Cargo.lock b/worker/Cargo.lock
new file mode 100644
index 0000000..da2c61c
--- /dev/null
+++ b/worker/Cargo.lock
@@ -0,0 +1,1523 @@
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+ "proc-macro2",
+ "quote",
+ "syn",
+ "wasm-bindgen-shared",
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+ "windows_aarch64_msvc",
+ "windows_i686_gnu",
+ "windows_i686_gnullvm",
+ "windows_i686_msvc",
+ "windows_x86_64_gnu",
+ "windows_x86_64_gnullvm",
+ "windows_x86_64_msvc",
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+ "axum",
+ "bytes",
+ "chrono",
+ "futures-channel",
+ "futures-util",
+ "http",
+ "http-body",
+ "js-sys",
+ "matchit",
+ "pin-project",
+ "serde",
+ "serde-wasm-bindgen 0.6.5",
+ "serde_json",
+ "serde_urlencoded",
+ "tokio",
+ "url",
+ "wasm-bindgen",
+ "wasm-bindgen-futures",
+ "wasm-streams",
+ "web-sys",
+ "worker-kv",
+ "worker-macros",
+ "worker-sys",
+]
+
+[[package]]
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+ "serde-wasm-bindgen 0.5.0",
+ "serde_json",
+ "thiserror",
+ "wasm-bindgen",
+ "wasm-bindgen-futures",
+]
+
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+ "quote",
+ "syn",
+ "wasm-bindgen",
+ "wasm-bindgen-futures",
+ "wasm-bindgen-macro-support",
+ "worker-sys",
+]
+
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+ "js-sys",
+ "wasm-bindgen",
+ "web-sys",
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+
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+ "stable_deref_trait",
+ "yoke-derive",
+ "zerofrom",
+]
+
+[[package]]
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+ "syn",
+ "synstructure",
+]
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+checksum = "cff3ee08c995dee1859d998dea82f7374f2826091dd9cd47def953cae446cd2e"
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+]
+
+[[package]]
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+ "quote",
+ "syn",
+ "synstructure",
+]
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+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "aa2b893d79df23bfb12d5461018d408ea19dfafe76c2c7ef6d4eba614f8ff079"
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+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "zhconv"
+version = "0.3.2"
+dependencies = [
+ "console_error_panic_hook",
+ "daachorse",
+ "hex-literal",
+ "itertools",
+ "once_cell",
+ "regex",
+ "ruzstd",
+ "serde",
+ "sha2",
+ "strum",
+ "vergen",
+ "wasm-bindgen",
+ "zstd",
+]
+
+[[package]]
+name = "zhconv-worker"
+version = "0.1.0"
+dependencies = [
+ "axum",
+ "axum-extra",
+ "console_error_panic_hook",
+ "headers",
+ "serde",
+ "tower-service",
+ "worker",
+ "worker-macros",
+ "zhconv",
+]
+
+[[package]]
+name = "zstd"
+version = "0.13.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fcf2b778a664581e31e389454a7072dab1647606d44f7feea22cd5abb9c9f3f9"
+dependencies = [
+ "zstd-safe",
+]
+
+[[package]]
+name = "zstd-safe"
+version = "7.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "54a3ab4db68cea366acc5c897c7b4d4d1b8994a9cd6e6f841f8964566a419059"
+dependencies = [
+ "zstd-sys",
+]
+
+[[package]]
+name = "zstd-sys"
+version = "2.0.13+zstd.1.5.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "38ff0f21cfee8f97d94cef41359e0c89aa6113028ab0291aa8ca0038995a95aa"
+dependencies = [
+ "cc",
+ "pkg-config",
+]
+
+[[patch.unused]]
+name = "wasm-bindgen"
+version = "0.2.95"
+source = "git+https://github.com/rustwasm/wasm-bindgen#b3da9dc03639dc6585944d1827152d94e99541ca"
diff --git a/worker/Cargo.toml b/worker/Cargo.toml
new file mode 100644
index 0000000..4c62240
--- /dev/null
+++ b/worker/Cargo.toml
@@ -0,0 +1,33 @@
+[package]
+name = "zhconv-worker"
+version = "0.1.0"
+edition = "2021"
+authors = [ "Hung-I Wang <whygowe@gmail.com>" ]
+
+[package.metadata.release]
+release = false
+
+# https://github.com/rustwasm/wasm-pack/issues/1247
+[package.metadata.wasm-pack.profile.release]
+wasm-opt = false
+
+[features]
+default = []
+opencc = ["zhconv/opencc"]
+
+[lib]
+crate-type = ["cdylib"]
+
+[dependencies]
+worker = { version="0.4.2", features=['http', 'axum'] }
+worker-macros = { version="0.4.2", features=['http'] }
+axum  = { version = "0.7", default-features = false, features=["query"] }
+axum-extra = { version = "0.9", default-features = false, features=["typed-header"]}
+serde = "1.0"
+headers = "0.4"
+tower-service = "0.3.2"
+console_error_panic_hook = { version = "0.1.1" }
+zhconv = { path = "../", features=["serde"] }
+
+[patch.crates-io]
+wasm-bindgen = { git = "https://github.com/rustwasm/wasm-bindgen" }
diff --git a/worker/doc.txt b/worker/doc.txt
new file mode 100644
index 0000000..18e5834
--- /dev/null
+++ b/worker/doc.txt
@@ -0,0 +1,54 @@
+zhconv-rs 中文简繁及地區詞轉換
+
+REPO: https://github.com/gowee/zhconv-rs
+
+ENDPOINTS:
+
+1. POST /convert/{target}
+   Convert Chinese text between variants
+
+   Path Parameters:
+   - target: Variant type (zh-{hans, hant, tw, hk, cn})
+
+   Query Parameters:
+   - wikitext: boolean (optional) - Set to true to handle WikiText markup
+
+   Headers:
+   - Authorization: Bearer token (optional unless TOKEN env var is set)
+
+   Request Body:
+   - Plain text to be converted
+
+   Response:
+   - 200: Converted text
+   - 401: Unauthorized (if token validation fails)
+
+2. POST /is-hans
+   Check if text is Simplified Chinese
+   
+   Request Body:
+   - Text to analyze
+   
+   Response:
+   - 200: Confidence score (0.0 to 1.0, or NaN)
+
+3. GET /version
+   Returns the current version.
+
+Examples:
+
+   POST /convert/zh-hant
+   Content: \"简体字\"
+   Response: \"簡體字\"
+
+   POST /convert/hans?wikitext=true
+   Content: \"繁-{體}-字"
+   Response: \"简體字\"
+
+   POST /is-hans
+   Content: \"简体字\"
+   Response: \"1.0\""
+
+
+(The doc is generated by Amazon Q.)
+
diff --git a/worker/src/lib.rs b/worker/src/lib.rs
new file mode 100644
index 0000000..fbcf28e
--- /dev/null
+++ b/worker/src/lib.rs
@@ -0,0 +1,78 @@
+use zhconv::{is_hans_confidence, zhconv as zhconv_plain, zhconv_mw, Variant};
+
+use axum::{
+    extract::{Path, Query},
+    http::StatusCode,
+    response::IntoResponse,
+    routing::{get, post, Router},
+};
+use axum_extra::TypedHeader;
+use headers::{authorization::Bearer, Authorization};
+use serde::Deserialize;
+use tower_service::Service;
+use worker::*;
+
+use std::env;
+
+const DOC: &str = include_str!("../doc.txt");
+
+fn router() -> Router {
+    Router::new()
+        .route("/", get(doc))
+        .route("/convert/:target", post(convert))
+        .route("/is-hans", post(is_hans))
+        .route("/version", get(version))
+}
+
+#[event(fetch)]
+async fn fetch(
+    req: HttpRequest,
+    _env: Env,
+    _ctx: Context,
+) -> Result<axum::http::Response<axum::body::Body>> {
+    console_error_panic_hook::set_once();
+    Ok(router().call(req).await?)
+}
+
+pub async fn doc() -> &'static str {
+    DOC
+}
+
+#[derive(Deserialize)]
+pub struct ConvertQuery {
+    // #[serde(default = false)]
+    wikitext: Option<bool>,
+}
+
+pub async fn convert(
+    Path(target): Path<Variant>,
+    Query(params): Query<ConvertQuery>,
+    bearer: Option<TypedHeader<Authorization<Bearer>>>,
+    body: String,
+) -> impl IntoResponse {
+    if let Ok(token) = env::var("TOKEN") {
+        if bearer.as_ref().map(|b| b.token()) == Some(&token) {
+            return (
+                StatusCode::UNAUTHORIZED,
+                String::from("Unauthorized - Token is set by the TOKEN envvar"),
+            );
+        }
+    }
+    let wikitext = params.wikitext.unwrap_or(false);
+
+    let response_body = if wikitext {
+        zhconv_mw(&body, target)
+    } else {
+        zhconv_plain(&body, target)
+    };
+
+    (StatusCode::OK, response_body)
+}
+
+pub async fn is_hans(body: String) -> impl IntoResponse {
+    is_hans_confidence(&body).to_string()
+}
+
+pub async fn version() -> impl IntoResponse {
+    option_env!("CARGO_PKG_VERSION").unwrap_or("UNKNOWN")
+}
diff --git a/worker/wrangler.toml b/worker/wrangler.toml
new file mode 100644
index 0000000..1b8757b
--- /dev/null
+++ b/worker/wrangler.toml
@@ -0,0 +1,6 @@
+name = "zhconv"
+main = "build/worker/shim.mjs"
+compatibility_date = "2024-11-29"
+
+[build]
+command = "cargo install -q worker-build && worker-build --release"
\ No newline at end of file