diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..4f5d81c
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,36 @@
+name: CI
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+env:
+  CARGO_TERM_COLOR: always
+
+jobs:
+  check:
+    name: Check
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [ubuntu-latest, macos-latest, windows-latest]
+    steps:
+      - uses: actions/checkout@v4
+      - uses: dtolnay/rust-toolchain@stable
+      - uses: Swatinem/rust-cache@v2
+      - run: cargo build --release
+      - run: cargo test
+
+  lint:
+    name: Lint
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: dtolnay/rust-toolchain@stable
+        with:
+          components: clippy, rustfmt
+      - uses: Swatinem/rust-cache@v2
+      - run: cargo clippy -- -D warnings
+      - run: cargo fmt --check
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
new file mode 100644
index 0000000..8434f61
--- /dev/null
+++ b/.github/workflows/release.yml
@@ -0,0 +1,46 @@
+name: Release
+
+on:
+  push:
+    tags: ["v*"]
+
+permissions:
+  contents: write
+
+jobs:
+  build:
+    name: Build ${{ matrix.target }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        include:
+          - target: x86_64-unknown-linux-gnu
+            os: ubuntu-latest
+          - target: x86_64-apple-darwin
+            os: macos-latest
+          - target: aarch64-apple-darwin
+            os: macos-latest
+          - target: x86_64-pc-windows-msvc
+            os: windows-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: dtolnay/rust-toolchain@stable
+        with:
+          targets: ${{ matrix.target }}
+      - uses: Swatinem/rust-cache@v2
+      - run: cargo build --release --target ${{ matrix.target }}
+      - name: Package (Unix)
+        if: runner.os != 'Windows'
+        run: |
+          cd target/${{ matrix.target }}/release
+          tar czf ../../../fledge-plugin-speedtest-${{ matrix.target }}.tar.gz fledge-speedtest
+      - name: Package (Windows)
+        if: runner.os == 'Windows'
+        run: |
+          cd target/${{ matrix.target }}/release
+          7z a ../../../fledge-plugin-speedtest-${{ matrix.target }}.zip fledge-speedtest.exe
+      - uses: softprops/action-gh-release@v2
+        with:
+          files: |
+            fledge-plugin-speedtest-*.tar.gz
+            fledge-plugin-speedtest-*.zip
diff --git a/src/main.rs b/src/main.rs
index 1032677..eb96d32 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -16,19 +16,9 @@ const UP_URL: &str = "https://speed.cloudflare.com/__up";
 /// on fast links. We rotate through the list, repeating until --duration is up.
 /// Upload sizes are capped lower because Cloudflare's `__up` endpoint resets
 /// the connection on very large bodies.
-const DOWNLOAD_SIZES: &[u64] = &[
-    100_000,
-    1_000_000,
-    10_000_000,
-    25_000_000,
-    100_000_000,
-];
-
-const UPLOAD_SIZES: &[u64] = &[
-    100_000,
-    1_000_000,
-    10_000_000,
-];
+const DOWNLOAD_SIZES: &[u64] = &[100_000, 1_000_000, 10_000_000, 25_000_000, 100_000_000];
+
+const UPLOAD_SIZES: &[u64] = &[100_000, 1_000_000, 10_000_000];
 
 const WARMUP_BYTES: u64 = 100_000;
 const DEFAULT_DURATION_SECS: u64 = 10;
@@ -155,7 +145,8 @@ fn measure_latency(client: &Client, show_progress: bool) -> Result<f64> {
             .send()
             .context("latency probe")?;
         let mut sink = Vec::new();
-        resp.read_to_end(&mut sink).context("draining latency probe")?;
+        resp.read_to_end(&mut sink)
+            .context("draining latency probe")?;
         let ms = start.elapsed().as_secs_f64() * 1000.0;
         if ms < best {
             best = ms;
@@ -259,12 +250,7 @@ fn measure_upload(client: &Client, window: Duration, show_progress: bool) -> Res
             let stop_clone = Arc::clone(&stop);
             let handle = thread::spawn(move || {
                 while !stop_clone.load(Ordering::Relaxed) {
-                    draw_progress_label(
-                        "Upload",
-                        start.elapsed().min(window),
-                        window,
-                        &label,
-                    );
+                    draw_progress_label("Upload", start.elapsed().min(window), window, &label);
                     thread::sleep(PROGRESS_TICK);
                 }
             });