Try the released PDF engine directly in the browser

.gitattributes

@@ -0,0 +1,3 @@
+# Preserve the exact upstream font license bytes and their original whitespace.
+docs/assets/playground/fonts/*-OFL.txt -text whitespace=-blank-at-eol
+docs/assets/playground/LICENSES.txt text eol=lf whitespace=-blank-at-eol

.github/workflows/docs.yml

@@ -21,7 +21,22 @@ jobs:
         with:
           python-version: '3.12'
           cache: pip
+      - uses: actions/setup-node@v6
+        with:
+          node-version: '22'
+      - uses: dtolnay/rust-toolchain@stable
+        with:
+          toolchain: '1.97.0'
+          targets: wasm32-wasip1
       - run: python -m pip install -r requirements.txt
+      - run: python tools/build_playground.py
+      - run: node tools/verify_playground.mjs
+      - uses: actions/upload-artifact@v4
+        with:
+          name: playground-verification
+          path: |
+            docs/assets/playground/build.json
+            docs/assets/playground/verification.json
       - run: python -m mkdocs build --strict
       - run: python tools/check_site.py site
       - name: Include search notification ownership file

.gitignore

@@ -1 +1,9 @@
 site/
+playground/node_modules/
+playground/engine/target/
+playground/verification/
+docs/assets/playground/fullbleed.wasm
+docs/assets/playground/fonts.zip
+docs/assets/playground/wasi/
+docs/assets/playground/build.json
+docs/assets/playground/verification.json

README.md

@@ -4,13 +4,21 @@ Published at https://docs.fullbleed.dev/ using GitHub Pages.
 
 ```bash
 python -m pip install -r requirements.txt
+rustup target add wasm32-wasip1
+python tools/build_playground.py
+node tools/verify_playground.mjs
 python -m mkdocs build --strict
 python tools/check_site.py site
 python -m mkdocs serve
 ```
 
 Changes to `main` build, check internal links and metadata, then deploy through `.github/workflows/docs.yml`. Pull requests run the same build checks without deployment.
 
+The browser playground build needs Rust and Node 20 or newer. CI uses Rust
+1.97.0 and Node 22. Its locked adapter compiles the published engine; it does not
+modify or vendor the engine source. See [playground/README.md](playground/README.md)
+for limits, privacy behavior, and native/WASI verification.
+
 ## Updating a release
 
 Reference pages come from the engine repository's release tag. Keep hand-authored introductions and guides here; import API, CLI, CSS, architecture, print, and performance references with: