Jint

Browser Compatibility ​

Jint.Browser combines Jint.HtmlParser's native markup tree with Jint's JavaScript runtime and browser-owned CSSOM.

Measured conformance ​

The gated in-process browser corpus passes 9,691 of 11,541 web-platform-tests (84.0%) across 341 documents and nine synthesized wrappers. This is the repository's selected vendored corpus, not a whole-browser score. The separate nightly upstream WPT scoreboard runs a broader set with the upstream runner and is informational rather than a merge gate.

Included ​

  • HTML parsing and script execution;
  • DOM and CSSOM bindings;
  • navigation, history, forms, cookies, and storage;
  • in-memory, origin-partitioned IndexedDB;
  • fetch, XHR, WebSocket, EventSource, and workers;
  • deterministic input dispatch;
  • accessibility, text, HTML, and Markdown extraction;
  • Chrome DevTools Protocol integration.

Not included ​

  • layout and rendering;
  • screenshots and PDF;
  • canvas, WebGL, media, or browser extensions;
  • WebAssembly;
  • full iframe scripting;
  • pixel-accurate input or layout-dependent actionability.

Feature detection remains honest: unsupported protocol and API operations fail rather than silently succeeding. See Supported Features and Limitations.