HTML Size Analyzer

Analyze HTML size and catch bloat like inline images, large React hydration state, or code duplication.

Lockfile Lint

Lint an npm or Yarn lockfile to analyze and detect security issues via predefined security policies.


No WebDriver required. No manual timeouts needed. Cross-browser testing out-of-the-box.


Supports editing text and images in a PDF across all platforms.

Jest Image Snapshot

Jest matcher for image comparisons. Most commonly used for visual regression testing.


Puppeteer to Playwright conversion script


By mirroring traffic to and from your machine, mirrord surrounds your local service with a mirror image of its cloud environment.

WebPageTest GitHub Action

A GitHub Action that lets you automatically run tests against WebPageTest on code changes.

Siteimprove Accessibility Checker

Jumpstart Your Web Accessibility Efforts Directly in Google Chrome