pixelmatch

A fast pixel-level image comparison library, originally created to compare screenshots in tests.

Release gate that catches "green build, healthy container, broken page" deploys: CSS audit, computed-style assertions, screenshot diff, and Docker candidate promotion with verified rollback.

Compare images using PHP

Codeless automate testing tool for software and game devs. Simple bot based on pixel match.

A place for free to play PC users that want to save keyboard and mouse from breaking!

Extension that improves the image diff view on GitHub.

HTML5 canvas visual regression tests for Jasmine using pixelmatch

Before/after screenshot diffing — pixel-diff two states of a page into one self-contained HTML review report.

A Ruby gem to create, compress, compare PNGs or JPEGs using Google Puppeteer/Chromium

Rebuild a frontend pixel-identical to a reference image. Coding-agent skill (Claude Code, Codex, Cursor) that measures the gap and returns an actionable per-region fix list — category, perceptual colour delta, the DOM element + CSS, and a fix hypothesis — with image strips, SSIM, and a convergence verdict.

Created screenshot of the page and compare with some model picture.

⚠️for personal use. PDFファイルの視覚的差分検知ツール

Self-hosted Chromatic-like VRT for Storybook — storycap capture + pixelmatch green/red diff + PR inline comment

🔍 parity-kit — AI-native visual, layout, animation & SEO parity scanner for web migrations. Pixel-perfect regression testing with Playwright. Zero flakes. One command.

Engineering guides for reliable automated visual regression testing of web maps — screenshot capture, tile sync, WebGL rendering, dynamic element masking, and CI gating for MapLibre GL, Mapbox GL, Leaflet & OpenLayers.

Visual regression CLI with smart selector healing and diffing

Automated visual & UI design review bot — compares Figma designs with deployed web apps using Playwright & pixelmatch.

DSH plugin: pixel-diff two screenshots into diff.png + triptych (pixelmatch) — 像素对比工具