Kiri is a visual tool designed for reviewing schematics and layouts of KiCad projects that are version-controlled with Git.

A library for comparing two HTML files/snippets and highlighting the differences using simple HTML. Includes support for comparing complex lists and tables

Perform visual regression test with a nice GUI as help. 💅 Only for Cypress!

Makes visual reviews of web app releases easy.

Compare 2 images using slider with Vue 3

Visual Diff‑Merge: Effortlessly compare and merge code in a responsive split‑view interface, with interactive change selection and support for over 180 programming languages.

A Node-based diffing tool to compare an array of URLs and flag differences between them

Catch visual regressions before users see them

Diffing tool for FBP graphs

QT desktop app for side-by-side image comparison, visual diff heatmaps, stacked image comparison, and synchronized zoom/pan. Built with Qt6 and libvips.

Visual design diffs in GitHub PRs. Before/after screenshots for every .pen design change. Free, open-source GitHub Action.

Shared visual regression capture, compare, and reporting - through GitHub Actions and/or CLI

VS Code extension for visually comparing Markdown files with rendered HTML diffs — supports KaTeX, Mermaid, GitHub Alerts, footnotes, and more.

Symfony Bundle for caxy/php-htmldiff library (https://github.com/caxy/php-htmldiff)

vdiff is a tool to visualize the difference of two webpages with the capability to run acceptance tests

Tool for detecting visual differences in images/PDFs.

Visual review for local and Cloudflare preview deploys. Compare DEV against LIVE with split, overlay/diff, synced navigation, response deltas, and SEO checks, plus a Pages addon and an MCP interface.

Run Kiri Revision Inspector for KiCad In GitHub Actions

"Onion-skin" visual differences between a reference document image and a scanned copy

Percy.io Capybara Selenium Static files Example