rsmbl/Resemble.js
Image analysis and comparison observed · 2026-08-28
Health v2 · maintenance only
32/100
- Activity 0
- Release rhythm 35
- Longevity 100
Flags: no_releases
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-03. Adoption (stars, forks) is never an input.
- gap_med: n/a
- age_days: 4941
- days_rel: n/a
- days_push: 939
- n_releases_24m: 0
Adoption not part of the score
4612 stars · 419 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded
Resemble.js is a JavaScript library for analyzing and comparing images using HTML5 canvas, producing pixel-level diff images and analysis data. It works in the browser and in Node.js (via node-canvas), and was originally built for visual regression testing tools like PhantomCSS.
Use cases
- compare two images and generate a visual diff
- visual regression testing of screenshots
- analyze image brightness and color statistics
- ignore antialiasing or colors when diffing screenshots
- detect differences between UI screenshots in e2e tests
When to choose
- you need pixel-level image comparison in JavaScript, in browser or Node.js
- you are building visual regression testing and need to ignore antialiasing noise
- you want basic image analysis (brightness, RGBA stats) without heavy dependencies
When to avoid
- you need actively maintained software with fast issue turnaround (it is in low-maintenance mode)
- you need high-performance or large-scale image processing (native libraries like OpenCV or ImageMagick are better)
- you need perceptual or semantic image similarity rather than pixel diffs
Facets
library · maturity maintenance
image-processing testing image-processing testing web-development browser cross-platform visual-regression image-diff html5-canvas screenshot-comparison nodejs
2 sources
- readme: https://github.com/rsmbl/Resemble.js · fetched 2026-08-28 · 2037426471f4
- homepage: http://rsmbl.github.io/Resemble.js/ · fetched 2026-08-29 · 56c9cbe89093
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| rsmbl/Resemble.js | main | 32 |
For agents
markdown · JSON · MCP: product_card(name="rsmbl/Resemble.js")
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem