# uber-archive/image-diff

Create image differential between two images

Repository: https://github.com/uber-archive/image-diff
Canonical: https://ross.abutalabs.com/products/image-diff
Language: JavaScript
License: MIT
License Family: permissive
Archived: true
Last push: 2017-08-28T01:58:44+00:00

## Health v2 (maintenance only)
Score: 10/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 4674, "days_push": 3293, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases, archived
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2439, forks 95 (observed 2026-08-28T04:06:51.560194+00:00)

## What it is
A deprecated Node.js library that generates a differential image between two images and reports whether they are the same, built on ImageMagick. It was created for visual regression testing but is no longer maintained.

## Use cases
- compare two images and highlight differences
- visual regression testing for screenshots
- generate a diff image between two pngs
- check if two images are pixel-identical
- compute pixel difference percentage between images

## When to choose
- you need a quick Node.js image diff and can accept an unmaintained dependency
- you want a diff image with optional shadow of unchanged parts

## When to avoid
- starting a new project - use pixelmatch or looks-same instead
- you need maintained software or timely bug fixes
- you want to avoid an ImageMagick system dependency

## Facets
- artifact type: library
- maturity: abandoned
- function: image-processing, testing
- domain: image-processing, testing, developer-tools
- platform: cross-platform
- tags: visual-regression, image-diff, pixel-comparison, imagemagick, deprecated, nodejs

## Member repositories
- uber-archive/image-diff (main) score 10

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:06:51.560194+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T02:30:46.321034+00:00, confidence not recorded.
  - readme: https://github.com/uber-archive/image-diff (fetched 2026-08-28T04:06:51.560194+00:00, sha 532c13db64ea)
- Data as of 2026-08-30T08:39:29.467469+00:00.