yahoo/blink-diff

Health v2 · maintenance only

Flags: no_releases archived

Adoption not part of the score

1204 stars · 90 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

Blink-Diff is a lightweight JavaScript image comparison tool by Yahoo, usable both as a command-line utility and as an npm library. It compares PNG images pixel-by-pixel with configurable thresholds, perceptual comparison, cropping, and block-out regions, producing a highlighted difference image.

Use cases

• compare two png images and highlight differences
• visual regression testing of screenshots
• detect pixel differences between ui screenshots
• generate a diff image showing what changed between two images
• compare website screenshots in automated tests
• ignore small pixel differences when comparing images

When to choose

• you need a simple npm-based PNG diff tool for visual regression tests
• you want both a CLI and a programmatic JavaScript API
• you need threshold-based or perceptual image comparison with block-out regions

When to avoid

• you need to compare formats other than PNG
• you need an actively maintained tool - the last release was in 2020
• you need advanced perceptual hashing or large-scale image comparison pipelines

Facets

cli-tool · maturity maintenance

image-processing testing cli image-processing testing developer-tools cli cross-platform image-diff visual-regression png screenshot-comparison perceptual-diff nodejs

Member repositories

For agents

markdown · JSON · MCP: product_card(name="yahoo/blink-diff")