BlazeDiff
Blazing Fast
Algorithms that outperform traditional solutions
Lightweight
Minimal bundle size and low memory usage
Type-Safe
TypeScript support out of the box
BlazeDiff is a high-performance diff checking ecosystem. Built with cutting-edge algorithms and optimized for speed, BlazeDiff provides tools for comparing content, visualizing differences, and integrating diff functionality into your applications.
Quickstart
npm i @blazediff/cliCompare images directly from the command line with @blazediff/cli. Supports all algorithms: pixel diff, SSIM, MS-SSIM, GMSD, and the native Rust binary.
Powering
Usage
Detect Different Pixels
Image 1
Image 2
Result
Pure JavaScript image comparison — ~1.5x faster than pixelmatch with identical accuracy. Runs anywhere JS runs: browsers, Node.js, Deno, Bun.
Native Rust + SIMD binary via N-API — the fastest single-threaded image diff. ~3-4x faster than odiff on large images.
Compare Perceptual Quality
SSIM Structural Similarity Index
Image 1
Image 2
SSIM Map
GMSD Gradient Magnitude Similarity Deviation
Image 1
Image 2
Result
Find Object Inequalities
Lightning-fast structural object comparison with detailed change tracking.
Integrate in Your Tests
Drop-in image snapshot matchers for your test framework of choice.
Visualize Differences
Build image comparison interfaces with Web or React Components.