ODiff
A blazing-fast SIMD-optimized image comparison library with Node.js API for visual regression testing.
What is ODiff?
ODiff is a high-performance image comparison library that detects visual differences between two images with extreme speed. It uses SIMD optimizations and low-level programming to compare images in milliseconds, solving the problem of slow visual regression testing in CI/CD pipelines. The library supports multiple image formats and provides detailed diff analysis with configurable thresholds.
Developers and QA engineers implementing visual regression testing, particularly those working with large screenshot suites in CI/CD environments. It's also valuable for teams comparing AI-generated images or maintaining design systems.
ODiff offers significantly faster comparison times than alternatives like PixelMatch or ImageMagick—often 5-8x faster—while maintaining accuracy. Its SIMD optimizations and memory efficiency make it ideal for high-volume comparison tasks where performance directly impacts CI costs and developer productivity.
Overview
A very fast SIMD-first image comparison library (with nodejs API)
Use Cases
Best For
- Visual regression testing for web applications
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