mapbox/pixelmatch

Features

• Visual Regression Testing - Serves as a tool for detecting visual regressions by comparing baseline images against current screenshots.
• Image Analysis - Implements a JavaScript library for detecting mismatched pixels and quantifying differences between image arrays.
• Pixel Analyzers - Inspects pixel-level color data to identify and count mismatched pixels between two images.
• Difference Map Generation - Generates visual difference maps that highlight specific pixel changes for manual review.
• Image Comparison Libraries - Provides a JavaScript library for pixel-level image comparison and visual difference map generation.
• Spatial Difference Mapping - Generates pixel-by-pixel maps to visualize visual artifacts and differences between images.
• Visual Difference Analyzers - Produces spatial maps that visually highlight exactly where two images differ.
• Color Difference Thresholding - Identifies mismatched pixels by calculating the distance between color values against a configurable sensitivity limit.
• Image Comparison Utilities - Provides utilities for analyzing and diffing visual assets to detect pixel-level changes between versions.
• Low-Level Pixel Buffer Access - Provides direct access to contiguous memory buffers for high-throughput pixel-level comparison.
• CLI Image Processing Tools - Ships a command-line utility for comparing image files and exporting resulting difference maps.
• Anti-Aliasing Detection - Implements a heuristic filter to ignore pixel changes caused by sub-pixel rendering during image comparison.
• Image Processing - Provides image processing capabilities to compare two data arrays and count mismatched pixels.
• JavaScript Geospatial Libraries - Performs fast, pixel-level image comparison.
• Image Processing - Fast, pixel-level image comparison library.

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