Image Compare & Pixel Difference
Compare two images with interactive split slider, side-by-side zoom, and pixel diff.
Drop Image A here
Original / Reference version
Drop Image B here
Modified / Altered version
Drop two images to unlock interactive split-slider and pixel-diff comparison.
System Architecture: Image Compare & Pixel Difference
Deterministic, client-side execution path from raw input pixel buffer to production artifact.
Ingests both visual assets, aligns spatial coordinates, and detects dimension disparities across buffers.
Executes channel-by-channel difference evaluation to identify modified pixels beyond configurable sensitivity thresholds.
Renders synchronized split-slider and high-contrast red pixel delta heatmaps with percentage alteration scores.
How It Works
Understand the process and the deterministic browser engineering behind this utility.
1. Upload Two Versions
Drop your original reference image (A) and your modified revision (B). Images are aligned in transient browser memory.
2. Select Interactive View
Slide across the split-slider to inspect visual alignment, or switch to the difference map to highlight changed pixels.
3. Tune Delta Sensitivity
Adjust the threshold slider to distinguish between lossy JPEG/WebP compression artifacts and genuine design modifications.
Deterministic Execution Pipeline
Zero-Cloud, High-Performance Client Processing
Pixel differences are computed deterministically by comparing the RGBA channels of each corresponding coordinate across both canvas buffers. When the maximum channel delta exceeds the user-configured sensitivity threshold, the pixel is flagged in high-contrast red. Computations run locally without transmitting images over the network.
Underlying Browser Technologies:
- Aspect-ratio alignment & normalizer
- Real-time split slider canvas rendering
- Deterministic pixel-by-pixel delta shader
- Percentage changed metric computation
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