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File & Image Tools
Free online tool
Compare two graphic assets or photos using browser-based perceptual visual downsampling and structural similarity heuristics.
Tool workspace
Choose your file or image, set any options, then create your result.
Identifying near-duplicate photos, detecting resized variations of graphic assets and filtering duplicate image collections.
Resize ratios and color palette distributions are factored into the similarity heuristic, so slight crops may still register high similarity.
Perceptual similarity is an algorithmic approximation and cannot discern context, fine typography or subtle photographic watermark changes.
How to use it
Use the controls above, check the result, then copy or download it when available.
This tool evaluates general visual and perceptual similarity across arbitrary pictures, whereas screenshot diff requires identical pixel grids.
Use this tool whenever you need: Identifying near-duplicate photos, detecting resized variations of graphic assets and filtering duplicate image collections. It offers a fast, client-side workflow without sign-ups, installation or complex software.
Yes. All processing executes locally in your browser using client-side JavaScript. Your inputs, files and calculations remain private and are never uploaded to our servers.
Resize ratios and color palette distributions are factored into the similarity heuristic, so slight crops may still register high similarity. Important note: Perceptual similarity is an algorithmic approximation and cannot discern context, fine typography or subtle photographic watermark changes.
Related
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First file
Second file