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Find exact and near-duplicate images using perceptual hashing. Supports batch upload, similarity scoring, and group management.
About this tool
Find exact and near-duplicate images using perceptual hashing. Supports batch upload, similarity scoring, and group management.
Duplicate Image Finder is a free image tool that runs entirely in your browser — nothing to install, no account to create, and your data never leaves your device. Open the page, add your input, and get a clean, copy-ready result in seconds.
Open Duplicate Image Finder on AltFTool — it loads instantly in your browser.
Upload or drag in the file you want to work with.
Adjust the settings and preview the result.
Download the finished file to your device.
Process images, audio, video, and documents directly in your browser — files never leave your device.
See the result before you export, so the final file is exactly what you expect.
Download output that's ready for your website, presentation, or client hand-off.
Yes — Duplicate Image Finder is completely free on AltFTool, with no signup, no trial limits, and no hidden costs.
Yes. Duplicate Image Finder runs in your browser, so what you enter or upload stays on your device instead of being sent to a server.
Find exact and near-duplicate images using perceptual hashing. Supports batch upload, similarity scoring, and group management. It's built for quick, everyday image tasks with results you can copy or download straight away.
Yes — Duplicate Image Finder works in any modern browser, on desktop, tablet, and mobile, with the same features everywhere.