Duplicate Image Finder

About Duplicate Image Finder

Duplicate Image Finder is a free, browser-based image tool on AltFTool. Find exact and near-duplicate images using perceptual hashing. Supports batch upload, similarity scoring, and group management. Everything runs in your browser, so you can use Duplicate Image Finder instantly — no signup, no install, and no uploading your data to a server.

Find exact and near-duplicate images using perceptual hashing. Supports batch upload, similarity scoring, and group management. Use Duplicate Image Finder...

How to use Duplicate Image Finder

1. Open Duplicate Image Finder on AltFTool — it loads instantly in your browser.
2. Upload or paste the local asset data.
3. Choose the output mode or preview option.
4. Download or copy the finished result.

Why use Duplicate Image Finder

• Prepare local assets

  Convert or inspect images, audio, video, and files directly in the workspace. With Duplicate Image Finder, this stays fast and private in your browser.

• Preview before export

  Check the result visually where the tool supports previews. With Duplicate Image Finder, this stays fast and private in your browser.

• Download the final file

  Keep the output ready for testing, upload, or documentation. With Duplicate Image Finder, this stays fast and private in your browser.

Frequently asked questions

Is Duplicate Image Finder free to use?

Yes. Duplicate Image Finder is available as a free online tool on AltFTool.

What can I use Duplicate Image Finder for?

Find exact and near-duplicate images using perceptual hashing. Supports batch upload, similarity scoring, and group management.

Does Duplicate Image Finder work on mobile?

Yes. Duplicate Image Finder is designed for modern desktop and mobile browsers.