01
Pick a folder
Choose any folder with up to 200 photos. Your browser reads the files directly from disk, they are never transmitted anywhere, and never modified.
Free toolIn your browserNo upload
Free AI Duplicate Photo Finder
Finds exact duplicates and near-duplicates (bursts, edits, resizes) and shows which copy to keep.
Free AI. No uploads. No registration. No credit card. Everything runs locally in your browser. Your photos never leave your computer.
✓100% Free✓No registration✓No account required✓No credit card✓Runs entirely in your browser✓Images never leave your computer✓AI processed locally✓Fast WebGPU acceleration✓Nothing stored on our servers
Review similar shots across your complete archive
Start on your Mac with 200 photos. Unlock PhotoCore Full to index your complete archive across folders, external drives, and NAS.
How it works
Local AI, in three steps
02
Two detectors, one pass
A perceptual hash catches pixel-level duplicates, while SigLIP 2 embeddings catch bursts, edits and resizes that byte-comparison tools miss.
03
Review the groups
Duplicates appear in groups with the best copy (highest resolution, largest file) marked "Keep", the identical copies marked in red, and the total recoverable megabytes on top. This demo is read-only. PhotoCore for Mac groups similar shots and marks the best one, so you decide what to keep.
04
Download PhotoCore for your complete archive
The browser tools are built for quick analysis of up to 200 photos. PhotoCore for Mac indexes your complete archive, works completely offline and keeps your AI index permanently on your computer.
The comparison
Why it's different
Privacy by architecture
Your privacy comes first
- ✓Your images are never uploaded.
- ✓Everything happens inside your browser.
- ✓We never store your photos.
- ✓We never see your files.
- ✓No login.
- ✓No tracking of your images.
- ✓No cloud processing.
Most "online photo tools" send your images to a server. This one works the other way around: the AI model (~95 MB, one-time download from the Hugging Face CDN) comes to you, and everything after that happens on your device. Verify it yourself: open your browser's DevTools → Network tab. After the model download you will see zero outgoing requests while Duplicate Photo Finder works through your photos. The page's Content-Security-Policy technically blocks connections to any host other than the model CDN, so your photos cannot be uploaded, even by accident.
This is the same philosophy as the PhotoCore app for Mac: your entire photo archive, organized and searchable by meaning, with zero cloud, on drives you own, even offline.
FAQ
Questions, answered
Can it find edited duplicates?
Yes. Beyond pixel-identical copies, the AI embedding similarity catches edited versions (crops, filters, color corrections, exports) because their meaning stays the same even when the pixels change.
Can it detect resized images?
Yes. Both detectors are resolution-independent: the perceptual hash normalizes size before comparing, and AI embeddings ignore resolution entirely.
Does it delete files?
Never. This browser tool is read-only. PhotoCore for Mac groups similar shots and marks the best one, so you decide what to keep.
How similar must two images be?
You decide with the tolerance slider: from virtually identical down to same scene, different take. Pairs the perceptual hash recognizes as the same image are additionally tagged "Identical".
What is the difference between "Identical" and "Duplicate"?
"Identical" means the perceptual hashes match, the same image, possibly re-saved or resized. "Duplicate" means the AI considers them the same shot, like a burst frame or an edited copy, even when the pixels differ.
Is this tool really free?
Yes. No payment, subscription or trial is required. The browser tools are completely free, up to 200 photos per folder.
Do I need to create an account?
No. Just open the page and start using it. No login, no email, nothing to sign up for.
Do I need a credit card?
No. There is nothing to pay and nothing to unlock.
Are my images uploaded?
Never. The AI model is downloaded to your browser, and every photo is analyzed on your device. The page's Content-Security-Policy technically prevents any upload.
Where does the AI run?
Inside your browser, using your computer's GPU (WebGPU) or CPU (WebAssembly). The model is SigLIP 2, the same one used by the PhotoCore Mac app.
Can you see my photos?
No. Your photos never reach our servers, we have nothing to see. There are no image trackers and no analytics on your files.
Do you store anything?
No images are sent to our servers. Results live only in your browser; a local cache (embeddings and thumbnails) stays on your device and you can clear it anytime from your browser settings.
Does it work offline?
Once the page and the AI model are loaded, all photo analysis happens locally. The one-time model download (~95 MB) is the only thing that needs a connection.
Which browsers are supported?
Chrome and Edge give the best experience (WebGPU acceleration and folder access). Safari and Firefox work too, with automatic fallbacks.
Is there a limit?
The browser version is intended for quick analysis, up to 200 photos per folder. Start on your Mac with 200 photos. Unlock PhotoCore Full to index your complete archive across folders, external drives, and NAS.
Related reading: How to find duplicate photos · Photo culling and quality filter · How to remove blurry photos
PhotoCore Tools
More free PhotoCore tools
Semantic Photo SearchSearch your photos by describing them, no upload.AI Photo OrganizerAuto-group your photos by visual content.Constellation: Similarity MapSee your whole folder as a 2D similarity map.Semantic BridgeFind the path of real photos between any two photos.Best Shot PickerElect the best shot of every burst, with reasons.
Looking for more?
Liked the demo? The app is the real thing.
These browser tools are designed for quick analysis. PhotoCore for Mac indexes your complete archive, searches 10,000 indexed photos in under 50 ms, works completely offline and keeps your AI index permanently on your computer.
Free AI. No uploads. No registration. No credit card. Everything runs locally in your browser. Your photos never leave your computer.
Download on Mac App Store