Blur faces in photos before you share them: upload a picture, the on-device AI finds every face, and each one is blurred beyond recognition. Download the result as a PNG. Your photo never leaves your device — no uploads, no accounts.
Why blur faces in photos?
Photos shared online often include people who never agreed to be public: children at a school event, strangers in the background of a street shot, colleagues in a workplace photo. Blurring faces is the simplest way to share the moment while protecting their privacy — and in many workplaces and schools, it is a requirement, not a courtesy.
How to use it
- Choose a photo from your device.
- Press “Detect faces”. The AI model loads once (a one-time download), then finds every face in the picture.
- Each detected face is blurred with a margin around it, so hairlines and ears do not give anyone away.
- Download the blurred photo as a PNG and share that version instead of the original.
Worked example
Take a group photo from a birthday party with six people in it. Upload it and press detect: the tool outlines six faces and blurs each one, including the small face half-hidden at the back. The cake, the room and the decorations stay sharp — only the faces change. Download the PNG and post that version: the memory is shared, nobody is identifiable.
How the detection works
The tool runs a tiny neural network (Tiny Face Detector from the open-source face-api.js project) entirely in your browser. It looks for face-shaped patterns at several scales, which is why it catches both large foreground faces and smaller background ones. A confidence threshold filters out weak matches so random objects are not blurred by mistake. If a face is missed — extreme angles, heavy sunglasses, very small faces — the honest answer is that no automatic tool is perfect; check the result before sharing.
Privacy
Everything happens on your device. The photo is never uploaded, and the detection model runs locally after its one-time download. Closing the page discards the photo.
Frequently asked questions
Is the blur reversible? No — once you download the blurred PNG, the original face data is gone from that file. Keep your original safe if you need it.
Does it work on group photos? Yes. Every detected face is blurred, not just the largest one.
What if it misses a face? Re-check the result before sharing. Extreme profiles and tiny distant faces are the hardest cases for any detector.
Is it really free? Yes — no account, no watermark, no upload.
When blurring is not enough
Blurring a face removes the most identifying feature, but it is not a complete anonymisation tool. Distinctive clothing, a name badge, a tattoo, a car number plate or a location in the background can still identify someone. Before posting a sensitive photo, check the whole frame: crop out badges and plates, and avoid backgrounds that give away a school, a home address or a workplace entrance. For photos where identification would genuinely harm someone — a protest, a refuge, a child protection context — consider not posting at all, or cropping the person out entirely. Blur is a strong everyday safeguard, not a guarantee.
Tips for clean results
Start from the highest-resolution original you have: detection works better on sharp faces than on compressed copies, and the download keeps your photo’s quality. If the tool finds a face you wanted left sharp — a public figure speaking at an event, for instance — you cannot un-blur just that face here; instead, download the result and restore that region from the original in any photo editor. And always review the output at full size before sharing: a face that looks blurred in a thumbnail can still be recognisable when enlarged.
Related tools
Difuminar Rostros — versión en español · Background Remover · Blur Image Tool.
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