Blur all faces in a group photo
Group photos are where face-blur tools quietly fail: detectors are tuned for one big selfie face, so the six small faces in the back row slip through. This tool scans the photo in overlapping tiles — the full frame plus close-up passes — precisely so the small faces in a crowd get caught, all on your device.
You still get the final say. Every detected face shows as a box: delete the boxes of people who’ve agreed to be shown, drag new boxes over anyone the scan missed, and pick blur, mosaic or emoji per face.
Preset: blur, tiled scan for small faces. Review the boxes — crowds always need one manual check.
Drop a photo here — or click to browse, or paste with Ctrl+V
JPG · PNG · WebP — faces found and hidden on your device, never uploaded
How it works
- Open this page — the tool is already set up for “Blur all faces in a group photo”.
- Drop your photo in, click to browse, or paste it with Ctrl+V.
- Faces are detected on your device; drag boxes over anything else to hide.
- Check the preview (hold “compare”), then download the flattened, metadata-free copy.
Why crowds are hard, and what to do about it
The face detector this tool uses (BlazeFace, the same family Google ships for mobile vision) resizes whatever it sees to a small internal image. A face that spans 5% of a wide group shot becomes a handful of internal pixels — too little to register. Running extra detection passes over zoomed tiles of the photo gives those small faces enough pixels to be found, at the cost of a second or two of scanning. That trade is right for a still photo.
Even so, no detector is complete: profiles, tilted heads, sunglasses, motion blur and partial occlusion all lower the odds. Treat the scan as a first pass. The one-glance check — “is every stranger’s face boxed?” — is yours.
Posting group photos, briefly and honestly
A practical etiquette that’s emerged everywhere from parenting forums to newsroom guidelines: people who didn’t agree to be posted get blurred, especially minors and especially in photos that will carry a location tag or a school name in the caption. It costs you thirty seconds here and zero image quality for everyone else in the shot.
Tips that save a re-edit
- Scan first, then zoom in (＋ button) and pan across the back rows — small missed faces hide there.
- Sunglasses and caps often survive detection, but not always. One drag adds the box.
- Use “Re-scan faces” after cropping decisions change — it re-runs detection and keeps your manual boxes.
- For a photo going to social media, remember the caption: names in text undo face blurring.
Before you post: zoom in and check every face, plate and label yourself. Auto-detection is a head start, not a guarantee — a missed face in a shared photo can’t be un-shared.
Frequently asked questions
How many faces can it handle?
There’s no cap — the scan reports everything it finds and each face gets its own box. Very large crowd photos take a bit longer since more tiles are scanned, still just seconds on a typical laptop.
It missed a face in the background. Why?
Most likely too small, turned away, or partly hidden. Detection improves with tiling but can’t be perfect. Drag a box over the face — a manual box is exactly as strong as a detected one.
Can I blur everyone except two people?
Yes — click the boxes on those two faces and delete them. Everything else stays blurred. This “blur strangers, keep friends” pattern is the most common way the tool gets used.