Blur faces before posting a photo publicly.

If you're posting a screenshot with someone's face in it — a team photo, an event group shot, a document with a headshot — anonymizing them before you post is table-stakes courtesy. Auto-detect makes the batch case one-click.

Time: 2 minutesTool: /sanitize/Uploads: None

Two routes

Two tools cover the same job at different tradeoffs:

/sanitize/ — one-pass privacy combo. Toggle "Blur faces" on, drop the image, download. Bulk-friendly. Uses the browser's native FaceDetector where available (Chrome, Edge, some Chromium forks).
/blur/ — manual painting. Draw a blur zone with your mouse or finger. Works everywhere. Best when auto-detect misses a face (turned away, partial, sunglasses, low light).

Auto-detect flow — fastest

Open /sanitize/. Confirm "Blur faces" is toggled on in the sidebar.
Drop the image. Or many images — bulk mode processes each.
Click "Sanitize + Download ZIP." The face-detector runs on each image, blurs every detection, and packs the result into a ZIP.
Skim the previews. If the sidebar says "faces: no detections" for an image with obvious faces, either the browser doesn't support FaceDetector (Safari, Firefox) or the faces are turned away / obscured. Go manual.

Manual flow — catches what auto misses

Open /blur/. Drop the image.
Pick blur radius. 20-40 pixels is usually enough for a face. Solid black-box mode is available if you want unambiguous redaction (courtroom / legal work).
Draw a rectangle over each face. Or use the brush for organic shapes.
Undo / redo with the toolbar or Ctrl+Z. Export PNG or JPG.

Reversibility warning. Blur is not reversible in principle — a Gaussian blur discards information — but very light blurs can sometimes be partially recovered with deconvolution attacks. If the image will be public and the face must stay hidden even from a determined attacker, use solid black-box mode instead of blur.

What about metadata?

Blurring a face changes pixels. It does not touch the image's EXIF, which may still contain GPS coordinates of where the photo was taken, the camera model, and the exact time. If you're anonymizing for privacy, blur faces AND strip EXIF. /sanitize/ does both in one pass — leave "Strip EXIF" toggled on. See strip EXIF for the standalone flow.

Bulk-processing a folder

Drop all files at once onto /sanitize/'s drop zone. The tool processes each, packs the results into a ZIP, and downloads once. On a modern laptop with FaceDetector, a batch of 20 images completes in under 5 seconds.

Do it now

Open the tool in a new tab. Nothing uploads.

→ Open /sanitize/