What Is the IMG369 Face Blur Tool?
Face Blur finds every face in a photo and blurs it automatically, no manual selection needed. It's built for anonymizing people in a photo before sharing it publicly, whether that's bystanders in a street photo, kids in a family picture, or anyone who didn't ask to be in the shot. There's no account, no daily limit, and no watermark.
This is a privacy tool first, a photo-editing tool second: the goal isn't to make a photo look better, it's to make sure a specific person can't be identified in it before you send it somewhere it might be seen by people who shouldn't recognize them.
How It Works
When you upload a photo, an on-device AI face detection model scans it and returns a bounding region for every face it finds. Your browser then draws a heavily blurred version of the photo clipped to each of those regions, layered over the sharp original. Everything happens locally using the Canvas API and a small AI model running in WebAssembly, so nothing is uploaded to a server.
Face Blur vs. Background Blur: Different Goals
IMG369's Background Blur tool blurs everything except a detected person, to make that person stand out, a look-better tool for portraits and product shots. Face Blur does the opposite: it blurs only the detected faces and leaves everything else sharp, specifically to make people unidentifiable rather than to flatter them. If your goal is "make my subject pop," use Background Blur. If your goal is "make sure nobody in this photo can be recognized," this is the tool.
Why Blur Locally Instead of a Server Tool
Handing a photo full of identifiable faces to a server-based tool means a copy of it, faces and all, passes through infrastructure you don't control before you even get to blur anything. For a tool whose entire purpose is protecting someone's identity, that's a real contradiction, uploading the exact thing you're trying to anonymize to a third party first. Running the same AI detection model in your browser skips that entirely: the photo and the detection results never leave your device.
Common Uses
Blurring bystanders in a street or event photo before posting it, anonymizing people in a screenshot before sharing it publicly, protecting children's faces in photos shared outside the family, redacting faces from a document or presentation for privacy compliance, or preparing an image for a public presentation where identifying faces isn't appropriate.
Tips for Best Results
The AI model works best on faces that are reasonably visible and not extremely small in the frame. Very distant faces in a crowd, faces turned far to the side, or faces partly covered by an object can occasionally be missed, so it's worth checking the result carefully before sharing a photo where privacy genuinely matters. Increase the blur intensity slider if a face is still partly recognizable at the default setting.
IMG369 vs. Other Ways to Blur Faces
Manually drawing a blur brush over each face in Photoshop works, but requires the software and finding every face yourself, easy to miss one in a crowd shot. Professional redaction software, the kind newsrooms and legal teams use for document and photo redaction, does this well but is typically paid enterprise software built for a different scale of use. Free online face-blur tools skip the manual work but need the photo, full of identifiable people, uploaded to their server first. IMG369 detects every face automatically and blurs entirely on your device.
| Method | Cost | Photo leaves your device | Manual face-finding needed |
|---|---|---|---|
| IMG369 | Free | No | No, automatic detection |
| Photoshop manual blur brush | Paid subscription | No | Yes, find each face yourself |
| Professional redaction software | Paid, enterprise-priced | Depends on tool | Often semi-automatic |
| Typical online face-blur tool | Free with limits | Yes, uploaded to a server | No, automatic |
Summary
IMG369's Face Blur tool detects every face in a photo automatically with AI and blurs each one with an adjustable intensity slider, entirely inside your browser with no upload and no signup, so the exact thing you're trying to keep private never has to leave your device. The sections above cover how this differs in purpose from Background Blur; the FAQ below covers detection accuracy and device support.
Frequently Asked Questions
Is the Face Blur tool really free?
Yes. There's no signup, no watermark, and no limit on how many photos you process. The AI model runs on your own device, so there's no server cost to recoup by limiting you.
Does my photo get uploaded anywhere?
No. Faces are detected and blurred entirely in your browser using an on-device AI model. Your photo is never sent to a server.
Do I need to select the faces myself?
No. An AI face detection model finds every face in the photo automatically and blurs each one. There's nothing to click or select.
What if the tool misses a face?
Very small, heavily angled, or partially hidden faces can occasionally be missed by any automatic detector. Check the result before sharing a photo where privacy matters.
Can I control how strong the blur is?
Yes, drag the blur intensity slider and every detected face updates instantly, since only the face detection step uses AI.
Will this work on my phone?
Yes, it works on modern mobile browsers as well as desktop. Very large photos are automatically scaled down first to keep it running smoothly on phones.