Blur faces or any area in a video, without uploading it

Two ways to hide what should not be shown

Plenty of good footage contains something that should not be shown: a bystander who never agreed to be filmed, a child at a school event, the licence plate of a parked car, a name on a document, an email or a password visible on a screen. Blurring just that lets you share the rest of the video.

"All faces (automatic)" is made for people. Vidmini looks for faces in the video and pixelates each one it finds, frame after frame, without you drawing anything. The boxes are slightly enlarged to cover hair and chin, and they are held for a moment when a face is briefly lost, so the blur does not flicker off.

"An area I draw" is made for everything else: a plate, a screen, a logo, a document. Draw one rectangle on the video preview, directly over what you want to hide, and redraw it as often as you like until it covers the right spot. In both modes you can limit the effect to a time range, for example the few seconds where the sensitive detail is actually on screen.

Automatic face blur, on your device

Face detection runs in your browser, not on a server. The first time you use it, a small 1.2 MB detection model (UltraFace, MIT licence) is downloaded from vidmini.com, the same way the page loads its own code. Your video is never sent anywhere: the model comes to your device, the video does not go to a server.

Be honest with yourself about what automatic detection can do. It finds clear, reasonably sized faces well, but it can miss a face that is very small in the frame, turned sideways or away, or partly hidden by a hand, a hat or another person. That is why faces mode defaults to Strong pixelation, and why you should always watch the result before sharing it. If a face slipped through, use "Continue with this file" to send the result back into the tool and cover it with "An area I draw".

Pixelation that cannot be undone

Vidmini does not apply a soft, smooth blur. It pixelates the area: the pixels inside the box are replaced by large blocks of flat color, a mosaic. The original detail is thrown away, so there is nothing left in the file to recover.

That matters. A light Gaussian blur on text or a face can sometimes be partially reversed or guessed, especially on short words or numbers. A mosaic with large blocks cannot. Choose Strong for text, plates and faces that must stay unreadable; Light or Medium are enough when the goal is only to draw less attention to something in the background.

Sensitive footage should not be uploaded to hide it

There is an irony in most online blurring tools: to hide a face from the public, you first upload the unblurred video to a stranger's server. For a journalist protecting a source, an HR team handling an internal recording, a school sharing a class video or anyone posting a clip that shows other people, that upload is exactly the risk you were trying to avoid, and under data protection rules such as the GDPR it is one more party handling personal data.

With Vidmini, the video is read and re-encoded by your own browser, using the WebCodecs API and your device's hardware encoder. The page is not allowed to send your file anywhere, and you can check it: load the page, turn off your connection, and blur an area. It still works.

Limits to know before you start

In "An area I draw" mode, the box stays where you drew it and does not follow a face or an object that moves across the frame. For a moving plate or object, first cut the video into short segments with the trim tool, then place a box on each segment; a slightly larger box also gives margin for small movements. For moving people, faces mode is usually the better choice.

To hide several areas, blur the first one, then use "Continue with this file" to send the result back into the tool and draw the next box. The video is re-encoded to apply the effect, while the audio is copied as-is. The tool accepts every format the site can read: MP4, MOV (including iPhone videos), WebM, MKV, M4V, and older formats such as AVI or WMV through the on-device fallback converter.