Every pair of eyes, covered before you post.
Drop in a video or a photo. Every face is found and the eyes covered — through movement, turns, and the frames where a detector would normally lose it. The file never leaves this device.
Free, no limitsNo accountNothing uploaded
Nothing is uploaded
Your file is opened, covered and saved inside your browser. There is no server to send it to, so there is nothing to leak, subpoena or breach.
Covered, not blurred
Blur is reversible — the detail is still in there, weighted. A solid cover replaces the pixels outright. There is nothing left to sharpen. Why a blur comes off.
Stays on the eyes
Each face is tracked from one frame to the next, so the cover follows the eyes through fast movement and close-ups — and stays the size of the eyes, not the whole face.
How it works
Three steps, and none of them involve a server
Drop the file in
A video or a photo — or a whole camera roll at once. MP4, MOV, WebM, JPEG, PNG, HEIC.
Every face is found and covered
On your own hardware, using the same video engine your camera app uses. The cover tracks each face through movement and turns.
Download it, or post it
Save it to your camera roll, or send it straight to TikTok, Instagram, YouTube and Facebook — one caption, every account, one press.
The whole idea
Speak freely.
Stay unseen.
You should be able to say the thing without handing over your face to say it. Sitr covers the eyes in your video or your photo on your own device, before anything is posted anywhere — so the part that identifies you never exists in the file you send, and never existed on anybody’s server either.
ستر
sitr — Arabic: to cover; to screen from view.
Why it holds up
A blur can be undone. This cannot.
Blurring is a weighted average of neighbouring pixels — the face is still in there, spread out. The transform is close to invertible, and there are published attacks that walk it backwards into a usable image.
Averaging a whole block down to one colour is not that. It is a projection into a space over a thousand times smaller, and the information is gone in the same sense a solid bar’s is. There is no inverse to run — only a guess.
Which is why this ships coarse blocks and solid bars, and will not ship a blur.
Blurred
Recoverable
Covered
Nothing left to recover
And then
Post to every account at once
Link your accounts once, then send a finished video — or a whole batch — to all of them with one caption and one press. No saving to the camera roll and opening four apps in turn. The file goes from your browser to the platform directly; it never passes through us on the way.
What it costs
Nothing. All of it.
Every file, every cover style, at full quality. The covering runs on your own device, so there is nothing per file for anybody to charge you for — and nothing is held back to sell you later.
Cover a video — free→The catch you are looking for
- A limit on how many — not here.Cover as many videos and photos as you like.
- A watermark — not here.The file you download is the file. Nothing is stamped on it.
- Lower resolution — not here.Full resolution out, whatever went in.
- A trial that runs out — not here.There is nothing to run out. It does not change next month.
- A card, or an account — not here.Open it and drop a file in. No sign-up, no email.
Questions
The ones worth asking
If yours is not here, the answer is almost always the same one: it happens on your device, and the file stays there.
Is my video really not uploaded?
Really. The covering runs on your own device, in the browser tab, and there is no upload step at any point. You can watch it work with the network disconnected — it finishes exactly the same. The only thing that ever leaves is a file you explicitly choose to post to a social account.
Is it actually free?
Yes — all of it. Every video and photo, every cover style, full resolution, no watermark and no limit on how many. There is no trial, no card and no paid version waiting behind it.
Do I need an account?
Not to cover anything — open it and drop a file in. An account is only for posting straight to TikTok, Instagram, YouTube and Facebook, because the link to those has to be kept somewhere. It holds an email address and those links. It never holds your files.
What if it misses an eye?
The finished file is decoded and checked again, frame by frame, by a second pass that is stricter than the first. Anything it finds is covered again, wider. If something still cannot be cleared, you are told exactly which moments to look at rather than left to find out later.
Does it work on a phone?
Yes, in a recent Chrome, Edge or Safari 16.4 and up. It uses the same video hardware your camera app does. A long clip takes longer on a phone than on a laptop, and the screen tells you roughly how long before you commit to it.
What about photos?
Same pipeline, same checks, and far quicker. You can drop a whole camera roll in at once and get them all back covered, with anything questionable flagged for a look.
Say what you need to say.
Free, no account, and nothing to uninstall afterwards.
Cover a video — free→