Blur an image or video online free. Processed in your browser before you share it.Blur itbefore you share it.

What BlurThis does

BlurThis is a redaction tool that runs inside your browser tab. For images, you can blur, pixelate, or paint a solid black bar over any region of a photo or screenshot. Draw a rectangle for a line of text, switch to Draw and trace freehand around a face or a logo, or tap Find faces and Find text to get suggested boxes you can accept with one tap. Zoom in with a pinch or the on-screen buttons to check that no letter peeks out, then save a fresh PNG.

For video, choose an MP4, WebM, or MOV clip, drag the trim handles to the part you actually need, and place a blur or pixelate box. Press Blur In where the thing appears and Blur Out where it leaves, add as many timed boxes as the clip needs, and export up to 90 seconds as MP4 or WebM. There is no automatic per-frame tracking; you decide what is covered and when, which is also why the result is predictable.

Everything above happens on your device. The file is decoded onto a canvas in the page, edited there, and downloaded from the same tab. There is no upload step, no account, no queue, and no copy of your original on a server somewhere. If you want to confirm that rather than take our word for it, the Network panel in your browser’s developer tools will show that no request carries your pixels. How it works in detail.

Blur, pixelate, or black bar: which one to use

Blur smears the original pixels together. It looks natural and is the right choice for a face in a crowd, a messy desk behind the subject, or a name tag that only needs to be unreadable at a glance. It is a weak choice for anything short and guessable, because a light blur on six digits still leaves the shape of those digits in the file.

Pixelate replaces a region with large flat blocks. It hides structure better than blur at the same strength and reads clearly as “this was censored on purpose.” It suits licence plates, on-screen text in a video, and any place where a blur would look like a camera fault.

Black bar throws the pixels away and paints flat colour. Nothing is left to recover, which is why it is the only safe option for one-time codes, phone numbers, card and account digits, passwords, and API keys. If the secret would matter when guessed correctly, use the bar. Blur vs black bar, with examples.

Who uses BlurThis

• Support and success teams forward customer screenshots into Slack, Jira, or a vendor ticket. Emails, order numbers, and other customers in the same inbox view need a bar before that happens. Blur a screenshot.
• People selling or renting online post photos of a car, a flat, or a document. A registration plate, a house number, or an ID card in the corner is enough to locate you. Blur a number plate.
• Parents, teachers, and event photographers share group photos where not everyone has agreed to be posted. Blur the bystanders and keep the moment. Blur a face.
• Developers filing bug reports capture a terminal or a browser tab with an API key, a session token, or a .env line in view. Black-bar the secret, keep the stack trace. Blur text and keys.
• Anyone sharing a screen recording of a bug, a demo, or a call needs a name, a chat panel, or a notification hidden for a few seconds without re-recording the whole thing. Blur part of a video.

Six pages that are not another how-to

The editor is above. The rest of this site is written copy: how the tab processes a file, when a smear fails, and what GPS still sits on a Camera original. These six pages are different jobs, not six clones of how to blur a screenshot.

• How it works: the file stays in this browser tab. No upload step, no account, no copy of your pixels on a server.
• How to blur hub: pick a method for a face, a background, a screenshot, or a short clip, instead of reading the same walkthrough five times.
• Blur vs black bar: smear looks tidy. A bar replaces the pixels. Use the bar for numbers, passwords, and anything you would rotate if it leaked.
• PETS 2016 on mosaiced text: a research paper showed light mosaic and blur on documents can come back. Short OTPs are the easy case.
• PNG vs JPEG after you redact: chat compression and JPEG ringing can outline a weak cover. PNG is the boring safe export.
• Screenshots, EXIF, and GPS: a Camera photo can still carry coordinates. A new PNG from this canvas usually does not. Check which file you sent.