What blurrer does
blurrer is a free, browser-based tool for blurring, redacting, and censoring parts of an image before you share it. Drop in a photo or screenshot, drag over anything you want to hide like a face, a license plate, an account number, a signature and download the result in seconds. There's nothing to install and no log in required. Cross platform capability works the same way on a laptop, a tablet, or a phone.
It's built for the everyday moment when a photo is almost ready to post, send, or upload, except for one detail that shouldn't be public. Whether it's a stranger's face in the background, a car's plate in a marketplace listing, an email address in a support screenshot, or a name on a document you're sharing as an example. Rather than skipping the photo entirely or cropping out half the frame, blurrer covers just that detail directly on the image, at full resolution, and hands you back a normal PNG or JPEG you can use anywhere.
Common uses
- Blurring faces in group photos before posting them publicly
- Covering license plates in car photos and marketplace listings
- Redacting emails, names, and account numbers in support or bug-report screenshots
- Blacking out addresses, ID numbers, or signatures on scanned documents
- Hiding sensitive fields in a spreadsheet or dashboard screenshot before sharing it
How to blur or redact an image
The whole process happens on one screen, and most edits take under a minute:
- Add your photo. Drag it into the drop zone, or click to choose a file from your device.
- Pick a tool. Use Blur to obscure an area with pixelation and blur, or Text box to cover it completely with a solid, colored bar — with an optional label.
- Drag over what you want to hide. Draw a box over the face, plate, text, or detail. Repeat for every area that needs covering.
- Adjust the settings. Increase blur strength for small or high-risk details, or change the box color, opacity, and text color to match your image.
- Zoom in to check your work. Switch to the Move tool (or tap the active tool again) to pan and zoom, and confirm nothing is still visible.
- Download. Save as PNG or JPEG. The file goes straight to your device — nothing else happens to it.
Tips for a clean result
A few habits make the difference between a redaction that holds up and one that doesn't. Zoom in before you draw, especially on smaller photos since it's much easier to see exactly where a face, plate, or line of text ends, so your box or blur doesn't leave a sliver of the original visible at the edge. When in doubt about how strong to make a blur, err on the side of more: you can always compare it against the Text box tool, which removes all doubt by replacing the pixels outright rather than distorting them. And before you share the final image, zoom in one more time on your exported download specifically confirming the finished file, not just the in-progress edit, is the one step that catches most mistakes.
Frequently asked questions
Is blurring reversible?
No. The blur tool works by shrinking the selected area down to a handful of pixels and blurring it before drawing it back at full size. The original detail is discarded, not just hidden, so it can't be reconstructed from the file you download. For anything especially sensitive, use a higher blur strength or switch to the solid Text box tool, which overwrites the pixels completely. Either way, zoom in on your exported image before sharing it to confirm the area is fully covered.
How secure are my uploads?
Your original photo is encrypted in your browser. The image you actually edit and download never leaves your device at all, it happens entirely in your browser.
Blur vs. pixelation vs. black box — which should I use?
blurrer's Blur tool actually combines pixelation and blur by default, which is stronger than either technique alone. For most faces and backgrounds, that's enough. For small, high-contrast details like license plates or printed text, a solid box is safer, since it replaces the pixels entirely rather than obscuring them.
Do I need to create an account?
No. There's no sign-up, login, or install, just open the page, upload an image, and start editing.
What image formats are supported?
You can upload common photo formats like JPEG, PNG, and WebP, and download your result as PNG or JPEG. PDFs and other document formats aren't supported directly but you can take a screenshot of the page you want to redact and upload that instead.
Does it work on my phone?
Yes. The editor is touch-friendly: drag to draw a blur or box, pinch or use the on-screen buttons to zoom, and drag with the Move tool to pan around a larger image.