Blur / Pixelate Image
Drag boxes over names, faces or account numbers in a screenshot and pixelate or blur them. The effect is baked into the pixels, and the original never leaves your device.
Drag a box over the area you want to hide — the effect is applied when you release.
Blur or pixelate part of an image
Paste a screenshot, drag boxes over names, faces, account numbers or addresses, and download the censored copy. Pixelation and blur are baked into the pixels — and since everything runs locally in your browser, the uncensored original is never sent anywhere.
Blur / Pixelate Image censors the parts of a picture that shouldn't travel: names and account numbers on a payment screenshot, faces of bystanders, an address on a delivery photo, license plates, API keys in a terminal capture. Drag a box over each sensitive area — the mosaic or blur is applied the moment you release, with undo if you overshoot, and an 'apply to whole image' button for backgrounds.
This is the one image task where privacy isn't a nice-to-have, and the architecture matches: the original never leaves your device, and the exported file contains only the censored pixels — there is no hidden layer underneath, unlike shape-covered 'redactions' in some PDF tools that can be lifted off. For genuinely sensitive content, prefer strong pixelation over light blur: big mosaic blocks discard the information entirely.
FAQ
Blur or pixelate — which is safer?
Pixelate at a high strength. Each mosaic block collapses to one average color, destroying the detail inside it. A light gaussian blur leaves structure that can sometimes be partially reconstructed — if you use blur on text, use a high strength.
Can someone undo the effect on my exported image?
No. The downloaded file contains only the processed pixels. There is no original hiding underneath — the information is genuinely gone from that file.
How do I censor several areas?
Just drag one box after another — each release applies the effect. Undo steps back one area at a time (up to 8), and Reset returns to the untouched original.
Can I paste a screenshot directly?
Yes — press Ctrl+V (Cmd+V on Mac) anywhere on the page right after taking the screenshot. No need to save a file first.
What does the strength slider control?
For pixelate: the mosaic block size in pixels — bigger blocks hide more. For blur: the gaussian radius. The preview shows the real effect at export quality.
Why does this tool insist on running locally?
Because uploading an uncensored screenshot to a server — precisely to hide something in it — defeats the purpose. Here the uncensored original never leaves your machine; you can verify by loading the page and switching to airplane mode.
Which export format should I use?
PNG for screenshots with text (sharpest, lossless). JPG is fine for photos. Note that heavy JPG compression can slightly soften mosaic edges but never reveals what's underneath.
Is there a size limit?
Your device's memory is the practical limit; typical screenshots and phone photos process instantly.