Blur Image
Blur Image — instantly, in your browser, with nothing uploaded.
Drag & drop your image here, or click to choose. Everything runs in your browser — nothing is uploaded.
Blurring is used to hide sensitive detail, to soften a background before adding text over it, or to create a frosted-glass banner. Drag the radius slider and the preview updates instantly; when it looks right, download it.
Frequently Asked Questions
How do I use the blur image tool?
Drop your image onto the box above, adjust the controls, and the preview updates as you drag. When it looks right, choose PNG, JPG or WEBP and press Download. Nothing is uploaded at any point.
Are my files uploaded to a server?
No. The file is decoded and re-encoded directly in your browser using JavaScript and WebAssembly, and never leaves your device. That is what makes it safe for private photos, client work and anything confidential, and it is why the tool keeps working with your network disconnected once the page has loaded.
Can blurring be undone by someone else?
A strong Gaussian blur genuinely destroys the underlying pixel data, so it cannot be reversed from the exported file. Be careful with very light blurring over text, though — a small radius can sometimes still be readable, so use a generous radius for anything sensitive.
Is there a limit or a watermark?
No limits, no watermark, no signup and no cost. Because the work happens on your own device there is no server bill to cover, so there is nothing to meter — the only real constraint is your device’s memory on very large files.
Does this work on Windows, Mac, iPhone and Android?
Yes. It runs in any modern browser on Windows, Mac, Linux, iPhone and Android with nothing to install and no account needed. Chrome, Edge, Firefox and Safari are all supported.