I got tired of uploading sensitive images to random websites, so I built a local-only blur tool

A few days ago, I was preparing a technical blog post. I needed to blur a few email addresses and a face in a screenshot before publishing. I did what most developers would do. I searched for a free online image blur tool, clicked the first result, and uploaded my image. Then I stopped. Where was that image going? Was it being stored on a server somewhere? For how long? Who else had access to it? The website had no privacy policy, no mention of data retention, and no reassurance that my file would be deleted after processing. That feeling of unease stuck with me. So I decided to build something better. The result is Blur-image.org, a browser-based image blur tool that processes everything locally on your machine. No uploads, no servers, no third parties ever seeing your data. How it works under the hood Everything runs directly in the browser using standard web technologies. When you open the tool, all the heavy lifting happens on your device via JavaScript, Canvas API, and local proce