15:I[981,["658","static/chunks/658-a698693f56d0116a.js","183","static/chunks/183-6beeeb801c274aaa.js","474","static/chunks/app/%5Btype%5D/layout-631c4730b83c8223.js"],"Posts"] 16:T52c,Hi HN,

I built BlurImageOnline.com because I often found myself needing to quickly redact sensitive information (like API keys, emails, or faces) from screenshots before sharing them.

Opening Photoshop felt like overkill for such a simple task, and I was hesitant to use existing online tools because I didn't want to upload my private images to a random server.

So, I built a privacy-first solution.

Key Features:

100% Client-Side: All image processing happens directly in your browser using (HTML5 Canvas / WebAssembly). Your images are never uploaded to my servers. Zero Friction: No signup, no login, and no watermarks. Simple UI: Just drag, select the area, and download. How it works: The tool loads the image into a canvas element and applies a box blur algorithm only to the selected coordinates. Since it runs locally, it’s fast and works even with large files (limited only by your browser's memory).

Future Plans: I'm planning to add (e.g., auto-face detection / mosaic pixelation style / mobile optimization).

I’d love to get your feedback on the UX and if you encounter any bugs with specific image formats.

Check it out here: https://www.blurimageonline.com/

Thanks!17:T4ac,Hi HN. I built Dots, a simple iOS journal for tracking daily events and noticing patterns over time.

I started this project to better understand frequent migraines. I was having clusters of debilitating days. Getting in to see a doctor was taking months.

I wanted a lightweight way to log symptoms, sleep, stress, caffeine, and everyday habits without the overhead of a full habit tracker. Most tools I tried felt complex for what should be simple: did this happen today, and how often?

The core interaction is deliberately si

Show HN: Free tool to blur images instantly without signup or watermarks

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