The economics of "free image converter" sites are wild they need you to upload, see ads, hit a watermark or quota wall, then upgrade. The Canvas API has been able to do this work locally since Chrome 5.
I built Devool-pro to test the thesis: every image/video tool a developer needs, in one tab, no upload, no signup, no watermark. 10 tools in so far. It runs entirely in your browser.
Genuinely curious is there a category where you think browser-only WON'T work? Where a server-side approach is fundamentally needed?
Devool-pro is a free toolkit of 10 image & video tools developers actually use — convert (WebP/AVIF/JPG/PNG), compress, crop with drag handles, beautify with macOS/browser frames, base64 encode, extract color palettes (median-cut), generate QR codes + full favicon kits, and re-encode video. Everything runs locally on the Canvas + MediaRecorder APIs. Zero upload, zero signup, zero tracking — your files never leave your tab. One URL replaces 8 single-purpose sites.
