Resize, compress, crop, reverse and convert GIFs and MP4 clips — entirely in your browser. No uploads, no signup, no watermark. Your files never leave your device.
Most online GIF tools upload your file to a server, queue it, and delete it (you hope) after some interval. OhMyGIF skips all of that — every byte stays in your tab. That means there is no upload time, no queue, no privacy concern, and no daily quota. Want to process 100 GIFs in a row? Go ahead.
Each tool is a small client-side script. GIF decoding uses gifuct-js, re-encoding uses gif.js (in a Web Worker), and the GIF↔MP4 conversions use ffmpeg.wasm. Files up to 50 MB work comfortably on a modern laptop.