About ZeroCutLab
Who's Behind It
ZeroCutLab is built and maintained by a single independent developer — there's no company or team behind it, just one person writing and testing every tool. You can reach me directly at eymenefealtun@hotmail.com or through the Contact page.
Why I Built It
Most online media tools work the same way: you upload your file to a server, wait for it to be processed, and download the result — handing your file to a stranger's server in the process. For something as simple as trimming a clip or cropping a photo, that always felt like overkill. ZeroCutLab exists to do the same job without the round trip: your file never leaves your device.
How It Works
Every tool on ZeroCutLab runs entirely in your web browser using standard, built-in browser technology — no plugins, no installs. Audio Cutter and Audio Merger use the Web Audio API to decode and re-encode sound. Video Cutter and GIF Maker use FFmpeg compiled to WebAssembly (FFmpeg.wasm) to process video directly on your device's processor. Image Cropper uses the browser's native Canvas API. In every case, the file you open is read into your browser's memory, processed there, and handed back to you as a download — it's never transmitted anywhere.
What's Available Today
- Audio Cutter — trim MP3, WAV, OGG, and AAC files on a waveform, export as WAV, MP3, OGG, AAC, or FLAC.
- Audio Merger — combine multiple audio files into one, reorder tracks, add gaps between clips.
- Video Cutter — trim MP4, WebM, and MOV videos on a timeline, export as MP4.
- GIF Maker — turn a video clip into a palette-optimized animated GIF.
- Image Cropper — crop and resize JPG, PNG, WebP, and GIF images.
Free, Supported by Ads
Because there's no server doing the heavy lifting, ZeroCutLab can be offered for free with no sign-up. The Site is supported by advertising; see our Privacy Policy for details on how ads and cookies are handled.
Open Source Acknowledgements
ZeroCutLab is built on top of several open-source projects, loaded directly from their official CDNs and run entirely on your device:
- FFmpeg.wasm — a WebAssembly build of FFmpeg, powering Video Cutter, GIF Maker, and part of Audio Cutter/Merger. FFmpeg is licensed under the LGPL v2.1+; this build includes libx264 for precise video re-encoding, which makes the compiled binary GPL v2+ as a whole. Corresponding source is available from the FFmpeg.wasm project linked above.
- lamejs — a JavaScript port of the LAME MP3 encoder, licensed under the LGPL, used for MP3 export in Audio Cutter and Audio Merger.
- Tailwind CSS (MIT License) and Lucide Icons (ISC License), used throughout the interface.
I'm grateful to these projects and their maintainers — ZeroCutLab wouldn't be possible without them.