Online Video Converter
Free online video converter. Convert video and audio files directly in your browser using WebAssembly. No upload, no server — 100% client-side.
Conversion logs
—
Supported formats
FAQ
Is my file uploaded to a server?
No. Everything runs locally via FFmpeg WebAssembly.
Why is the first conversion slow?
It downloads the FFmpeg core (~30 MB) once. After that it's cached.
Max file size?
No hard limit. Files over 250 MB may be slow; over 700 MB may freeze the tab.
Can I convert MP4 to MP3?
Yes. Choose "MP3 (audio only)" and click Convert.
Can I make a GIF from a video?
Yes. Select "GIF (animated)" as output format.
Related tools
Edit video on a multi-track timeline in your browser: import clips, add text and effects, and export a finished video.
Trim, split, and arrange video, images, text, audio, transitions, and filters on a timeline, then export up to 4K — all in your browser.
Animate images, video clips, and text overlays with keyframes directly in your browser and export as a video.
Free online audio converter. Convert audio files in your browser using WebAssembly.
Arrange, trim, and mix multiple audio tracks on a canvas waveform timeline with per-track mute/solo, volume, pan, zoom, and WAV export.
Edit, trim, and apply effects to audio directly in your browser with a free, open-source waveform editor.