Video Converters
Every video tool here runs entirely in your browser using WebAssembly. Drop a file, pick a format, download the result — nothing is ever uploaded.
All video converters
Which format should I use?
MP4 is the universal container — every player, every platform, every device understands it. MOV is Apple's equivalent and looks identical on Mac but gets rejected by Windows tools and social uploaders. MKV is a flexible container popular with desktop rippers but poorly supported on the web and in most editors. GIF is an ancient format kept alive for looping animations on Twitter, Slack, and chat apps — large files for what they deliver, which is why switching to MP4 for anything longer than a few seconds is almost always the right call. For getting video onto the web or into any editor, MP4 is the safe default.
| Format | Best for | File size | Universal support |
|---|---|---|---|
| MP4 | Web, social, streaming, editors | Small (H.264/H.265) | Yes |
| MOV | Apple workflows, ProRes masters | Large if ProRes, small if H.264 | Apple ecosystem |
| MKV | Archive, desktop rips, multi-track | Variable | Desktop players only |
| GIF | Looping animations, reactions | Very large per second | Yes — everywhere |
Frequently asked questions
Why does my MOV get rejected on Windows or social sites?
MOV is Apple's container. Many Windows tools, older email clients, and social uploaders only accept MP4. Converting to MP4 with H.264 video and AAC audio is the most compatible path — same quality, different wrapper.
How fast is in-browser video conversion?
Slower than a desktop app — we're running ffmpeg inside WebAssembly. Expect 1–3× the video's length for re-encoding (a 1-minute clip takes 1–3 minutes). Extracting audio (MP4 → MP3) is much faster because video frames don't need to be touched.
Are my videos uploaded anywhere?
No. Every converter here runs in your browser. Files never leave your device, which is why this is safe for unreleased marketing cuts, NDA-bound client work, and confidential footage.
Is there a file size limit?
Practical limit is around 500 MB — above that, browser memory constraints start causing failures. For multi-GB files, a desktop ffmpeg install is the right tool.
Can I batch-convert multiple videos?
Yes. Drop multiple files on any converter; they process sequentially. Because video conversion is CPU-intensive, batches of more than 3–4 files can take a long time — consider converting overnight if you have many.
What codec does the output use?
MP4 outputs use H.264 video + AAC audio — the universally compatible combination. MP3 audio outputs use 192 kbps CBR at 44.1 kHz, which is transparent for most listening.