Video & audio tools.
Shrink and convert video or audio — right in your browser.
Video work in a browser used to mean uploading gigabytes to someone’s server and waiting in line. These pages use your device’s own hardware codecs through WebCodecs instead — compression and conversion at native speed, with the file never leaving your machine. Audio rides the same pipeline, from MP3 encodes to lossless FLAC.
Compress & core tools · 3
Convert · 25
- Convert MOV to MP4
- Convert WebM to MP4
- Convert MKV to MP4
- Convert MP4 to WebM
- Convert video to GIF
- Convert MP4 to GIF
- Convert GIF to MP4
- Convert MP4 to MP3
- Convert WAV to MP3
- Convert M4A to MP3
- Convert FLAC to MP3
- Convert WAV to FLAC
- Convert OPUS to MP3
- Convert OGG to MP3
- Convert AAC to MP3
- Convert MP3 to WAV
- Convert MP4 to WAV
- Convert WebM to MP3
- Convert MOV to MP3
- Convert MP3 to M4A
- Convert WAV to M4A
- Convert MP3 to OGG
- Convert WAV to Opus
- Convert VTT to SRT
- Convert ASS to SRT
How it works
- Choose a tool — compress a video, convert a format or pull the audio out.
- Drop the file; your device’s own hardware decoder does the work.
- Download the result — no upload, no queue, no watermark.
Frequently asked questions
How can a browser compress video this fast?
The same way native apps do — through your device’s hardware encoder, exposed to the page by WebCodecs. There is no upload and no server queue, which is where web tools usually lose their time.
Video or audio page — which do I need?
If the picture matters, a video tool; if only the sound does, an extractor like MP4 to MP3 gives you a small audio file and discards the rest. Subtitle converters handle the text side.
Is there a length or size limit?
No hard limit — processing is bounded by your device’s memory and speed, not by an upload cap. Hour-long recordings are routine.
Do my videos get uploaded?
Never — decoding, re-encoding and muxing all happen locally. A video is the largest, most personal file most people handle; that is exactly why this site processes it on your device.