Free video and audio tools

Extract audio, convert iPhone videos and shrink clips to fit an email or upload limit.

The work runs on our servers, so a long video does not tie up your phone or laptop. Leave the page open until the download appears.

If a video will not play, convert it to MP4. If it is too big to send, compress it. If you only want the sound, extract the MP3.

Video and audio tools · 3 tools

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MOV to MP4 Your iPhone video plays fine on the phone, then won't open on a Windows PC

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MP4 to MP3 Only want the sound from a video, like a lecture for the bus or a song from a…

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Compress Video Video too big to email, or WhatsApp won't send it?

Choosing the right video or audio tool

MP4 to MP3 pulls the audio out of a video — a lecture, a song or a voice message recorded on camera. MOV to MP4 converts iPhone and QuickTime videos into a format that plays on Windows, Android and every website. Compress Video shrinks a clip to fit an email, WhatsApp, Discord or upload limit, and can aim for an exact size in megabytes.

They take the common video formats — MP4, MOV, MKV and AVI, with WebM in place of MP4 for MOV to MP4 — and run on our servers, so a long video does not tie up your phone or laptop.

A quick way to choose: if the problem is that a video will not play, convert it to MP4; if it is too big to send, compress it; if you only want the sound, extract the MP3.

Compressing a video is always a trade between size and picture quality, and the biggest savings come from lowering the resolution: a phone video recorded in 4K is far larger than anything a chat app will show. For a clip that only needs to be watched on a phone, 720p is usually plenty. Keep your original file, because a compressed copy cannot be turned back into the full-quality one.

Good to know

Extracting audio does not touch the video you started with. The MP3 you download is a new file, small enough to send as a voice note, add to a podcast editor or keep in a music library. MP3 plays on practically every phone, car stereo and computer, which is why it is the format these tools produce.

Converting MOV to MP4 changes the container the video is stored in, so the clip looks the same while far more devices and websites can open it. This is the usual fix when a video sent from an iPhone will not play on Windows or will not upload to a site that expects MP4.

Every upload or messaging limit is a limit on file size, not length, so a short clip can still be too big if it was recorded at high resolution. When Compress Video asks for a target size, give it a little less than the limit you are aiming for, such as 24 MB for a 25 MB cap, so the finished file fits with room to spare.

Long recordings take longer to process because every frame has to be read and written again. Leave the page open until the download appears. The work runs on our servers, so a phone can be set down and a laptop can keep running other programs while it finishes.