Free Video Compressor

What is a video compressor?

A video compressor makes a video file smaller by spending fewer bits on each second, and sometimes fewer pixels on each frame.

Video encoders are good at spending bits where you'd notice. So a video can often lose half its size or more and still look the same on a phone.

How much smaller each setting gets

Here's a 10-second 1080p clip, 7.9 MB, compressed with each setting on September 30, 2026. The score is how alike it looks to the original, where 1 is identical:

The original was saved at a very high quality, so it had room to shrink. A video that's already compressed shrinks less.

Fit an email or an upload limit

Pick Fit a size and type the size in MB. The compressor works out the bitrate from the video's length, so the file comes in just under it.

Gmail's limit is 25 MB for a personal account, and bigger files go through Google Drive. For a long video, a smaller size in pixels keeps it sharp at that limit.

Smaller in pixels

A 4K video is four times the pixels of 1080p. On a phone screen, 1080p or 720p looks the same and is a fraction of the size.

Pick a size under Size: 1080p, 720p or 480p. The shape stays the same, so nothing is cropped.

Nothing is uploaded

Most online converters send your video to their server and send back the result. This one converts in your browser, with the video encoders built into it.

So your video never leaves your computer, there's no upload to wait for, and there's no size limit but your computer's memory.

What it can't convert

Some files don't work in a browser:

• Old formats – AVI, WMV and FLV aren't read. MP4, MOV, MKV, WebM, Ogg and GIF are.
• Some sound codecs – a camera's AC-3 or DTS sound can't be decoded in most browsers.
• Copy-protected videos – videos from streaming apps are locked.
• Very long 4K videos – they work, but a phone may run out of memory.

For those, convert on a computer rather than a phone.

Who is the video compressor for?

It's for anyone whose video is too big to send:

• Video resizer – creators posting one video to TikTok, Reels and YouTube
• Video caption generator – anyone adding captions before posting
• Screen recorder – people recording tutorials and demos
• MP4 to MP3 converter – podcasters turning video into an audio feed

Teachers and support teams use it to email a recording.

More free video tools

Here are my other video converters, and two for what comes next:

• Video converter – any video to MP4, WebM, MOV or GIF
• MOV to MP4 – iPhone and Mac videos that play everywhere
• WebM to MP4 – browser recordings that play everywhere
• MKV to MP4 – OBS recordings, instantly
• Video to GIF – a short loop for chats and slides
• GIF to MP4 – a GIF as a video, a fraction of the size
• Video resizer – any video in TikTok, Reels or YouTube's size
• MP4 to MP3 converter – just a video's sound

They're all free, in your browser, with no watermark.