Free Online Video Compressor: Reduce Video Size Without Losing Quality

Why compress a video?

Phone cameras record video at very high bitrates. One minute of 4K iPhone video can be 350 MB or more, and even 1080p clips quickly reach hundreds of megabytes. That is far more than most places allow:

A video compressor re-encodes the video more efficiently, so the file becomes much smaller while it still looks good on a phone, laptop or TV. Limits change from time to time, so check the current limit of the service you are using.

How this free video compressor works

Most online video compressors upload your file to their servers, which is slow for big videos and not great for privacy. This one is different: it uses the video encoder built into your own browser, so your video never leaves your device. There is no upload wait, no file-size cap set by a server, no watermark and no account.

• Compression levels: Balanced for everyday sharing, Strong for the smallest file, Light when quality matters most.
• Target file size: type a size such as 25 MB, and the compressor calculates the right bitrate for your video's length.
• Resolution: reduce 4K or 1080p to 720p or 480p for a much smaller file.
• MP4 or WebM output: MP4 with H.264 plays everywhere; WebM is great for websites.
• Remove audio: useful for silent product clips, website backgrounds and screen recordings.

Which settings should I use?

Tip: Lowering the resolution saves more space than any other setting. A 720p video has less than half the pixels of a 1080p video, so the compressor can give each pixel more detail at the same file size. On a phone screen the difference is hard to see.

How much smaller will my video get?

It depends on how the video was recorded. Phone and camera recordings usually shrink by 60 to 90 percent, because cameras save video with a lot of extra data to keep encoding fast. Videos that were already compressed, such as clips downloaded from social media, shrink less. If the compressor cannot make your file smaller with the chosen settings, it keeps your original and tells you, so you never end up with a bigger file.

Does compressing a video reduce quality?

Compression removes detail that is hard to notice, so with the Balanced or Light setting most people see no difference on normal screens. Strong compression and very small target sizes can make fast movement look a little blurry or blocky. If that happens, choose a lower resolution instead of a smaller target size: a sharp 720p video looks better than a blocky 1080p one.

Speed and large files

Because the work happens on your device, speed depends on your computer or phone. Modern computers often compress a one-minute 1080p clip in well under a minute. Keep the tab open while it works. Very long or 4K videos need a lot of memory, so on phones it is best to compress videos under about 1 GB.

Supported formats

You can add MP4, MOV (including iPhone videos), WebM, MKV and M4V files. The output is MP4 or WebM. A few rare formats, or videos using codecs your browser cannot decode, may not work; the tool will tell you if that happens. Want only the soundtrack? Use our video to audio converter to save it as MP3. For photos, use our image compressor or the HEIC to JPG converter for iPhone pictures, and to share documents, combine them with Merge PDF.

Last updated November 2, 2026.