What does the CRF slider control?

CRF (Constant Rate Factor) controls the quality-to-size trade-off. Lower values mean better quality and larger files; higher values shrink the file more aggressively. 26–30 is a good balance for sharing.

Will the output always be MP4?

Yes, compression re-encodes to MP4 (H.264 video, AAC audio) for maximum compatibility across devices and platforms.

How much smaller will my file be?

It depends on the source, but a typical phone-recorded video shrinks by 40–70% at the default setting with little visible quality loss.

Free tool, no signup

Video Compressor

Compress videos to a smaller size without losing quality.

Drop a video here, or click to browse

MP4 · WEBM · MOV · AVI · MKV, up to 100 MB

How it works

Done In 3 Simple Steps.

Upload your video

Drag an MP4, WEBM, MOV, AVI, or MKV file into the box, or click to browse. Up to 100 MB.

Adjust the settings

Pick the output format, compression level, or frame rate you want.

Process & download

Hit the button, your processed file is ready to download in seconds.

FAQ

Frequently Asked Questions

Still have questions? View the full FAQ or Contact.

Try Another Tool.

Video Converter

Convert videos between popular formats.

Video to MP3

Extract audio from any video as MP3.

GIF Maker

Turn clips and images into shareable GIFs.

MP4 to GIF

Convert MP4 videos into looping GIFs.