Video Compressor
Reduce video size with practical quality and resolution controls, without uploading.
The video never leaves your device. Browser encoding can be slower than a cloud server, especially on mobile.
More Video Tools
How to use Video Compressor
- 1Choose a video under the recommended browser limit.
- 2Choose quality and optional maximum width.
- 3Select Compress Video and wait for processing.
- 4Preview the compressed video and compare file sizes before downloading.
Control the Real Drivers of Video Size
Video size depends mostly on codec quality, resolution and duration. Choose a quality target and optionally cap wide video dimensions. Audio is encoded efficiently and the result is a broadly compatible MP4.
Frequently asked questions
How does video compression work?
The browser re-encodes video with H.264 using a quality target and optional resolution limit.
Which quality should I choose?
Balanced works for most videos. Smaller file uses stronger compression; higher quality keeps more detail.
Why can compression be slow?
Video encoding is computationally heavy and runs on your own device. Short clips work best.
Are videos uploaded?
No. ffmpeg.wasm performs the complete conversion in your browser.