Free Online Video Compressor
Shrink MP4 & WebM videos to a custom MB size or choose instant presets silently without losing audio quality or uploading to external servers.
Select Video File or Drag & Drop
Supports MP4, WebM, MOV & AVI β’ Silent & 100% Secure
Video Details
Dynamic bitrate scaling calculates target specs based on video length and audio bitrate.
Processing in silent background mode. Please keep this tab open.
How to Reduce Video Size Online without Losing Quality
Compressing video files to fit email attachment limits, Discord uploads (8MB limit), or web publishing is simple with our free online video reducer. Follow these steps:
- Upload Video File: Click on the upload zone or drag and drop your MP4, WebM, or MOV video into the converter.
- Choose Target Compression: Select from preset levels (Extreme, High, Medium, Low) or specify your target size directly in Megabytes (e.g., 8 MB, 25 MB).
- Click Process Video: The tool encodes the frames locally using HTML5 Media Canvas pipelines and preserves original audio tracks.
- Download Instantly: Save your newly compressed video without watermarks.
Understanding Video Bitrates & Audio Retention
Traditional online video compressors upload files to remote servers, exposing private videos to privacy leaks. Our browser-native encoder leverages the W3C MediaRecorder Standards and MDN Web Codecs Specifications.
| Preset Profile | Scale Ratio | Video Bitrate | Audio Retention |
|---|---|---|---|
| Extreme | 35% Scale | ~400 Kbps | 100% Stereo Audio |
| High (Recommended) | 50% Scale | ~1000 Kbps | 100% Stereo Audio |
| Medium | 70% Scale | ~2000 Kbps | 100% Stereo Audio |
Frequently Asked Questions
Why does the compressed video have audio issues in some converters? βΌ
Many basic converters forget to capture Web Audio Context streams during dynamic canvas rendering. Our compressor uses direct media stream multiplexing, capturing both video frames and stereo Opus/AAC audio tracks simultaneously to ensure complete audio synchronization.
Is there a file size limit for video compression? βΌ
Since all compression happens offline in your web browser RAM, there are no strict file size limits! You can compress large 1GB+ MP4 files easily depending on your computer's browser memory.