Video Compressor
Optimize and shrink video files instantly inside your browser. Select custom bitrates and resolution scales. 100% private.
Need smaller videos? Zoomix records optimized, share-ready videos from the start.
Zoomix adds professional auto zoom, smooth layout transitions, custom canvas backgrounds, and cursor tracking effects to your recordings instantly.
Professional Grade Tool Specs
Equipped with state-of-the-art client-side media pipelines.
100% In-Browser Privacy
Your video files are never uploaded to any remote server. Your content remains strictly inside your local sandbox.
Target Bitrate Customization
Directly adjust the video encoding bitrate from 200 kbps up to 5 Mbps to target precise file sizes.
Resolution Scale Down
Scale original resolutions down to 75%, 50%, or 25% to dramatically reduce processing time and sizes.
Mute Audio Track Toggle
Easily strip all audio channels entirely to achieve even leaner, smaller silent clips.
Real-time Transcode Progress
Track compression progress frame-by-frame with dynamic percentage meters and estimated compression sizes.
No Heavy Downloads
Runs instantly using browser-native APIs without downloading heavy 30MB+ WebAssembly files.
How to Use the Video Compressor
Upload Video
Select or drop any MP4, WebM, or Ogg video file from your computer.
Adjust Settings
Select resolution scaling, target encoding bitrate, and choose whether to retain audio tracks.
Transcode & Save
Click 'Compress Video' to let the in-browser encoder run, then download the compressed clip.
Frequently Asked Questions
Frequently asked questions about Zoomix's browser video compressor.
Our compressor runs a client-side transcoding pipeline. It renders your video frames onto a canvas at your chosen scale and pipes the canvas frames along with audio tracks into a browser `MediaRecorder` stream initialized with your target bitrates. Everything runs locally on your device.
Because it uses standard browser canvas stream recording, the transcoding process happens in real-time. This guarantees 100% privacy, zero data uploads, and high compatibility without demanding hundreds of megabytes of heavy WebAssembly (FFmpeg) downloads.
Yes. The compressor automatically selects the best format supported by your browser (usually WebM or MP4). WebM offers excellent modern compression ratios suitable for web pages, whereas MP4 provides maximum device compatibility.
Other Free Creator Utilities
Webcam Tester
Verify camera captures, frame rates, aspect resolutions, and mic level bars.
Screen Resolution Checker
Verify display dimensions, pixel densities (DPR), and orientation aspect ratios.
Microphone Tester
Inspect mic frequencies, audio levels with oscilloscope, and listen to voice playbacks.
Video File Size Calculator
Calculate file encoding sizes based on duration, resolution, quality profiles, and codecs.