Video Compressor
Compress any video file directly in your browser — fast, private, and free. Uses your browser's native hardware-accelerated codec. No downloads, no uploads, no waiting.
Compression Result
FAQ
Is my video uploaded to a server?
No. This tool uses your browser's built-in MediaRecorder API and WebCodecs API to compress video entirely within your browser tab. Your file never leaves your device.
Why is this faster than other online video compressors?
Most browser-based video tools use FFmpeg compiled to WebAssembly, which requires downloading a ~25 MB engine before processing and runs slower because it can't access hardware acceleration. This tool uses your browser's native codec APIs that directly leverage your device's GPU or hardware video encoder — resulting in speeds 5–20× faster.
What is the Bitrate setting?
Bitrate controls how much data is used per second of video. Higher bitrate = better quality + larger file. Lower bitrate = smaller file + possible quality loss. For typical web video, 1–3 Mbps is a good range. For high-motion content (sports, gaming), use 3–5 Mbps.
What output format does this produce?
The output format depends on your browser's supported codecs. Modern Chrome and Edge produce WebM (VP8/VP9) or MP4 (H.264/AVC). The tool auto-selects the best available format for your browser and labels the download accordingly.
What video formats can I upload?
You can upload MP4, WebM, MOV, MKV, AVI, and M4V files. The browser decodes the input regardless of container format, then re-encodes it using the best available codec.
Why did the compressed file come out larger?
If the original video was already well-compressed (e.g., a low-bitrate MP4), re-encoding it may increase the file size. In this case, lower the bitrate slider further or choose a smaller resolution. The tool will always warn you and still let you download the result.
Is there a file size limit?
No hard limit is enforced, but very large files (over 500 MB) may be slow or exceed browser memory on some devices. For best performance, process files under 500 MB, or reduce the resolution to 720p or lower.