Compress Video Online Free

Features

• Compress videos by up to 90% with adjustable quality presets
• Three presets: Small (maximum compression), Balanced (recommended), and High Quality
• Optional resolution downscale to 1080p, 720p, or 480p for extra savings
• Supports all major formats: MP4, MOV, MKV, AVI, WebM
• 100% browser-based — your video never leaves your device
• No watermark, no sign-up, no file size limits

Frequently Asked Questions

How do I compress a video online for free?

Upload your video, pick a quality preset (Balanced is a good starting point), and click Process. The compression runs entirely in your browser — no server upload, no account required.

How much can I reduce video file size?

Typically 50-90% depending on the original encoding and your chosen preset. The Small preset with resolution downscaling gives maximum compression. Already-optimized files see smaller reductions.

Will compressing my video reduce quality?

Some quality loss is inherent in compression, but at the Balanced and High Quality presets it is barely noticeable. The Small preset prioritizes file size, so quality drops more but remains acceptable for web sharing.

What video formats can I compress?

This tool accepts MP4, MOV, MKV, AVI, and WebM files. The output is always MP4 with H.264 encoding, which is the most universally compatible format.

Is there a file size limit?

No. Since processing happens locally in your browser using WebAssembly, there are no upload limits. Very large files may take longer to process depending on your device.