Video Compressor — Compress Video Online Free (MP4, MOV)
Compress video files in your browser with FFmpeg — no upload, no sign-up. Shrink MP4, MOV, MKV, and WebM by up to 80% and target Discord’s 10MB or 25MB limit.
Drop your video here, or click to browse
Files are processed in your browser — nothing is uploaded.
What is a video compressor?
What is it
A video compressor reduces the size of a video file by re-encoding it at a lower bitrate while keeping it looking smooth. filecompressor.app uses FFmpeg compiled to WebAssembly, so the entire process runs in your browser — your video never gets uploaded to a server.
This makes it private, free, and ideal for shrinking videos to fit Discord’s 10MB limit, email attachments, or website uploads. You can target a specific size or let the compressor pick a balanced setting that keeps quality high.
How to compress a video
How to use
Compressing a video takes a few steps and runs entirely on your device:
- 1
Drop your MP4, MOV, MKV, AVI, or WebM file into the dropzone above, or click to browse.
- 2
The compressor re-encodes the video with FFmpeg.wasm at a balanced CRF, or targets a specific size like 10MB for Discord. You will see the new size and percentage saved.
- 3
Click Download to save the smaller MP4. The output is H.264 video with AAC audio, compatible with almost every player and platform.
Why use this video compressor?
Why use it
100% private — videos are processed in your browser and never uploaded to any server.
Free with no sign-up, no watermarks, and no limits on how many videos you compress.
Targets Discord’s 10MB and 25MB limits, plus email attachment caps.
Up to 80% size reduction with quality you barely notice.
Supports MP4, MOV, MKV, AVI, and WebM, outputting a universally compatible MP4.
FAQ
Common questions about this compression tool.
Frequently Asked Questions
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