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Shrink MP4, MOV, WebM and more with platform-ready presets for WeChat, TikTok, Instagram Reels, YouTube & Bilibili. Runs entirely in your browser via ffmpeg.wasm — no uploads, no watermark.
Drag and drop a video file or click to browse. MP4, MOV, WebM, AVI, and MKV are supported.
Choose a platform preset (WeChat, TikTok, YouTube…) or tune the CRF quality slider manually.
Click Compress. Your browser re-encodes the file with ffmpeg.wasm, then offers a direct download.
No. We never add watermarks, logos, or metadata. Your compressed video keeps the same content as the original.
It depends on the source bitrate. Typical savings are 40–80% for phone recordings and screen captures. Platform presets target file sizes that are accepted on each platform.
No. All encoding runs locally in your browser through ffmpeg.wasm. Your file never leaves your device.
WeChat Moments (25 MB), WeChat Video Account, TikTok / Douyin, Instagram Reels, YouTube, and Bilibili.
ffmpeg.wasm is slower than a native app. Expect roughly 0.3–1× of the video's duration on a modern laptop. Longer clips take longer.