🎬 Video Compressor

Compress Any Video
Up to 90% Smaller

Reduce MP4, WebM and MOV file sizes with full control over quality, resolution, bitrate and FPS. Powered by FFmpeg — runs entirely in your browser.

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Drop your video here

MP4, WebM, MOV, AVI, MKV, OGV supported · Any size

Browse File

Loading FFmpeg engine… (~30 MB, one-time download)

Preview

Original
Initializing…

✅ Compression complete!

–0%

Why Use Our Video Compressor?

Professional FFmpeg compression, running entirely in your browser — private and instant.

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100% Private

Powered by FFmpeg.wasm — all processing happens locally in your browser. Your video is never uploaded anywhere.

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Up to 90% Smaller

Smart H.264/VP9 compression can reduce a 100 MB video to under 10 MB with minimal visible quality loss.

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Full Control

Adjust CRF quality, resolution, FPS, video and audio bitrate, encoding speed, and trim the video — all in one place.

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Quick Presets

Choose from Web, Balanced, Small, Tiny and Lossless presets for one-click optimal compression settings.

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Many Formats

Input supports MP4, WebM, MOV, AVI, MKV, OGV. Output to MP4 (H.264), WebM (VP9) or MOV for Apple devices.

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No Limits, No Cost

No file size limits. No account. No watermarks. No subscriptions. Completely free forever.

How It Works

Compress Video in 3 Easy Steps

1

Upload Your Video

Drag and drop any video file or click to browse. Supports MP4, MOV, WebM, AVI, MKV and more.

2

Choose a Preset or Customize

Pick a quick preset like "Small" or "Web", or fine-tune quality, resolution, FPS and bitrate manually.

3

Compress & Download

Click "Compress Video" and wait for FFmpeg to process. Then preview and download your smaller video.

4

Compare Results

Side-by-side preview lets you compare the original and compressed video before downloading.

Frequently Asked Questions

Is my video uploaded to a server?
No. The tool uses FFmpeg.wasm, which runs the full FFmpeg engine in your browser via WebAssembly. Your video file never leaves your device — complete privacy guaranteed.
What does CRF mean?
CRF (Constant Rate Factor) controls quality vs file size. A value of 18 gives near-lossless quality. Values of 23–28 are the sweet spot for most use cases. Values of 35+ give very small files with noticeable quality loss. Lower = better quality, larger file.
How much can I compress a video?
It depends on the source. A typical 1080p MP4 recorded on a smartphone can often be compressed 50–90% with minimal visible quality loss. Lowering resolution from 1080p to 720p alone reduces file size by roughly 50%.
Why does compression take a while?
FFmpeg.wasm runs in your browser using WebAssembly, which is significantly slower than native FFmpeg (roughly 5–20× slower). A 5-minute video may take 2–10 minutes depending on settings and your device CPU. Using "Ultrafast" encoding speed will be much faster, at a small file-size trade-off.
What is Two-Pass encoding?
Two-pass encoding runs FFmpeg twice — the first pass analyzes the video content, and the second pass uses that data to allocate bitrate more efficiently. This produces better quality at the same file size, but roughly doubles encoding time.
Which output format should I choose?
MP4 (H.264) works everywhere — phones, browsers, social media, TVs. WebM (VP9) is best for websites and Chrome/Firefox and achieves slightly better compression. MOV is ideal if you're editing in Final Cut Pro or sending to iPhone/Mac users.
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