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Media compress

Compress

Trade a bit of quality for a much smaller file. Tunable CRF and resolution cap.

Runs in your browser. Media is processed with FFmpeg WASM in this tab — nothing is uploaded to BrowserSpaces. The engine preloads in the background while you set up the tool.

CRF control

Higher = smaller.

Scale down

Cap width (e.g. 1280).

Fast preset

veryfast for browser CPU.

Use the tool

Re-encodes with libx264 — not lossless. Higher CRF = smaller file.

How it works

How compression works

FFmpeg re-encodes with libx264 (or available encoder), CRF, and an optional scale filter. Results vary by source.

Three steps

  1. 1

    Upload video

    Prefer under soft size limits.

  2. 2

    Pick CRF / width

    Balance size vs quality.

  3. 3

    Download

    Compare file sizes yourself.