AMPDF

Compress Video

Make a video file smaller for email, messaging or uploads. Pick a quality level and a maximum resolution and the video is re-encoded as an H.264 MP4 in your browser.

  • Runs entirely in your browser
  • No sign-up, no watermark
  • Free and unlimited
🔒 Your file stays on your device

Need to scan documents from your phone?

VideoKit

Compress • Trim • Convert • GIF

How to use Compress Video

  1. 1

    Drop a file onto Compress Video, or click to choose from your device.

  2. 2

    Set any options for how the file should be processed.

  3. 3

    Press the action button — everything runs in your browser.

  4. 4

    Download the result. Nothing is uploaded or stored.

What you get

  • Three quality levels
  • Optional 1080p / 720p / 480p cap
  • Never upscales small videos
  • Runs on your device

What happens to your files

This tool runs entirely in your browser. The file you choose is read into memory, processed on your device, and offered back as a download. Nothing is uploaded and nothing is kept once you leave the page.

There is no account, no email, no watermark and no daily limit. Come back whenever you need it.

Frequently asked questions

Why didn't my video get smaller?
Videos that were already exported with efficient settings have little left to remove. Try the Smallest file quality or a lower maximum resolution.
What format do I get back?
An MP4 with H.264 video and AAC audio, which plays almost everywhere.
How large a video can I use?
Up to 300 MB. The video is processed in your browser's memory, so very long or very large files can run out of it. For those, the free VideoKit mobile app processes videos natively on your phone.
Is my video uploaded anywhere?
No. FFmpeg runs inside your browser tab as WebAssembly, so the video never leaves your device. The first run downloads the video engine (about 30 MB) from this site once and reuses it afterwards.

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