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SelfKit

Your files stay on your device

Compress videoexactly to the platform limit

No uploads, no registration, no watermarks. The video is processed in your browser and fits perfectly — for Discord, email, WhatsApp and more.

Platform
Plan
20 MB

Up to 20 MB

Optimal parameters are calculated automatically

Usually takes 10 – 60 seconds, depending on the file and the device

Supported platforms

Popular services and messengers with their file size limits.

View all platforms

How it works

  1. 1

    Choose a video

    Drag a file in or pick it on your device. MP4, MOV, WebM, MKV and more.

  2. 2

    Pick where it goes

    Discord, email, a messenger or your own size. Settings are chosen automatically, and you can change them.

  3. 3

    Download the result

    The video is compressed right in your browser. Ready to send.

Don’t take our word for it — check

Open this page, turn off the internet (airplane mode) and compress a video. It still works, because the processing happens on your device, not on our server.

  1. Open the page
  2. Turn off the internet
  3. Compress a video

The page needs to load once with internet first.

File size limits

The limits we compress to. Checked regularly.

All platforms and plans →
PlatformPlanLimit
DiscordFree20 MB
DiscordNitro Basic50 MB
DiscordNitro500 MB
WhatsAppAs video16 MB
WhatsAppAs file2 GB
TelegramFree2 GB
TelegramPremium4 GB
GmailAll accounts25 MB
OutlookAll accounts20 MB
SlackAll accounts1 GB
GitHubFree10 MB
GitHubPaid plan100 MB

Frequently asked questions

Are my videos uploaded to your server?

No. The video is read and compressed by your browser on your device. We have no server that receives files, so we cannot see them.

Why doesn’t my video fit even after compression?

Every second of video needs some data. A long video with a small limit leaves too little per second. Trim the video, lower the resolution or pick a plan with a bigger limit.

Which formats are supported?

MP4, MOV, WebM and MKV are processed with your browser’s fast built-in encoder. AVI, WMV, FLV and other older formats work in compatibility mode.

Is there a limit on the original file size?

Only your device’s memory. Phones handle a few gigabytes; computers handle more.

Why is compression slower on my phone?

The work happens on your device, so speed depends on its processor. Recent phones use the hardware video encoder and are fast; older ones take longer.

How do I choose the quality myself?

Open “Advanced settings”. Each value shows whether it was chosen automatically, and the expected size updates as you change it.

What does the quality rating mean?

It estimates how sharp the result will look, based on how much data each pixel gets and the output resolution.

Is it really free? Is there a watermark?

Yes, it is free, and there is no watermark and no sign-up.

Does it work without internet?

Yes. After the page loads once, it keeps working offline. You can also install it as an app.

Why is the result a bit smaller than the limit?

We keep a small margin so the platform is guaranteed to accept the file.

Ready to compress your video?

Free, private and done in a minute.

Choose a file