How to compress a video for Discord, email or WhatsApp — free of uploads, on your own computer

Shrink a video to fit Discord, email or messaging limits in a few clicks, without uploading it to a compression website.

Free · no account · 3 free uses of every tool · also for Mac (Intel), Windows, Linux

Phone videos are huge: a one-minute 4K clip can be several hundred megabytes, while Discord, email and many forms only accept small files. Online compressors make you upload the video first, which is slow and not private. This does the same on your computer.

Steps

1. Open GUI Hub → Video Toolkit → Compress / convert to MP4.
2. Choose your video.
3. Pick Quality: Tiny and Resolution: Max 720p for messaging limits, or Small and Max 1080p for good-looking sharing.
4. Choose where to save and press Compress.

How much smaller?

Typical phone footage shrinks by 70–95% at Small + 720p, while still looking good on a phone screen. If the file is still too big, try Tiny and 480p, or trim the clip first with the Trim tab.

Also converts

The result is always an MP4 that plays everywhere — handy for .mov files from iPhones or .mkv files that won't open on a TV.

What powers it

FFmpeg, the open-source engine behind most video software (GPL). GUI Hub downloads a static FFmpeg build from its GitHub release and verifies it.