runs 100% in your browser
Compress a video for Slack
Free, in your browser, nothing uploaded. Drop the file, press the button.
Slack accepts big files, but a 400 MB screen recording is rude to everyone who has to fetch it — and some workspaces restrict upload sizes anyway. The Slack preset lands around 50 MB: small enough to upload fast and play smoothly inline, big enough to keep a long demo legible.
uses your device's built-in video encoder · nothing to install · no file ever leaves your browser
No upload queue
Compression runs on your own CPU. A 500 MB recording never crawls up your connection to someone's server — there's nothing to upload, wait on, or trust.
No command line to learn
The same H.264 encoding professionals tune by hand — with the bitrate math and resolution worked out for you. Pick a size, press the button.
Private by default
Your video is processed in browser memory and discarded when you close the tab. We never see a frame of it — only anonymous size and preset stats.
Questions people actually ask
What is Slack's file size limit?
Slack itself allows up to 1 GB per file, but workspace admins can set lower caps, and free workspaces have tight total storage. 50 MB stays comfortably inside almost any policy.
Why compress if Slack accepts 1 GB?
Storage quotas, download time, and mobile viewers. A compressed clip plays instantly in-channel instead of forcing a gigabyte download on whoever presses play.