Compress video for Slack
Drop a screen recording or demo into Slack and it usually uploads fine — the per-file cap is about 1GB. But on a free workspace, everyone shares roughly 5GB of total storage, a few big videos fill it, and old files expire after 90 days anyway. Compressing is about saving that precious storage and making the clip load fast for the team. The tool above defaults to 50MB.
Quick answer
Slack's per-file limit is about 1GB, the same on the free plan, so videos seldom get blocked for being "too large". The real squeeze on the free plan is the ~5GB total workspace storage and the 90-day file retention — shrinking videos saves storage and uploads faster. ConvertMeow compresses locally in your browser — no upload, no watermark.
Shrink the video before uploading
Target size
Derives a bitrate from target size ÷ duration and re-encodes; best for short clips.
Slack's limits: per-file vs workspace storage
The per-file limit is about 1GB, identical on free and paid plans — so a single video almost never gets rejected as too large.
The free plan's real limit is total workspace storage: roughly 5GB, with messages and files kept for only 90 days. A few uncompressed recordings can eat a big chunk, so shrinking videos is worth it.
- Per file: ≤1GB (rarely a concern).
- Free workspace: ~5GB total storage, files kept 90 days.
- Compress to tens of MB: save storage, upload faster, load smoothly in channels.
How small should a team video be?
A demo for colleagues or a bug-repro recording just needs to be clear on a phone or laptop — original quality is overkill. 30–80MB is usually sharp and light; trim long recordings to the key part first for better results and less workspace storage used.
Frequently asked questions
The per-file limit is about 1GB, the same on the free plan, so single videos are rarely blocked. The free plan's constraint is the ~5GB total workspace storage and 90-day retention, so you compress mainly to save storage and upload faster.
Because the whole free workspace shares about 5GB of total storage, and a few uncompressed recordings can fill it. Compressing videos to tens of MB saves a lot; older files also auto-expire after 90 days, freeing space.
No. Compression runs entirely locally in your browser with ffmpeg — never uploaded, no watermark, no cap.
Updated · ConvertMeow team