Slack upload limits
Current source-checked limits for Slack. These rows are staged because the official sources did not state policy effective dates.
Short answer
1 GB maximum file upload
Slack also applies workspace storage and retention rules. Compress to 100MB when speed and recipient bandwidth matter.
Rows
Workspace storage applies
Workspace file upload
1 GB maximum file upload
- Source checked
- 2026-06-29
- Effective date
- Not stated by source
- Duration / resolution
- Not stated in this row
- Confidence
- official-with-caveat; verified:false
Nearby platforms
This staged dataset records platform upload limits from official source pages checked on 2026-06-29. Rows are not marked verified because the official sources did not state a policy effective date; always re-check the official source and in-product upload prompt before publishing or sending media.