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
- 2026-09-28
- Effective date
- Not stated by source
- Duration / resolution
- Not stated in this row
- Confidence
- official-with-caveat; verified:false
Nearby platforms
This staged dataset began on 2026-06-29. See each row for its source-check date and unresolved evidence. Rows remain unverified where an exact policy effective date is not established; always re-check the official source and in-product upload prompt before publishing or sending media.