Creative Workflow
Fixing creative validation errors
How to resolve a blocked post caused by creative: add alt text, use a supported format, or replace an image that can't be made compliant.
Last updated June 14, 2026
If a post is blocked on creative, the fix is usually quick. The block tells you what failed; resolve it and the post can move forward.
Troubleshooting
- Blocked: missing alt text.
- Add descriptive alt text to the image. Signal blocks rather than publishing inaccessible media.
- Blocked: unsupported format.
- Replace the asset with a supported image format and re-attach it.
- Blocked: image too large.
- Signal reduces oversized images automatically, but an extreme file may still exceed limits. Replace it with a smaller source image.