Signal
Creative Workflow

Understanding creative readiness

Creative readiness means a post's media has passed validation and been prepared into a provider-safe form. Not-ready creative blocks the post.

Last updated June 14, 2026

"Ready" creative is media that has passed Signal's validation and been transformed into a provider-safe derivative for the target platform. If creative isn't ready — missing required alt text, an unsupported format, an oversized file that can't be reduced — the post is blocked until it's resolved.

Readiness depends on

  • ·Required alt text being present (accessibility).
  • ·A supported image format.
  • ·A size the platform will accept (Signal reduces oversized images where it can).