Input schema
Post text, display name, handle, optional link card title, and a strict 300-character BlueSky limit.
Free BlueSky post previewer
Preview a BlueSky post before it goes live
Draft on the left, inspect the feed-style preview on the right, then copy a clean post into ONYX when it is ready to schedule.
Need to schedule these drafts automatically?
A preview tool helps you clean up one post. ONYX turns that finished draft into a scheduled BlueSky queue. Compare the focused workflow against Buffer or Hootsuite or Planoly if you are deciding between a BlueSky-first tool and a broad visual or legacy platform.
Preview schema
Avatar, handle, timestamp, multiline post body, link-card placeholder, hashtag visibility, and native action row.
Conversion schema
Preview the draft for free, then move the final version into ONYX to schedule posts, threads, and reusable queues.
Ready to schedule the finished post?
ONYX gives you the live composer, BlueSky scheduling, thread tools, AI Voice drafts, and performance signals in one focused workspace.
Start FreeFrom free tool to scheduled queue
Stop fighting formatting limits and API bugs. Craft your blocks cleanly using our automated tools, then schedule them directly to your BlueSky feed using ONYX.