Cross-posting guides
Cross-Posting Guides for 12 Platform Pairs
One guide per pair, each with the limits both platforms actually enforce, what stops before it is published, and how long the trip takes. The speed column below is derived from whether the origin platform pushes to us, so it says what is true rather than what would sell.
| Guide | Origin | Destination | Time to first echo |
|---|---|---|---|
| TikTok to YouTube Shorts | TikTok | YouTube Shorts | seconds to minutes |
| TikTok to Instagram | TikTok | seconds to minutes | |
| YouTube Shorts to TikTok | YouTube Shorts | TikTok | seconds to minutes |
| Instagram to TikTok | TikTok | seconds to minutes | |
| TikTok to X | TikTok | X | seconds to minutes |
| YouTube Shorts to Instagram | YouTube Shorts | seconds to minutes | |
| X to Bluesky | X | Bluesky | seconds to minutes |
| X to Mastodon | X | Mastodon | seconds to minutes |
| Bluesky to X | Bluesky | X | under a second |
| Bluesky to Mastodon | Bluesky | Mastodon | under a second |
| Mastodon to Bluesky | Mastodon | Bluesky | under a second |
| Threads to Bluesky | Threads | Bluesky | seconds to minutes |
3 of these 12 guides start from a platform that pushes new posts to us — Bluesky and Mastodon. The other 9 start from a platform that offers nobody a push, so we ask on a tightening interval and say so. Limits verified 27 August 2026.
Video, where nobody else has a page
The cross-posting tools that rank for these terms cover text platforms. We publish to and from TikTok, Instagram, YouTube Shorts and Twitch as well, so these guides answer questions nobody else has written down — starting with which of your videos can even make the trip.
Text, where the socket earns its keep
Bluesky and Mastodon push new posts down a connection we hold open. Every guide below either starts from one of them, or ends at one. Where the origin streams, the echo leaves in under a second; where it does not, the guide says so in the same size type.
Reference
Character limits, one page per platform
Every figure in these guides comes from one file, and each platform has its own reference page for the number, what happens when you exceed it, and whether there is a thread to put the rest in.