Cross-posting and scheduling: answers
Straight answers to what people ask about posting everywhere at once — with each network’s own tools first, and Mellow Hub where it helps.
- Sizes, limits and formats (26)The numbers behind every network: sizes, lengths, character counts and formats, each read from the network’s own page on the day shown.
- Scheduling and posting (20)How to schedule and publish on each network, with the network’s own tools first.
- Cross-posting and teams (9)Posting the same content to several networks and accounts without it looking pasted, and doing it with a team.
- AI agents and MCP (10)What an AI agent can and cannot do with your social accounts, and how to set it up so a person stays in charge.
- Content planning (5)Calendars, templates and routines for planning content, and turning one idea into posts for several networks.
- Writing and making posts (12)How to write and make posts that fit each network, starting from what the network itself says.
- How each network’s features work (3)How one feature of one network works, what it allows and what it doesn’t, in the network’s own words and with the day they were read.
- Free tools, explained (6)What each free tool does, how to use it and what its numbers mean.
- Analytics and growth (14)What each network’s metrics mean, where to find them and how to read them.
- Basics and definitions (4)Plain-language definitions of the terms this library uses, each with an example.
Sizes, limits and formats
Scheduling and posting
Cross-posting and teams
AI agents and MCP
- Can Claude post to Instagram for you?
- Can an AI agent manage your social media accounts?
- Can ChatGPT schedule social media posts?
- ChatGPT prompts for social media posts that fit each network
- What are Claude connectors, and how do you add one?
- Is social media automation allowed? What X, Instagram, TikTok and LinkedIn say
Content planning
- A free social media content calendar template you can copy
- What are content pillars for social media, and how do you choose them?
- An Instagram carousel template: what goes on each slide, and the limits it has to fit
- What is a social media content calendar, and how do you build one?
- A YouTube thumbnail template: where things go, and the file rules it has to meet
Writing and making posts
How each network’s features work
Free tools, explained
- Can you preview an Instagram post before you publish it?
- How will a thumbnail look in YouTube’s feed, search and sidebar?
- How do you make a 3-, 6-, 9- or 12-post grid on Instagram?
- How do you split one wide image into Instagram carousel slides?
- Where do the buttons cover a Reel or a Short?
- How long and how big can a video be on each network?
Analytics and growth
- How does the YouTube algorithm work? What YouTube says
- How do you find trends on TikTok?
- How do you find trending reels on Instagram?
- How do you find trending YouTube Shorts now that the Trending page is gone?
- How do you grow on Instagram? What Instagram itself says
- How do you grow on TikTok? What TikTok itself says