Blog
Guides, comparisons and every network's rules.
Honest comparisons of social media schedulers, what each network really accepts, and how to schedule posts to Bluesky, Mastodon, Threads, Discord and Telegram.
Limits and rules
What each network actually accepts, taken from its API and checked against a real publish. The same rules Preflight enforces before a post leaves.
Social media character limits and media rules, every network
Twelve networks, one table, verified against the APIs.
Updated
Instagram caption limit, hashtags, picture and Reel rules
2,200 characters, 30 hashtags, JPEG only, 4:5 to 1.91:1.
Updated
TikTok video requirements for the API: length, fps, size
The frame-rate rule that fails hours later, and how to catch it first.
Updated
YouTube Shorts length, title and description limits
Three minutes, 100-character titles, 5,000 bytes, 15 hashtags.
Updated
Threads post limits: 500 characters, 20 pictures, 5 links
Why an emoji costs four characters on Threads.
Updated
Scheduling by network
How publishing to each network works under the hood, what a scheduler can and cannot do there, and the settings worth knowing.
How to schedule Bluesky posts (300 characters, 4 images, video)
App passwords, 300 graphemes, four pictures or one video.
Updated
How to schedule Mastodon posts on any instance
Instance limits, visibility, content warnings and threads.
Updated
How to schedule Threads posts with the Threads API
500 characters that are really bytes, five links, polls and chains.
Updated
How to schedule Discord posts to a channel with a webhook
A webhook, not a bot; 2,000 characters and 10 MB files.
Updated
How to schedule Telegram channel posts from a scheduler
When Telegram’s own scheduler is enough, and when it is not.
Updated
Alternatives
Prices at the number of channels people actually run, with what each tool lacks. Rivals named, figures dated.
Buffer alternatives in 2026: prices at 8 channels, honestly
What eight channels really cost, and what you give up at each price.
Updated
Hootsuite alternatives for small teams (2026 prices)
Ten networks and client approvals without a $99-a-seat bill.
Updated
Publer alternatives: flat prices, APIs and more networks
For the people who outgrew per-account billing.
Updated
Postiz alternatives: hosted, no Docker, same API and MCP
The same agent and API story without running your own server.
Updated
Comparisons
Preflight against one tool at a time, including where the other one is ahead.
Guides
Longer pieces for choosing a tool or a workflow.
17 articles. Every figure carries the date it was checked; if a vendor has changed a price since, write to [email protected] and we will correct it.
Write it once. Let the rules be our problem.
Preflight checks every post against each network's rules before it leaves, then publishes it to twelve networks. Free plan, no card.