Which video shapes TikTok, YouTube, Instagram, Facebook, Threads, X, LinkedIn, Pinterest and Bluesky accept, which one each prefers, and how to make one master video work on all of them.
The real caption, title and description limits for Instagram, TikTok, YouTube, LinkedIn, X, Threads, Pinterest, Facebook and Bluesky, checked against each platform's own pages, and why a scheduler sometimes cuts off a caption the app would accept.
How long a video can be on TikTok, Instagram Reels, YouTube Shorts, Facebook, LinkedIn, X, Threads, Pinterest and Bluesky in 2026, from each platform's own pages, including the YouTube rule that blocks some Shorts over one minute.
The YouTube Data API's upload quota changed twice in the last year, and on 2 November 2026 Google lifted the private-only lock on unverified projects. What an upload costs now, how many videos you get a day, and what still needs an audit.