DigiKitSocial Media Character Limit Checker
Check one piece of text against X (Twitter), Instagram, LinkedIn, Facebook, TikTok and YouTube character limits at the same time. Any platform you would exceed is flagged instantly.
Why limits differ by platform
Each platform sets its limit around how people actually use it — X favors short, fast posts, while Facebook and LinkedIn allow much longer text. Platforms do change these limits over time, so double-check the current limit on the platform's own help page before a critical post.
Why it matters
When you post the same announcement on several platforms, the usual problem is that the text fits comfortably on one and gets cut on another. Some platforms refuse to publish anything over the limit. Others publish it but tuck everything after a certain length behind a 'see more' link. The second case is sneakier. Your text technically fits, but most readers never get past the first couple of lines.
Character counts aren't always what they look like
Some things that look like a single character on screen are counted as several behind the scenes. Emojis with a skin tone, combined emojis, flags and certain symbols are typical examples. Some platforms count every link as a fixed length no matter how long the actual URL is. Line breaks and spaces count too, almost everywhere. So your own count and the platform's count can differ slightly. Leaving a bit of room instead of writing right up to the edge is a good habit.
Common mistakes
- Putting the most important part, like the date, discount code or link, at the end. If it lands past the cut-off point, most people won't see it.
- Assuming hashtags don't count. Hashtags and mentions are part of the character total.
- Treating video titles, descriptions and bios as if they share one limit. Even on the same platform, each field has its own cap.
- Breaking the meaning while trimming. Cutting a whole sentence usually reads better than chopping words out here and there.
A realistic scenario
An events team writes one registration announcement and plans to post it on four platforms at once. A quick check shows it's over the limit on X, and on Instagram it fits but the signup link sits behind 'see more'. The team ends up with two versions: a one-line summary with the link for the short-form platforms, and a fuller text for platforms that allow longer captions. In both, the date and signup details move into the first sentence.
An order that makes writing easier
- Write a core message that fits the shortest platform first.
- For longer platforms, add detail below that core without changing it.
- Add hashtags and mentions last, then check the count again.
- Before posting, open the draft in the platform's own preview to see exactly where it gets cut.