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Captions and character limits

Each network's caption limit, how to read the counters under the caption, and how pasting keeps your layout.

For everyone

Every network caps how long a caption can be. lmnts checks the caption against every network on the post as you type. While it's over any of them, the post can't be sent for review, approved or scheduled.

The counters

Under the caption there's a line for each network, for example 1,180/2,200 · 4/30 hashtags · 1/20 mentions (Instagram caption limit). Go over and the line turns red and says what to change.

A caption box with three counter lines under it, for the Instagram caption limit with hashtags and mentions, the Threads post limit with links, and the LinkedIn post limit.

Limits by network

NetworkLimit
Instagram2,200 characters, 30 hashtags and 20 @mentions
Facebook63,206 characters (the counter only appears if you go over)
Threads500 characters and 5 links
LinkedIn3,000 characters
TikTok2,200 characters for a video, 4,000 for a photo post
YouTube5,000 bytes for the description, with no < or > signs. The YouTube title is up to 100 characters.

Instagram and Facebook stories publish no caption, so no limit applies to them.

When you're over

  • Shorten the caption until the line is no longer red.
  • Or take that network off the post.
  • If the Ready for review? box still lists the problem, press Check again.
A red counter line under a caption saying Instagram allows at most 30 hashtags in a caption and this one has 32, with the advice to remove some hashtags or remove Instagram.

Threads is stricter: while the caption is over 500 characters, lmnts won't add Threads at all and says Over the Threads limit: shorten the content before adding Threads.

Pasting keeps your layout

Paste from a document, an email or a web page and lmnts keeps the blank lines, bullet points, numbered lists and indents. Bold, links and other formatting are dropped, because networks post plain text.

The YouTube title

With YouTube on the post, a YouTube title field appears above the caption, with its own counter. Leave it empty and the caption's first line becomes the video's title.