Hashtag Limit Checker
Paste a caption and see how many unique hashtags it holds, checked against Instagram, TikTok, X, LinkedIn and YouTube in one view.
- Hashtags found
- 0
- Unique tags
- 0
- Platforms checked
- 5
- All pass
- -
Runs in your browser. Nothing you enter is uploaded.
What it does
Each network has a different tolerance for hashtags, and a caption written for TikTok can easily carry more than LinkedIn or X handles well. This checker pulls every hashtag out of your pasted text, removes duplicates, and compares the count with a ceiling for five platforms at the same time.
It is built for the moment before you cross-post: you see which platform versions need trimming and exactly how many tags to remove, alongside a short recommended range for each network.
How to use it
- 1
Paste your caption or hashtag list into the "Caption or hashtags" box.
- 2
Read the stats row: hashtags found, platforms checked, and whether all platforms pass.
- 3
Check the chips below to confirm which tags were detected.
- 4
Go through the platform cards. A red "Fail (+N)" badge tells you how many tags to cut for that network.
What you get
A live summary: the unique hashtag count, the detected tags as chips, and a card for each of five platforms showing "count / max", the recommended range, and a Pass or Fail (+N) badge.
When to use it
- Cross-posting one caption
- Paste a Reel caption and see at a glance that it passes on Instagram and TikTok but fails on X and LinkedIn, with the overage shown.
- Auditing a saved hashtag block
- Paste the block you reuse on every post to see whether duplicates were inflating it and how many unique tags it really has.
- YouTube description checks
- Paste a video description to see whether its hashtag count stays under the tool's YouTube ceiling of 15.
Example
Input
Golden hour in Lisbon. #Travel #lisbon #travel #photography #goldenhour #sunset
Output
Hashtags found: 5 (all lowercased, #Travel and #travel counted once) Instagram: 5 / 30, Pass TikTok: 5 / 100, Pass X / Twitter: 5 / 2, Fail (+3) LinkedIn: 5 / 5, Pass YouTube: 5 / 15, Pass All pass: ✗
Only X fails here, so trimming three tags for the X version is the only change needed.
Tips
- The X ceiling of 2 and the LinkedIn ceiling of 5 are best-practice limits rather than hard blocks. Treat a fail there as "this will look spammy", not "this will not post".
- The Instagram card uses the long-standing cap of 30, but Instagram has been moving toward far fewer tags per post. If the app rejects a caption or trims your tags, cut to the recommended 3 to 5.
- Anything written as # followed by letters or numbers counts, including "#1" in a sentence or a "#section" link anchor. Rephrase those if they skew the number.
Questions
Does the checker count #Travel and #travel as two hashtags?
No. Tags are lowercased before counting, so case variants of the same word count once, which matches how platforms group them.
Why does the YouTube card fail above 15 hashtags?
15 is a conservative ceiling. YouTube shows only a few hashtags above a video's title and can ignore hashtags altogether on videos that overuse them, so a short, relevant set does more than a long block in the description.
Is there a hashtag limit on X?
X does not block extra hashtags, but more than one or two makes a post harder to read and is widely treated as spammy. The checker uses 2 as the ceiling to flag that.
Does it tell me if any of my hashtags are banned?
No, this page only counts. Run the same set through the banned hashtag checker to see whether any tag appears on a list of restricted Instagram tags.