Instagram Caption Checker — fix captions for the 5-hashtag limit

Since December 2025 Instagram allows only 5 hashtags per post and Reel (caption and first comment combined). Posts with more are blocked or lose their extra tags, and most caption templates, saved libraries and scheduled posts still carry 15–30 tags.

Paste your captions (one or thousands) and get, for each one:

• Rule check: hashtags over the limit, captions over 2,200 characters, more than 20 @mentions.
• A fixed caption, ready to paste: your text untouched, the 5 most relevant hashtags kept, engagement-bait tags (#like4like, #follow4follow…) and very broad tags (#love, #instagood…) removed, spacer dots cleaned up. Tags inside sentences keep their word ("I love #coffee" stays readable as "I love coffee" if the tag is dropped).
• Suggested hashtags: the 5 to keep, ranked by how well they match what the caption is about, topped up with keyword ideas from the caption when you have fewer than 5.
• Hook check: the ~125 characters shown before "more", and a warning if they're wasted on hashtags or mentions.
• Tips: links that won't be clickable, missing call to action, duplicate and overlong tags.
• Brand hashtags you list are always kept.

No Instagram login, no account access: it works on the text you give it, so it's instant and safe.

Who it's for

• Social media agencies migrating caption libraries and client templates to the 5-tag rule.
• Schedulers and SaaS tools that need a bulk pre-publish check (call it from the API).
• Creators and brands cleaning up drafts and evergreen posts.

Input

{
  "posts": [
    {
      "id": "cold-brew-launch",
      "caption": "Our new oat milk cold brew is here! ... #coffee #coldbrew #oatmilk #love #like4like ...",
      "firstComment": "#coffeetime #latteart"
    }
  ],
  "brandHashtags": ["#austinbeans"],
  "maxHashtags": 5
}

Output (one row per caption)

{
  "id": "cold-brew-launch",
  "ok": false,
  "issues": ["17 hashtags: Instagram allows 5 per post (caption and first comment combined); extra tags are blocked or dropped", "Engagement-bait hashtags can limit reach: #like4like #follow4follow"],
  "tips": ["Very broad hashtags rarely help discovery: #love #instagood #photooftheday"],
  "hashtagCount": 17,
  "suggestedHashtags": ["#coldbrew", "#oatmilk", "#austincoffee", "#smallbatch", "#austintx"],
  "characters": 343,
  "previewText": "Sunday reset ☕ Our new oat milk cold brew is finally here! ...",
  "fixedCaption": "Sunday reset ☕ Our new oat milk cold brew is finally here! ...\nWhich flavor should we drop next? Comment below 👇\n#coldbrew #oatmilk #austincoffee #smallbatch #austintx",
  "fixedFirstComment": null
}

fixedFirstComment: null means the first comment only held hashtags and can be deleted, because its tags were merged into the 5 kept in the caption.

Pricing

Pay per caption checked. With onlyProblems on, you pay only for captions that need changes.