Hashtag Set Builder
Turn keywords into clean hashtags, remove duplicates, and check your set against each platform's real limits. Copy-ready blocks, all in your browser.
Build your hashtag set
Separate entries with commas or new lines. A multi-word entry like "gym life" becomes one tag: #GymLife.
This tool formats and checks the hashtags you bring. It does not measure popularity or trends.
Add a few hashtags or keywords above to build your copy-ready set.
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Explore ServicesHow this hashtag set builder works
This tool runs entirely in your browser on hashtags and keywords you provide. It formats each entry into a valid tag, merges multi-word phrases into one readable PascalCase hashtag ("gym life" becomes #GymLife), strips characters platforms will not link, removes case-insensitive duplicates, and rejects numbers-only tags because no major platform links them.
Limit checks use each platform's documented rules, verified July 2026: Instagram allows at most 30 hashtags per post, and YouTube ignores every hashtag on a video that uses more than 15. X, TikTok, and LinkedIn publish no hard hashtag cap; there the practical budget is the post's character limit, which the tool shows for your assembled set.
The suggested per-platform ranges shown by the tool (for example 3 to 5 hashtags on Instagram) come from the platforms' own published creator guidance. They are recommendations, not measurements; this tool has no popularity, volume, or trend data and does not pretend to.
The copy blocks are formatted for how each platform is actually used: an inline block for captions, a one-per-line block for editing, a trimmed block that fits the hard cap when your set exceeds it, and an Instagram first-comment block with leading dot lines so the caption stays clean and hashtags sit below the fold.