Free Social Media Hashtag Generator

How this tool computes its result

Takes newline-separated keyword phrases and, per line, deterministically generates a fixed set of variations: the phrase with spaces stripped, all words joined together, the first word alone, the last word alone, the first two words joined, and a camelCase join — the multi-word variations only consider words longer than 2 characters. Results across all lines are deduped through a Set. When more than one keyword line is entered, one extra cross-line combination is appended: the first word of the first line joined with the last word of the last line. The deduped hashtag list is then evaluated against five hard-coded platform profiles (Instagram, Twitter/X, LinkedIn, TikTok, Facebook) for max hashtag count, max character count, and a recommended subset size.

Worked example

Keywords 'digital marketing' and 'content creation' (one per line) generate #digitalmarketing, #digital, #marketing, #digitalMarketing from line 1, and #contentcreation, #content, #creation, #contentCreation from line 2, plus one cross-line combo #digitalcreation (first word of line 1 + last word of line 2). On the Instagram tab (max 30 hashtags, 10 recommended), all generated tags fit within the character/count limits, and the 'Recommended' set takes the first 10 of that deduped list.

When not to use this tool

This is a pure keyword-permutation generator, not a trending or search-volume research tool — it has no connection to any platform API or real usage data, so it cannot tell you which of the generated variations are actually being searched or are currently trending.

Common mistakes

• - Expecting the output to be sorted by popularity or relevance — hashtags preserve insertion order from the generation loop, deduped via a Set, with no ranking applied.
• - Typing very short words (2 characters or fewer, like 'AI' or 'to') as part of a multi-word keyword phrase — the words.filter((w) => w.length > 2) step excludes them from the combined multi-word variations, so meaningful short terms can silently disappear from the joined hashtags.
• - Switching the platform tab expecting new hashtags to be generated — the underlying hashtag list from your keywords never changes; only the character/count limits and the size of the 'recommended' slice taken from that same list change.

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