What problem does this tool solve?
Hashtag lists often include repeated terms, extra spaces, and inconsistent formatting. Our formatter cleans up the hashtags you provide so they are easier to use in social posts.
Six practical questions answered
How do I remove repeated hashtags from a list?
Paste the list and enable duplicate removal. Matching is case-insensitive, so #SEO and #seo are treated as the same hashtag.
Can I add a hash symbol to every keyword automatically?
Yes. The formatter places # before each valid term when it is missing.
How do I put hashtags in alphabetical order?
Choose the alphabetical sorting option. The output is ordered using the selected language’s sorting rules.
How should I clean up hashtags for Instagram?
Remove duplicates, invalid punctuation, and unnecessary spacing. Then review whether each remaining hashtag is relevant to the post.
How do I prepare a hashtag list for LinkedIn?
Start with a small set of relevant terms. Use the formatter to standardize them; it does not determine what is popular or suitable for your audience.
How can I compare two sets of hashtags?
Enable comparison and paste a list into each field. The result separates shared hashtags from those found only in the first or second list.
How it works, with an example
Spaces, commas, semicolons, line breaks, and # separate terms. Letters, digits, and underscores are retained. Duplicate comparison ignores case.
Practical example
With deduplication on, “SEO, #seo; Marketing” becomes “#SEO #Marketing.” Compared with “Marketing AI,” #Marketing is shared, #SEO is only in list 1, and #AI is only in list 2.
Common use cases
- Format keywords for a post.
- Remove case-insensitive duplicate hashtags.
- Copy a cleaned set of terms.
Limits and considerations
There is no trend, reach, or search-volume analysis. Join multiword terms without spaces or with underscores. Comparison treats each list as a set of unique hashtags.
Frequently asked questions
Does the hashtag formatter discover trending tags?
No. It has no external trend data and only processes the terms you enter.
Can I format an entire hashtag list at once?
Yes. Separate terms with spaces, commas, semicolons, or line breaks.
Can duplicate hashtag removal be turned off?
Yes. Disable the duplicate option when you want to keep repeated terms in the formatted list.
Can I use the output in TikTok posts?
Yes. You can prepare terms for TikTok as well, then check relevance and the platform’s current rules before posting.
Is hashtag cleanup free to use?
Yes. No account or payment is required.
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Request a free consultation (German form) →Editorial team: SEOSTUDIO · Updated November 9, 2026 · Tool version 1.1