What it does
The hashtag fixer rewrites hashtags so X links them correctly (a space before #, no space after it, no hyphens), removes case-insensitive duplicates, optionally limits or moves them, and flags number-only tags that X won't link.
How does X decide what counts as a hashtag?
A hashtag on X is a # sign that isn't glued to a preceding letter or number, followed by letters, numbers or underscores, with at least one letter. The link stops at the first character that isn't allowed, such as a hyphen, an apostrophe or a full stop.
| You typed | What X links | Fix |
|---|---|---|
great#news |
nothing | great #news |
# news |
nothing | #news |
#self-care |
#self |
#SelfCare |
#mother's-day |
#mother |
#MothersDay |
#2026 |
nothing | add a word: #Launch2026 |
#one#two |
#one only |
#one #two |
What does the fixer change?
- Joins a lone
#to the word after it. - Adds a space before a
#stuck to the previous word (but leaves things likeC#alone). - Splits run-together tags.
- Turns hyphenated tags into CamelCase (optional).
- Removes repeats, ignoring case (optional).
- Moves tags to the end and/or limits how many you keep (optional).
Links are protected, so a #section at the end of a URL is never touched. Every change is listed under the result.
Should hashtags go at the end?
Either works; at the end tends to read better. Tags in the middle of a sentence are fine when they're natural words ("Watching the #WorldCup final"). A block of tags at the end keeps the sentence clean. The hashtags guide has more on choosing them.
FAQ
Why didn't X turn my hashtag into a link?
The usual reasons: the # is glued to the previous word (great#news), there's a space after it (# news), the tag is only numbers (#2026), or it contains a hyphen or apostrophe, where the link stops early.
Why capitalise words in hashtags?
#SelfCare is easier to read than #selfcare, and screen readers are more likely to read it as two words. X treats hashtags case-insensitively, so it's still the same tag.
How many hashtags should I use?
There's no magic number. X's Help Center suggests no more than two per post as best practice. One or two relevant tags usually read better than a block of ten, and the limit option lets you enforce your own rule.