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App Store keywords limit
The App Store keywords field allows 100 bytes. In plain English that is 100 characters, but accented letters take 2 bytes and many Asian characters 3, so localized keyword fields fit fewer.
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Check the same text against X, Instagram, LinkedIn, YouTube, Google and SMS at once, with your own limit set to this one.
Open the character counterApp Store keywords: the numbers
| Maximum | 100 bytes |
|---|---|
| How it counts | UTF-8 bytes: plain English letters are 1 byte, accented letters 2, most Asian characters 3, emoji 4. |
| English words that fit | 15–18 |
Last reviewed October 2026. Platforms change their limits; when it matters, check the platform’s help pages.
What counts as a character
- UTF-8 bytes; separate keywords with commas, without spaces after them.
Best length vs the maximum
- Do not repeat words already in your app name or subtitle; Apple indexes those already.
- Use singular forms and leave out spaces after commas to save room.
- Do not use competitors’ names or trademarks.
Questions and answers
Is the App Store keyword limit in characters or bytes?
Bytes: 100.
Should I put spaces after the commas?
No; they use up bytes and are not needed.