YouTube enforces a hard limit of 15 hashtags, and crucially it ignores every hashtag on a video that exceeds it rather than just trimming the extras. This helper counts your hashtags, flags malformed ones, and warns the moment you cross the line that would void them all.
How it works
The tool extracts hashtags from your text by finding each token that begins with a hash symbol (or by treating each whitespace-separated word as a tag if you omit the hash). It strips invalid characters, flags any token containing spaces or punctuation that would break it, and removes the leading hash for counting.
It then compares the count against YouTube’s limit of 15. Below or at 15 the status is green. Above 15 the status turns red with a clear warning that YouTube will ignore all hashtags, not just the surplus. It also reports the total character cost so you can keep your description tidy.
Example
Pasting #cooking #recipe #homecooking #dinner yields four valid hashtags, well
under the limit, with the first three (#cooking, #recipe, #homecooking)
flagged as the ones that will appear above the title. A token like #home cooking
is flagged because the space splits it, so only #home would register.
Tips and notes
- Stay at or under 15 — going over voids every hashtag on the video.
- The first three hashtags appear above the title, so make them your strongest.
- Best practice is 3 to 5 highly relevant tags, not the full 15.