Post OnceYouTube tag generator
Paste the caption from your Reel or TikTok, or type what the video is about. You get its hashtags as tags, plus what people search for on YouTube, kept under the 500 character cap.
Reels become Shorts, tags included.
Keep posting Reels on Instagram. Post Once uploads each new one to your YouTube channel as a Short, with the first line of your caption as its title and your hashtags as tags.
- No credit card required
Used by creators with 350K+ followers combined
Common questions
How does this YouTube tag generator work?
Every hashtag becomes a tag, in the order you wrote them, the same way Post Once tags a video it reposts to YouTube. Your first line and first two hashtags also go to YouTube's search suggestions, which return the phrases people type into YouTube on that topic. Phrases that share no words with your caption are dropped. Click a tag to leave it out, then copy the rest.
How many tags can a YouTube video have?
YouTube has no fixed number of tags. It caps them by length: all tags together can use up to 500 characters, commas included. The generator picks tags in order until the next one would pass that cap, and the counter shows what you have used.
Do YouTube tags still matter?
They matter less than the title, description and thumbnail. YouTube says tags mostly help when a topic is often misspelled. Still, they take seconds to add.
Should I use the same tags as my hashtags?
Usually, yes. The hashtags on a Reel or TikTok already describe the video. Add a few searched phrases and drop anything that does not fit.
What title does it suggest?
The first line of your caption, cut to YouTube's 100 character title limit. That is the title Post Once gives a video when it reposts it to YouTube. Check the character counter to see how the rest of your caption fits each platform.
Where do I paste the tags on YouTube?
In YouTube Studio, open the video, go to Details, click Show more and paste them into Tags. YouTube splits them at the commas.
Can tags be added automatically when I post a Reel?
Yes. Post Once reposts each new Reel you post on Instagram to your YouTube channel as a Short and fills in the tags from your hashtags, so there is nothing to copy. See Instagram to YouTube.
Is my caption saved anywhere?
No. Hashtags become tags in your browser. Only your first line and first two hashtags go to YouTube's search suggestions, and Post Once never sees them.