Tags help YouTube understand what your video is about

Tags are short words or phrases you add to a video that describe its content. YouTube uses tags to match your video with people searching for those topics, and to recommend your video to viewers watching similar content. You add tags in the video details section before or after you upload — YouTube shows them to the platform's recommendation system, not to viewers watching your video.

Tags work alongside your title and description. A video titled "Sourdough Bread Tutorial" might have tags like "sourdough", "bread baking", "how to make bread", and "baking tutorial". These tags tell YouTube which searches and recommendation feeds your video belongs in. The more specific your tags, the better YouTube can place your video in front of people actually looking for that content.

Key Takeaways

  • Tags are added in YouTube Studio under the Details tab, either before publishing or by editing a video after it goes live.
  • Use specific, single-word or short-phrase tags that directly describe your video's content rather than generic words.
  • The first tag you add is weighted more heavily by YouTube's system, so put your most important tag first.
  • YouTube limits you to 500 characters total across all tags, which usually means 10 to 15 tags per video depending on length.
  • Avoid tags unrelated to your video content, as YouTube penalizes misleading tags by reducing your video's visibility.

How to add tags before uploading a video

Start in YouTube Studio, which you reach by clicking your profile icon in the top right of YouTube.com and selecting "Create" or going directly to studio.youtube.com. Click "Create" or "Upload videos" and select the video file from your computer. While the video uploads, YouTube shows you the Details tab where you enter your title and description.

Scroll down in the Details tab until you see the "Tags" field. Click in the text box and type your first tag — for example, "sourdough" or "bread baking". Press Enter or comma to confirm the tag. YouTube will show it as a small box with an X to remove it if you change your mind. Add your next tag the same way. Continue until you have added all the tags you want, then finish uploading by clicking "Publish" or "Schedule".

How to add or change tags on a video that's already published

Go to YouTube Studio and click "Videos" in the left menu to see all your uploads. Find the video you want to edit and click on it. The Details tab opens automatically. Scroll down to the Tags field, which shows any tags already on the video. Click in the field to add new tags using the same method — type the tag and press Enter or comma to confirm it.

To remove a tag, click the X on the tag box itself. You can edit tags on a video at any time, even months after publishing. Changes take effect when ready, though YouTube may take a few hours to fully process the change in its recommendation system.

What makes a tag effective

The best tags are specific and directly related to your video's actual content. If you make a video about sourdough starters, tags like "sourdough", "starter", "fermentation", and "bread baking" are effective. Tags like "cooking", "food", or "tutorial" are too broad — they describe thousands of videos and don't help YouTube narrow down who should see yours.

Put your most important tag first. YouTube weights the first tag more heavily than tags further down the list, so if your video is primarily about sourdough, make "sourdough" your first tag rather than your fifth. Use single words or short phrases (two to three words maximum). "Sourdough starter" works; "how to make a sourdough starter from scratch" is too long and wastes your character limit.

Avoid tags that don't match your video. YouTube's system detects when tags are misleading — for example, adding "gaming" tags to a cooking video — and reduces how often your video appears in recommendations. You get no benefit from misleading tags and active harm to your visibility.

Tag limits and character counts

YouTube allows a maximum of 500 characters across all your tags combined. This usually translates to roughly 10 to 15 tags per video, depending on how long each tag is. A single-word tag like "sourdough" uses 9 characters (including the space after it). A three-word tag like "bread baking tutorial" uses 21 characters.

You do not need to use all 500 characters. Five or six highly relevant tags are better than 15 tags that include filler words. Focus on tags that actually describe your video rather than padding the list to reach a character limit.

How tags differ from titles and descriptions

Your title and description are visible to people watching your video. Tags are not — viewers never see them. Tags are purely for YouTube's system to understand and categorize your content. Your title should be clear and compelling to a human reader; your tags should be clear and specific to YouTube's algorithm.

A good title might be "How I Make Sourdough Bread at Home — Complete Beginner's Guide". A good description might explain what viewers will learn and include timestamps. Your tags would be "sourdough", "bread baking", "how to make bread", "baking tutorial", "beginner bread", and similar terms. The title and description help people decide whether to click and watch; the tags help YouTube decide who to show the video to in the first place.

Common mistakes to avoid with tags

Do not use tags as a second description. Tags like "in this video I show you how to make sourdough" waste characters and confuse YouTube's system. Use short, specific terms instead. Do not tag every related topic you can think of — tag only what your video actually covers. If your video is about sourdough starters, do not add tags for "pasta making" or "cake decorating" just because they are food-related.

Do not use your channel name or video title as a tag unless it is genuinely a search term people use. "My Channel" or "Episode 47" as tags does not help YouTube understand your content. Do not use special characters, numbers, or hashtags in tags — YouTube treats these as literal characters, so "#sourdough" is a different tag than "sourdough" and less useful.

Frequently Asked Questions

Can I see what tags other creators use on their videos?

No, YouTube does not show tags publicly. You cannot see another creator's tags by watching their video. You can only see tags if you have editing access to the video in YouTube Studio. This is by design — tags are for YouTube's system, not for viewers or competing creators to see.

Do tags affect how much money I make from a video?

Tags do not directly affect revenue. However, tags affect how many views your video gets by controlling who YouTube shows it to. More views can lead to more revenue, so good tags indirectly help. Better tags mean your video reaches the right audience, which usually means higher watch time and engagement — both of which improve your earnings.

What happens if I use the same tags on every video?

YouTube's system will notice and may reduce how much weight it gives those tags. If every video you upload has the exact same 10 tags, YouTube learns that those tags are not specific to individual videos and stops trusting them as much. Use tags that actually describe each specific video's content instead.

Should I use tags in multiple languages if my audience is multilingual?

You can, but it is usually not necessary. YouTube's system handles language detection automatically. If you make a video in English, use English tags. If you make a video in Spanish, use Spanish tags. If you make a video in both languages, you can use tags in both, but focus on the language of your video's primary content.

How long does it take for tags to affect my video's visibility?

YouTube typically processes tag changes within a few hours, though it can take up to 24 hours for the full effect to show in recommendations and search results. You do not need to wait before publishing — add your tags before you publish and YouTube will include them from the moment the video goes live.