What blocking a tag does and doesn't do

Blocking a tag on Tumblr removes posts with that tag from your dashboard and search results. When you block a tag, Tumblr's system filters out any post that has been tagged with that word or phrase — you won't see it in your feed, and it won't appear if you search for related content. This is different from blocking a person: blocking a tag affects content, not accounts.

The filter works on your account across all devices and browsers where you're logged in. If you block the tag #spiders, for example, a post tagged #spiders won't show up on your dashboard even if it comes from someone you follow. The person who posted it has no way to know you've blocked the tag — there's no notification sent to them.

One important limit: blocking a tag only filters your own view. If someone sends you a direct message with a blocked tag in it, or if you visit someone's blog directly and they've used a blocked tag, you'll still see it. The filter applies to your dashboard and search, not to direct messages or individual blog pages.

Key Takeaways

  • You block tags through your account settings under Filtering, and you can block as many tags as you need.
  • Blocked tags disappear from your dashboard and search results, but the person who posted them won't know you've blocked the tag.
  • If someone sends you a direct message containing a blocked tag, or you visit their blog directly, you'll still see the blocked tag in that context.
  • You can unblock a tag at any time by going back to your Filtering settings and removing it from your list.

How to block a tag in your account settings

Open Tumblr and click the account icon in the top right corner. From the menu that appears, select Settings. On the Settings page, look for the Filtering section — this is where Tumblr keeps all your content filters.

In Filtering, you'll see a field labeled "Blocked tags." Click in that field and type the tag you want to block. You don't need to include the # symbol — just type the word or phrase. Press Enter or Return after typing each tag. Tumblr will add it to your blocked list and begin filtering when ready.

You can add multiple tags at once by typing each one and pressing Enter after each. If you want to block #gore, #body horror, and #needles, type the first one, press Enter, type the second, press Enter, and so on. All three will be active as soon as you've entered them.

Blocking tags on mobile devices

The process is nearly identical on the Tumblr mobile app. Open the app and tap the account icon at the bottom right of the screen. Tap Settings, then scroll down to find Filtering. Tap in the Blocked tags field and type the tag you want to block, then tap the checkmark or Done button to confirm.

On mobile, you may need to scroll within the Filtering section to see all your blocked tags if you've blocked many. The field works the same way — one tag per line, no # symbol needed.

What happens when you block a tag by mistake

If you block a tag and then change your mind, you can unblock it just as easily. Go back to Settings, find Filtering, and look at your list of blocked tags. Find the tag you want to unblock and click the X next to it, or tap and hold it on mobile until a delete option appears. The tag will be removed from your blocked list when ready, and posts with that tag will start appearing on your dashboard again.

There's no penalty for blocking and unblocking tags — you can do this as many times as you need. Some people block tags temporarily during stressful news cycles and unblock them later, or block tags while they're working on something and unblock them when they're done.

Blocking variations of the same tag

Tumblr treats tags as exact matches, so #spider and #spiders are two different tags. If you block #spiders but someone posts with #spider or #arachnid, those posts will still appear on your dashboard. You'll need to block each variation separately if you want to filter them all out.

This matters most for tags that people use in different forms. If you're sensitive to content about a particular topic, search for a few common ways people tag it, then block each version. Some people also block common misspellings if they notice them in the wild.

Combining tag blocking with other safety tools

Tag blocking works best alongside other Tumblr safety features. You can block individual users (which prevents them from messaging you and removes their posts from your dashboard), filter specific words in your Safe Mode settings, and use Tumblr's content warnings to hide posts until you choose to view them. None of these tools replaces the others — they work together.

If there's a particular user whose content bothers you, blocking the user is usually more effective than blocking their tags, because it removes all their posts regardless of how they've tagged them. If it's a topic that many people post about, blocking the tag is the right move. If you want to see the content but with a warning first, look for posts that use Tumblr's built-in content warning feature instead.

Frequently Asked Questions

Can I block multiple tags at once?

Yes. Go to Settings, find Filtering, and type each tag you want to block in the Blocked tags field, pressing Enter after each one. You can add as many as you need, and they all take effect when ready.

Will the person who posted something know I blocked their tag?

No. Blocking a tag is invisible to other users. The person who posted the content has no way to know you've blocked that tag, and Tumblr doesn't send them any notification.

What if I block a tag but still see posts with it?

Check that you've spelled the tag exactly as people are using it — Tumblr treats #spider and #spiders as different tags. Also make sure you're looking at your dashboard or search results, not at someone's individual blog page or a direct message, where blocked tags still appear.

Can I block tags that contain spaces or special characters?

Yes. Type the tag exactly as it appears, including spaces and punctuation. For example, if people tag something #mental health, type it that way in your blocked tags field.

Do blocked tags stay blocked if I log out and back in?

Yes. Your blocked tags are saved to your account, so they remain active no matter which device you use or how many times you log out and back in.