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"Free," was the answer that came back, loud and laughing and breathless. "I feel free." − art inspired by a scene from drarry fic Escapism by @alxmeg Edit: RELINKED! this amazing fic got reuploaded!! :D (2026/2/04)

login in on desktop, it's not available on mobile yet

click "Account"

click on your blog

go to "Blog Settings"

go to "Visibility"

Scroll down to the bottom option

turn the toggle ON, not off

AI companies are acquiring content across the internet for a variety of purposes in all sorts of ways. There are currently very few regulations giving individuals control over how their content is used by AI platforms. Proposed regulations around the world, like the European Union’s AI Act, would give individuals more control over whether and how their content is utilized by this emerging technology. We support this right regardless of geographic location, so we’re releasing a toggle to opt out of sharing content from your public blogs with third parties, including AI platforms that use this content for model training. We’re also working with partners to ensure you have as much control as possible regarding what content is used.

Here are the important details:

We already discourage AI crawlers from gathering content from Tumblr and will continue to do so, save for those with which we partner. 

We want to represent all of you on Tumblr and ensure that protections are in place for how your content is used. We are committed to making sure our partners respect those decisions.

To opt out of sharing your public blogs’ content with third parties, visit each of your public blogs’ blog settings via the web interface and toggle on the “Prevent third-party sharing” option. 

For instructions on how to opt out using the latest version of the app, please visit this Help Center doc. 

Please note: If you’ve already chosen to discourage search crawling of your blog in your settings, we’ve automatically enabled the “Prevent third-party sharing” option.

unfortunately, a lot of the userbase won't opt out. those who don't see this post, those who have posted to tumblr but don't anymore, users on older versions of the app who forget to opt out next time they're on desktop, etc. the point of making it opt-out is to take advantage of people who wouldn't have opted in but don't/can't opt out in time. automatically opting out people who have discouraged search crawling is a gesture that helps Tumblr look more kind, but from the fact that everyone else has to manually opt out, Tumblr is definitely not looking benevolent.

I wonder, will Tumblr/Automattic be selling images from deactivated blogs? I assume deactivated blogs can't opt out.

when will they start selling this data? Is it already too late to keep them from selling every image you've posted before you opted out?

and if they're especially malicious, I wonder if they could get away with saying "this image is from a blog that's opted out, but it was reblogged by a blog that hasn't opted out, so we're selling the image that's on that non-opted-out blog."