- Log into your Tumblr account and go to your page (e.g. YourSite.tumblr.com).
- Click the “Edit Theme” button at the top right of the page.
- Click “Edit HTML” at the top left.
- Add your Back to Top Button code before the closing </body> tag.
- Save changes.
That's it! Now just make sure you have enough content so when you scroll down you can see the return button appear.
Want to add a back to top button to your Wordpress site? Learn how here.