If you touch it, it’ll get bigger.
by ‘it’ I mean the thumbnail images in this post
So instead of this
people will see this
If you want to be able to use that functionality it any post (not just text posts) you’ll need to install Missing E, which, despite what Tumblr, Inc. might tell you, will not cause your teeth to rot out and/or hair to grow on your palms. Nor will it ruin your computer.
Go to Missing E settings, then choose “Post Settings” and then scroll down until you see this:
and make sure the box is checked.