I was editing an article on Wikipedia yesterday. Then, (I think) I might have pressed something on my laptop's keyboard by accident, and now, all the text in Wikipedia's edit boxed have gotten much, much smaller:



I think it affected the text of articles too (non edit).

Is there a way to undo this?

Try going to View > Zoom > Reset in your web browser. You can do the same using your mouse scroller while pressing the control key. If these don't solve your problem, report back your web browser and version.

It worked, thank you!