I often add images to my WordPress posts — not so much here, but in the MacTips archive and on my Oddity59 personal blog. From time to time I wonder just how big the image thumbnails are, and occasionally I even ponder how to go about changing that thumbnail size. Dagon Design has the answer.
One question I get asked quite often is how to change the default size of the thumbnails that WordPress creates when you upload an image. It is actually quite easy to change — it just requires modification of one WordPress file. When WordPress 2.1 was released, it changed the way this was done, so I have included instructions below for both WordPress 2.2/2.1 and pre-2.1.
[Mentioned on the Wise Women mailing list.]