Hi Webdongle
Thanks for uploading the new images!
Looks like you got the hang of it. The 670px limitation is for Help Screen images only, and that statement is now out of date. Well, kind of out of date. Mark is using selenium to generate the images automatically and I am bulk uploading them with a script. The short of it, we can update all the main Help screen images in a few hours, not months!
Common sense should be the rule of thumb. An image of 2000px x 2500px is unnecessary. It actually might fail if you try to force a resize. Imagick uses a lot of memory to resize images. The docs template automatically re-sizes the images anyway with a width="100%" height="auto". 900 or 1000px of width should be just fine.
I see you figured out how to upload a newer version of the image. Just make it the size that looks the best and you can omit the |670px from the image call in the article.
I am working on a how to upload help, the guidelines page to image naming, etc. right now.
Thanks again
Tom