you mean aside from the fact that it requires downloading a huge multi-purpose program that starts at $21/mo which is built for significantly more than just those features and the user must use a lot more brain space for what they want to be a simple task?

Do it for free with Photopea.

And this would be just about one of the easiest "Photoshop tutorials" there is to follow.

Photopea is nice, but their website is not friendly. I could see why people would prefer to pay and have a simple website to use.

Or gimp. "Photoshop" is the all encompassing term for these editors. This task is actually quite trivial, but there is a bit of a learning curve for someone who knows absolutely nothing about photo editing.

For a Linux user, you can already build such a system yourself quite trivially by using PHP's ImageMagick extension to modify the uploaded image file.

I wonder can ImageMagick give you the "progressive linear blur" (or whatever you want to call it) that emulates depth of field?

Might as well ray trace it....

My comment was mostly tongue-in-cheek. mih in a sibling thread added a link to actually useful IM scripts however, one of which supports variable blur using a mask (scroll below the table and parameters for example pictures): http://www.fmwconcepts.com/imagemagick/variableblur/index.ph...

photopea.com

That was my thought as well and you can go even further by just making it a script. Which begs the question: why is this a subscription service and not the script.