This isn’t a programming tip, but since we discussed photoshop quite a few times before
it’s probably an important subject. Especially because we made this exact mistake in those tutorials and
I’ve spent the better part of the day tracking this with no result…​

I’ve worked on extracting UI’s from PSD files for a while now and I was on my way to build a new UI when suddenly
I noticed my theme file was HUGE. Not just “big”, HUGE.

Looking at the images I’ve noticed they were ridiculously big so I started doing the typical things (bluring, scaling,
reducing quality) all of which didn’t work until I was able to come up with an odd workaround by saving as
JPEG2000 and then resaving as a regular file.

Then I noticed that this didn’t just impact JPEG files…​ PNG files that contained nothing other than black and white
pixels were over 800kb in size!

That’s when the hex editor came up and showed that something was really broken, the file was filled with gibberish
meta-data that I was able to find in the photoshop UI but there is no place to edit this data.

I was eventually able to find this and several other sources that confirmed
that this behavior is “by design” which is insane…​ I found no way to remove the meta-data or edit it after the fact.
Even OptiPNG wouldn’t remove it!

So the solution is simple if a bit obtuse, when you are ready to export an image always use File → Export &
never use File → Save As. Notice that this only impacts regular images. Multi-Images are automatically
converted and are not impacted as a result.