You can download the patch here by clicking on the green download button.
enable_screenshots_patch_v1.0.215[gamebanana.com]

This download contains two files:
DeltaPatcher.exe: You will use this to apply the patch
enable_screenshots.xdelta: This is the patch file itself

First, unzip the zipped file. Once you do that, open DeltaPatcher.exe.


Click the folder next to Original File. Then go to your Pizza Tower folder, and select the data.win file. Then click open.

Next, click the folder next to XDelta patch. Go to where you extracted the zipped file and select enable_screenshots.xdelta. Then click open.

Finally, click apply patch.

If you see "Patch successfully applied", you can now play Pizza Tower with the ability to screenshot!
If you get a checksum error after applying the patch, it's probably because it's outdated. I'll try to update it as frequently as I can. This also means that you will have to reapply the patch every time the game updates, but that shouldn't be too big of a hassle.