This is Cottage Windows by KineticKnight, with drastically reduced options for increased performance.

There are three versions:

Version 52: All window types have been removed except single-block square panes, with either plain, quartz, or leaded glass. All wood types are avilable.

Version 286: All window types have been removed except for single-block square panes, with all vanilla glass. All wood types are available.

Version BL: All window types have been removed except for single-block square panes, with all vanilla glass and Bricklayers compatibility. All wood types are available.

Nothing else has been changed. All credits for this amazing mod goes to the original author, KineticKnight. I just really needed a slimmed down version, to save my poor server from imploding. The original mod has around 8888 window variations, not including Bricklayers compatibility (which is over 25,000)! These slimmed down versons reduce those variations to either 793, 286, or 52, depending on your choice of download.

Enjoy, and please remember that this work is entirely the original author's. I just did a quick and dirty prune. 😀

I have marked this compatible with 1.17.9, as I haven't found any issues with using on that version.

Let me know if anything breaks, but I can't promise fixes.