Window photograph derivatives — cropped, resized and alpha-masked; no painted/generated window details.

File:Fischerkirche (window), Born a. Darß.jpg
Author: Radomianin
License: CC BY-SA 4.0
License URL: https://creativecommons.org/licenses/by-sa/4.0
Source: https://commons.wikimedia.org/?curid=138239479
Original image: https://upload.wikimedia.org/wikipedia/commons/1/17/Fischerkirche_%28window%29%2C_Born_a._Dar%C3%9F.jpg

File:Wooden house (window shutters), Riga.jpg
Author: Photograph:  Radomianin
License: Public domain
License URL: https://creativecommons.org/publicdomain/mark/1.0/
Source: https://commons.wikimedia.org/?curid=163441010
Original image: https://upload.wikimedia.org/wikipedia/commons/4/4d/Wooden_house_%28window_shutters%29%2C_Riga.jpg

File:Old Window At Hutch Commons - Flickr - frozenchipmunk.jpg
Author: Sharat Ganapati
License: CC BY 2.0
License URL: https://creativecommons.org/licenses/by/2.0
Source: https://commons.wikimedia.org/?curid=91797345
Original image: https://upload.wikimedia.org/wikipedia/commons/0/07/Old_Window_At_Hutch_Commons_-_Flickr_-_frozenchipmunk.jpg

File:Window of the Saint Faith Church in Montrozier.jpg
Author: Krzysztof Golik
License: CC BY-SA 4.0
License URL: https://creativecommons.org/licenses/by-sa/4.0
Source: https://commons.wikimedia.org/?curid=59997166
Original image: https://upload.wikimedia.org/wikipedia/commons/9/90/Window_of_the_Saint_Faith_Church_in_Montrozier.jpg