Huge screenshots file size savings using oxipng

[Psyhackological]

The issue

cosmic-screenshot produces large screenshots file sizes.

The solution / inspiration

Maybe cosmic-screenshot can learn a thing or two from oxipng?

Logs

I used oxipng to decrease screenshots size.

oxipng -o 6 --strip safe *.png
Processing: screenshot-2024-08-10-11-26-24.png
Processing: screenshot-2024-08-14-18-13-09.png
Processing: screenshot-2024-08-10-11-39-04.png
Processing: screenshot-2024-08-12-18-18-04.png
Processing: screenshot-2024-08-14-18-13-39.png
Processing: screenshot-2024-08-10-11-39-15.png
Processing: screenshot-2024-08-14-22-34-17.png
Processing: screenshot-2024-08-10-11-39-00.png
Processing: screenshot-2024-08-10-12-01-03.png
Processing: screenshot-2024-08-14-22-34-33.png
Processing: screenshot-2024-08-15-10-01-21.png
Processing: screenshot-2024-08-15-10-00-14.png
Processing: screenshot-2024-08-15-10-00-24.png
Processing: Screenshot from 2024-07-16 16-55-34.png
Processing: screenshot-2024-08-12-18-19-36.png
screenshot-2024-08-12-18-18-04.png: Invalid PNG header detected
Processing: screenshot-2024-08-14-17-51-10.png
Processing: screenshot-2024-08-14-18-13-33.png
Processing: screenshot-2024-08-12-19-57-11.png
Processing: screenshot-2024-08-12-18-19-01.png
Processing: screenshot-2024-08-15-09-57-49.png
193526 bytes (70.86% smaller): screenshot-2024-08-12-18-19-01.png
9320462 bytes (28.97% smaller): screenshot-2024-08-15-10-00-24.png
1050413 bytes (61.78% smaller): screenshot-2024-08-12-19-57-11.png
39258 bytes (69.48% smaller): screenshot-2024-08-14-22-34-17.png
6334815 bytes (33.39% smaller): screenshot-2024-08-10-11-39-15.png
594173 bytes (59.27% smaller): screenshot-2024-08-14-18-13-09.png
978770 bytes (47.09% smaller): screenshot-2024-08-10-12-01-03.png
7799865 bytes (30.36% smaller): screenshot-2024-08-10-11-39-04.png
9409430 bytes (27.85% smaller): screenshot-2024-08-15-10-00-14.png
250548 bytes (63.29% smaller): screenshot-2024-08-14-17-51-10.png
46095 bytes (65.94% smaller): screenshot-2024-08-10-11-39-00.png
193263 bytes (72.54% smaller): screenshot-2024-08-15-10-01-21.png
371259 bytes (30.79% smaller): Screenshot from 2024-07-16 16-55-34.png
607074 bytes (52.83% smaller): screenshot-2024-08-12-18-19-36.png
250853 bytes (63.28% smaller): screenshot-2024-08-14-18-13-33.png
250734 bytes (63.25% smaller): screenshot-2024-08-14-18-13-39.png
75943 bytes (69.00% smaller): screenshot-2024-08-14-22-34-33.png
5822895 bytes (28.43% smaller): screenshot-2024-08-10-11-26-24.png
2159403 bytes (39.33% smaller): screenshot-2024-08-15-09-57-49.png

[Psyhackological]

I think it's mostly to do with repeated colours. When I screenshot my cosmic settings, there are so few solid colours, but it gets it raw, and I easily get around 2/3 smaller file size.