I managed to recreate almost the same screenshot in 5kb (and with much less compression artifacts!)
before adding the text and circles it was only 1.6kb
it’s a case where jpeg compression ironically results in the picture getting 60x larger and more blurry because everyone recompresses the images and jpeg is designed for large photos and not pixel art
SMB had game file size limitations in the dozens of kilobytes range.
For comparison, that screenshot is 342kb, and Super Mario Bros is 40kb. The screenshot is more than 8.5 times bigger than the game it comes from.
I managed to recreate almost the same screenshot in 5kb (and with much less compression artifacts!)
before adding the text and circles it was only 1.6kb
it’s a case where jpeg compression ironically results in the picture getting 60x larger and more blurry because everyone recompresses the images and jpeg is designed for large photos and not pixel art