Spec 1.2 · Representing images
Pixel Decoder
Turn binary into pictures, pictures into binary, then work out the file size. 8 images per game.
🏆 Best 0
Image 1/8
Score 0
Colour depth 1 bit
How bitmap images work
- A bitmap image is a grid of pixels. Each pixel's colour is stored as a binary number.
- Colour depth is the number of bits per pixel. 1 bit gives 2 colours, 2 bits give 4 colours, n bits give 2ⁿ colours.
- Resolution is the number of pixels (width × height). More pixels or a bigger colour depth means better quality but a bigger file.
- File size in bits = width × height × colour depth. Divide by 8 for bytes.
- Metadata (width, height, colour depth…) is stored with the image so it can be displayed correctly.