Raster & Vector Academy
Learn how pictures are stored, scaled and squeezed, one bite-sized lesson at a time.
Learn how pictures are stored, scaled and squeezed, one bite-sized lesson at a time.
Module 3
An audit of the media assets used in the lessons.
| Asset Name & Format | Original Size → Compressed | Color Depth / Quantization | Compression Algorithm |
|---|---|---|---|
| sample-photo.jpg JPEG |
1,688 KB → 42 KB | 24-bit TrueColor (8 bits × 3 channels) | DCT + Huffman (lossy) |
| sample-photo.webp WebP |
1,688 KB → 8.7 KB | 24-bit TrueColor (8 bits × 3 channels) | VP8 block pred. (lossy) |
| sample-logo.png PNG (RGBA) |
625 KB → 10.5 KB | 32-bit RGBA (8 bits × 4 channels) | Deflate (lossless) |
| sample-logo-indexed.png PNG (palette) |
625 KB → 6.1 KB | 8-bit indexed (64-colour palette) | Deflate (lossless) + quantization |
| sample-vector.svg SVG |
N/A → 0.8 KB | Vector (resolution independent) | XML text (paths) |
Original sizes are raw uncompressed pixel data (width × height × bytes per pixel). Compressed sizes measured on disk. 1 KB = 1,024 bytes.