Image File Formats

1. PNG

ID: 589b5025-b95f-4271-806b-e6960c4fb0a0
CREATED: <2025-05-05 Mon 18:16>

[2025-05-05 Mon 18:17] – wiki [2025-07-18 Fri 23:31] – spec

Portable Network Graphics, developed as an improvement to GIF.

2. GIF

ID: 9fbe4894-4557-46c4-b602-99823bd2ea66
CREATED: <2025-05-05 Mon 18:17>

[2025-05-05 Mon 18:18] – wiki [2025-07-18 Fri 23:32] – spec

jiffy

3. JPG

ID: ee2a3b64-3a16-4056-a6b4-2514495f7ccb
CREATED: <2025-07-18 Fri 23:38>
AKA: JPEG

[2025-07-18 Fri 23:39] – JPEG - JPEG 1 [2025-07-18 Fri 23:39] – The JPEG standard (ISO/IEC 10918-1) [2025-07-18 Fri 23:46] <- libjpeg-turbo

  • JPEG = Joint Photographic Experts Group
  • Developed in 1992 by the ISO
  • True color (up to 24 bits/pixel) and grayscale (up to 8 bits/pixel) images
  • Eligible compression quality between
  • Visually lossless reconstructions of color images for compression ratios about bits/pixel (bpp)
  • Based on the Discrete Cosine Transform (DCT)
  • Several working modes: lossy, lossless and hierarchical