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Understanding Common Image Formats: JPG, GIF, BMP, TIF, PNG, and RAW Explained

This article delves into various common image formats used in digital photography and graphic design. Learn the strengths and weaknesses of formats such as JPG, GIF, BMP, TIF, PNG, and RAW. JPG is favored for digital photos but is lossy, while GIF is excellent for line drawings with no quality loss. BMP and TIF formats store data differently, providing unique benefits for technical applications. Discover how PNG retains image quality without loss, and explore the future of line art in vector formats like SVG, highlighting their advantages in modern design.

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Understanding Common Image Formats: JPG, GIF, BMP, TIF, PNG, and RAW Explained

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Presentation Transcript

  1. Image File Formats

  2. Some Common Image Formats • JPG – Used for most digital photos but “lossy” • GIF – Best for line drawings. 256 colors maximum. No loss • BMP – Bitmap. Every pixel stored individually • TIF – Standard in many technical applications. No loss • PNG – Lossless image format • RAW – Data as captured by digital camera

  3. Test Image (640 x 479 pixels)

  4. Test Image in Various Formats • JPG 67 kb • GIF 185 kb (256 colors, optimized) • BMP 899 kb (640*479*3/1024 = 898.125) • TIF 902 kb • PNG 418 kb • RAW 900 kb

  5. GIF Test Image

  6. GIF Versus JPG • GIF: 11 kb JPG: 78 kb

  7. GIF Versus JPG • For photographic images JPG is better both for quality and file size • For line art GIF is better both for quality and file size • The future of line art is probably in vector file formats like SVG (Scalable Vector Graphics) • VML (Vector Markup Language) is Microsoft backed

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