Image Formats

  • There are 5 main formats in which to store images. 
  • Each of image file types has their own pros and cons. They were created for specific, yet different, purposes. 
 1. JPEG
  •  JPEG stands for Joint Photographic Experts Group.
  •  File extension is .jpegor .jpg.
  • "Lossy"compression format. Source file is compressed to make small file size with effect on the image quality.
  • JPEG can be mostly preferred while file size is chosen than image quality.


 Best for:
  • Web images, emails, ppts etc as small in size and loads faster.
  • Most cameras store in JPEG format more images can be stored on card.
 Bad for:
  • Line drawings or logos or as compression make them look jagged.
  • If there are images with text don't go for jpeg.
 2. PNG:
  • Stands for Portable Network Graphics. 
  • File extension is .png.
  • "Loseless" compression format. 
  • File size is large.
 Best for:
  • Compress images without losing quality; suitable for text documents. 
 Bad for:
  • Storage of pics on camera because of its large file size.
  • Also does not support animations.
 3. GIF:
  • Stands for Graphics Interchange Format.
  • File extensions is .gif.
  • GIF files are typically small in size and are very portable. 
 Best for:
  • Web graphics and simple animations.
  • Mostly used on web for simple animations.
 Bad for:
  • Photography as gif has limited colors.
  • Bad for printing.
 4. TIFF:
  • Stands for Tagged Image File Format.
  • File extension is .tiff or .tif.
  • These are uncompressed and thus contain lot of detailed image data.
  • File size is large.


 Best for:
  • High quality prints, professional publications, complex imagery.
 Bad for:
  • web images as size is large takes time to load.
  • Most web browsers don't support tiff.