Image format Usages

When it comes to website development, images plays a vital role. And making use of proper image formats is also very important. Here is explanation about which format we need to use and when.


Jpegs are for photos. I see jpegs with text in them occasionally and they just look awful. Text is best for text, otherwise use PNG.
If it's not a photo, but you want a graphic of it, use a PNG. A PNG is almost always smaller than the equivalent gif and will not lose quality like a jpg. A png equivalent of a jpg will typically be a lot larger (assuming it's photorealistic). There may be times where this is still desirable.
PNG does allow for 8-bits of transparency, but if you have to support IE, you'll find that they continually refuse to support that correctly. They do support a single bit of transparency in an 8-bit image (essentially the same as gif) as far as I know. There are also numerous hacks to get 8-bit transparency to work in IE. I've never bothered, myself.
In summary:
  • Photos → jpg
  • !Photos → png
Location: Bangalore, Karnataka, India

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