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image file header info

Sesh
Sesh asked
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Last Modified: 2013-11-19
i need to be able to recognise an image and process it accordingly by looking at the header information in the file.

therefore, i need to know the exact format of each image file header... is this information available in a simple format anywhere??

a text file outlining the exact byte format would be great.

i only need the format the header of jpg, bmp, pcx and gif files (all types).

thanx
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Thanks for posting the links.  They are helpful

Author

Commented:
thankyou for your answers... but... is there any more complete definitions on the JPEG header standard??  i looked at http://www.obrador.com/essentialjpeg/HeaderInfo.htm and it didnt cover a lot of the headers adobe uses when creating jpgs...

i just need to create a program that extracts the width and height details from image files (jpgs in particular)
jpeg and some other formats can be found at my website:

http://www.cubic.org/source/archive/fileform/graphic/

happy coding,
  Nils

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