exif - How to manipulate diverse meta-infomations of image files in PHP -

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there diverse formats add meta-information image (and video) files. every digitalcamera add them fotos. , people don't want them published.

the standards found far are:

  1. exif
  2. iptc-naa
  3. xmp

are there more? (e.g. not image specific, general meta standard, can attached end of every file)

reading information saved, using php seems possible 3 named formats.

but how can data manipulated (changed, added)

how can delete possible meta-data using php? (i.e. infomation not belong image itself)

open , save image gd. should remove meta data because gd lib cannot handle it.

if doesn't cut it, try of


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