PHP - changing metadata of a JPEG

Question

Or other image file. Can this be done in a (fairly) simple way using PHP?

I'm coding a website that will allow users to upload photos, but I know JPEGs are notorious for their metadata and ideally I'd like to strip all images uploaded of metadata, either by removal or replacement with junk text.

http://stackoverflow.com/questions/5384962/writing-exif-data-in-php — Brewal, Jun 19 '13 at 13:23

score 2 · Answer 1 · answered Jun 19 '13 at 13:29

2

If you're just looking to strip most of the exif data quickly and easily without using a library to specifically write it, you can 'resave' the image using gd:

$file = 'myjpg.jpg';
$im = imagecreatefromjpeg($file);
imagejpeg($im, 'myjpg2.jpg');

Maybe not the best/prettiest solution, but it accomplishes what you want without adding additional libraries.

answered Jun 19 '13 at 13:29

keithhatfield

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+1 Not 100% *related* to the question, but a nice way to get rid off exif data – mate64 Jun 19 '13 at 13:30

score 1 · Answer 2 · answered Jun 19 '13 at 13:22

1

Take a look at this extension for PHP: http://lsolesen.github.io/pel/

answered Jun 19 '13 at 13:22

Rob

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score -1 · Answer 3 · answered Jun 19 '13 at 13:25

-1

i use getID3 library for this. it makes it quite easy

http://getid3.sourceforge.net/

it works with al lot of file extentions for a demo click here: demo

answered Jun 19 '13 at 13:25

This_is_me

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No, this won't do - the OP is asking to CHANGE the metadata not READ it, which is what getID3 does – Filippos Karapetis Jun 19 '13 at 13:28

PHP - changing metadata of a JPEG

3 Answers3