code on a jpg image generated dynamically

Question

While I was looking for some info, I came across this image on a forum which i didn't understood how it worked. Its a JPG image which actually tells you your ip address and your browser. I think that maybe it was made by modifying htacess and replacing PHP for JPG, and with PHP generating the image dynamically but I'm not sure about it.

Would this be the way that this works?

Here is the image i saw: http://www.danasoft.com/sig/475388.jpg

Thanks

score 1 · Accepted Answer · edited May 23 '17 at 12:11

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It is nothing but etching text on image. There are several options to do it. Using PHP see here and Java see here

edited May 23 '17 at 12:11

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answered Feb 06 '14 at 05:33

Akshat Singhal

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but the file extension is .jpg , its because htaccess has been modify? – gabriel mellace Feb 06 '14 at 05:38
@gabrielmellace you can have file extension as .jpg or .png or anything else (what the library being used allows) – Akshat Singhal Feb 06 '14 at 05:45

score 1 · Answer 2 · edited May 23 '17 at 11:49

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yes this image is generating dynamically. It collects your info make a string and use some library to generate that image like in Captcha. php has its own library too for this purpose

Click here

edited May 23 '17 at 11:49

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answered Feb 06 '14 at 05:39

Syed Ahmad Khalid

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code on a jpg image generated dynamically

2 Answers2