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I have an Apache web server that has a sub folder for images. For some reason, a few of the .png files are returned as text/html and not as image/png.

There is nothing indicating a permission problem and the files return with code 200 and with full size. I made sure that image/png is set and even tried forcing it with .htaccess

Any idea where to look next?

Edit: looks like an .htaccess configuration problem on a parent directory.

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2 Answers

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Did you make sure png files are valid image files? If you are on a Linux platform you can try the file command

file somefile.png

That command should return something along the lines of

PNG image data, 318 x 15, 8-bit/color RGB, non-interlaced

You can also try to view the file with a image viewer.

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logo.png: PNG image data, 256 x 256, 8-bit/color RGBA, non-interlaced the same file opens on all windows machines i have. i also made sure it wasnt broken in scp / wget – Oren Nov 20 '11 at 16:20
Did you try different web browsers? Maybe there is a problem with the one you are using? Could you post a link for us to test? – Can Kavaklıoğlu Nov 20 '11 at 16:23
Sorry, cant put a link, but i tried other browsers on other hosts. Looking at the http response i can tell its not a client side problem. – Oren Nov 20 '11 at 16:26
Are you using compression options of Apache? This page httpd.apache.org/docs/2.0/mod/mod_deflate.html indicates a configuration inorder not to compress image files.[page]: – Can Kavaklıoğlu Nov 20 '11 at 16:38
ok, i found the cause. changing the file name did the trick (not every file name i choose work). it must be something in one of the parent directory's .htaccess files Thanks for the help – Oren Nov 20 '11 at 16:57
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Maybe look for .png, .PNG, .pNG and .PNg.

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