mod_img - An Apache module for image processing.

What is mod_img?

mod_img is an Apache module for image processing.

It is possible to give the "on the fly" processed image without website author work to web browsers.

Supported methods:

• magnification and reduction
• file type conversion
• trimming

Required environment

• Apache 1.3.x or later (Apache 1.3.26 is tested. Apache2 is not supported.)
• Imlib2 1.0.5 or later (Imlib2 1.0.5 is tested.)

Installation

1. Type `./configure' to create Makefile.
2. Type `make' to compile.
3. Switch root user.
4. Type `make install' to install files.
5. Edit `httpd.conf'.
6. Restart Apache.

Available options in httpd.conf

ImgOutputType

The default output file type.

ImgMaxRatio

The ratio of the image size to permit. The default is 1.0.

ImgWorkDirectory

The directory to use for work files. The default, it's read from environment variables "TMPDIR", "TMP" or "TEMP" or chosen "/tmp".

ImgKeepWorkFiles

Available value is...

On

Keep all work files.

Off

Automatically remove all work files.

The default is On.

Available options in Web browser

Sizes

width=WIDTH

Specify the output image width. ex:

• width=600 => 600 pixels
• width=x0.5 => 0.5 times

height=HEIGHT

Same as with=, but use for image height.

size=SIZE

Specify the manificient of the output image. size=x0.5 is same as width=0.5&height=x0.5

File types

type=MIMETYPE

Specify the output file type. Available file types is...

• image/bmp
• image/gif
• image/jpeg
• image/png
• image/x-portable-anymap
• image/tiff
• image/x-pixmap

Trimming

trim=X,Y,WIDTH,HEIGHT

Specify the output file position. ex: trim=10,20,320,480