Conrad Parker
|
Conrad Parker |
FastPhoto |
[ Introduction | Usage | Download | Development | License | Contact ]
Latest version: 0.9.0
FastPhoto is a high-performance rescaling tool for photographic images.
It can be installed on a web server as a handler for files of type
image/jpeg, providing fast server-side resizing with (optional)
transparent caching. It can also be used as a
commandline application.
FastPhoto uses Epeg, a high-performance JPEG resizing library which decodes only the DCT coefficients needed to reconstruct an image of the desired size, and avoids colorspace conversions where possible.
FastPhoto preserves the aspect of the original file unless both width and height options are specified.
When FastPhoto is installed on a webserver, any URLs to JPEG files will automagically accept rescaling parameters such as:
<img src="myphoto.jpg&scale=20%"/>
or
<img src="myphoto.jpg&width=120" width="120"/>
This makes it trivial to generate web pages containing thumbnails of full-sized photos:
<a href="myphoto.jpg"><img src="myphoto.jpg&width=120" width="120"/></a>
With FastPhoto installed on a web server, a photo gallery application does not need to worry about generating thumbnails; it need only generate the HTML necessary to view and navigate images. The required thumbnails will be generated on demand, and popular thumbnails will be transparently cached on disk.
The following URL query parameters are available:
| width=... | Image width (pixels) |
|---|---|
| w=... | |
| height=... | Image height (pixels) |
| h=... | |
| scale=... | Scaling (percentage) |
| s=... | |
| quality=... | Compression quality (percentage) |
| q=... | |
| gray | Convert to grayscale |
| grey | |
These may be used in combination, eg:
<img src="myphoto.jpg?width=120&quality=60&gray" width="120">
If only one of width or height is specified,
the aspect ratio of the image is preserved.
If scale is specified, it overrides the value of
width or height.
The following configuration for Apache httpd will enable FastPhoto. As with most Apache directives, this may of course be restricted to particular Directories or Locations:
ScriptAlias /fastphoto /usr/local/bin/fastphoto Action image/jpeg /fastphoto
To enable caching, create a directory
/var/cache/fastphoto
and make it writeable by the web server process.
FastPhoto generates Content-Length and
Last-Modified HTTP headers, and responds correctly to
If-Modified-Since conditional GET requests.
FastPhoto can also be invoked from the commandline, as fastphoto.
Its options are similar to the URL query parameters;
fastphoto --help provides usage information.
For complete details, see the fastphoto man page.
FastPhoto is distributed in source form here
(fastphoto-0.9.0.tar.gz).
FastPhoto is maintained in git at
http://github.com/kfish/fastphoto:
Permission to use, copy, modify, distribute, and sell this software and
its documentation for any purpose is hereby granted without fee, provided
that the above copyright notice appear in all copies and that both that
copyright notice and this permission notice appear in supporting
documentation. No representations are made about the suitability of this
software for any purpose. It is provided "as is" without express or
implied warranty.
Please direct any queries, bug reports etc. about FastPhoto to the author,
Conrad Parker conrad@vergenet.net .
Copyright © 1995-2010 Conrad Parker <conrad@vergenet.net>.
Last modified Sat Apr 17 2010Download
Development
git clone git://github.com/kfish/fastphoto.git
License
Copyright (C) 2006 Conrad Parker <conrad@vergenet.net>
Contact