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A daemon to automatically handle image optimization

Project description

Imagy - make your website's images load upto 50% faster
===============

Imagy is a file daemon, that watches your website's media root (where your images are stored) and automatically optimizes image files that are created or modified within.

Imagy uses *lossless compression*, so your users never have to load unnecessary bytes. Your images look the same, but load faster.

A lot of work has gone into making it ``set-and-forget``. Instead of having to code up deamons, file watches and handle different file formats on your own, Imagy does all the work for you. All you need to do is
::

imagy /awesome/images/

and Imagy will start watching the directory ``/awesome/images/`` and all its subdirectories for images that get created or modified.

The algorithms used are stable (don't further modify files after multiple invocations), however to make trying Imagy out as easy as possible, the default is to keep original files around for later reversal.

If you wish to stop using Imagy, run ``imagy --revert`` which will move all original images back to their initial location

If you have (rightfully) come to the conclusion that you don't really need to keep originals around, set ``KEEP_ORIGINALS`` in ``config.py`` to ``False``. If you want to delete all already stored originals run ``imagy --deloriginals``.


Getting Started
-----------------


Imagy depends on a bunch of binaries (listed at the bottom) for image optimization. On Ubuntu (tested on 11.10) you can install everything with:

::

sudo apt-get install pngnq pngcrush imagemagick gifsicle libjpeg-progs

pip install imagy


That's it. Try it by running ``imagy``.

If you don't have pip installed, you can find more information here: http://www.pip-installer.org/en/latest/installing.html#prerequisites


Example Usage
-----------------

When starting out you can tell Imagy to optimize (initialize) a directory of new images:

::

$ ll img
total 52K
-rw-rw-r-- 1 ddd ddd 50K 2012-06-23 14:45 beach.jpg
$ imagy --init img
2012-06-23 14:48:27,133 INFO Imagy started
2012-06-23 14:48:27,133 INFO Storing settings in /home/ddd/.imagy, you can modify this path in config.py under STORE_PATH
2012-06-23 14:48:27,134 INFO looking for not yet optimized files
2012-06-23 14:48:27,134 INFO Compressing file /home/ddd/img/beach.jpg
$ ll img
total 80K
-rw-rw-r-- 1 ddd ddd 25K 2012-06-23 14:48 beach.jpg
-rw-rw-r-- 1 ddd ddd 50K 2012-06-23 14:48 beach-original.jpg

Afterwards you can let imagy start watching the directory (and all directories underneath it) by running

::

$ imagy img
2012-06-23 14:52:24,794 INFO Imagy started
2012-06-23 14:52:24,794 INFO Storing settings in /home/ddd/.imagy, you can modify this path in config.py under STORE_PATH
2012-06-23 14:52:24,795 WARNING watching /home/ddd/img
2012-06-23 14:52:24,796 INFO waiting for files
2012-06-23 14:52:24,796 INFO Ctrl-C to quit


Credits
-----------------

In the background Imagy uses the awesome library ``smush.py`` which exposes a general interface to handle the various file types.



Dependencies
-----------------

- imagemagick
- gifsicle
- jpegtran (on ubuntu in libjpeg-progs)
- pngcrush
- pngnq

Project details


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