Table of Contents
A package to convert every image stored and uploaded to a Plone site to PNG format.
If you are concerned about images format patent issues this package is for you.
Portable Network Graphics (PNG) is a bitmapped image format that employs lossless data compression. PNG was created to improve upon and replace GIF (Graphics Interchange Format) as an image-file format not requiring a patent license.
Even as the JPEG compression used in various image file formats has been subject to a number of patent issues by well-known patent trolls of the industry for many years, there is currently no patent-free alternative for these formats (WebP has been available for some time, but is currently only supported by Google Chrome and Opera web browsers).
The package includes a handy method to migrate images, sometimes prefered for running long processes.
Here is a small resume including just the downsides of PNG against GIF and JPEG; you can find the complete comparison in the Wikipedia:
To enable this product in a buildout-based installation:
Edit your buildout.cfg and add openmultimedia.pngwatchdog to the list of eggs to install:
[buildout] ... eggs = openmultimedia.pngwatchdog
After updating the configuration you need to run ”bin/buildout”, which will take care of updating your system.
Go to the ‘Site Setup’ page in a Plone site and click on the ‘Add-ons’ link.
Check the box next to openmultimedia.pngwatchdog and click the ‘Activate’ button.
Note: You may have to empty your browser cache and save your resource registries in order to see the effects of the product installation.
TODO: Figure out how to actually get changelog content.
Changelog content for this version goes here.