Allow more file types to Magento.
I wanted to add a PDF file to the product description but Magento just allow image file types.
Let's get started.
Look for the file: /app/code/Core/Mage/Cms/etc/config.xml
You should create the same folder structure inside /app/local/...
That's the way to make the change upgrade proof. But I did and didn't work 🙁
Add the extensions
Open the config.xml I mentioned above and around the line 100 you will find something like this:
Please notice I added <pdf>1</pdf> to the allowed extensions.
After uploading the file refresh the Magento Cache and also try to log out from the Magento Admin panel.