One of the common needs of most of the Bloggers is to be able to easily format their Blog posts without requiring much knowledge of HTML. To meet this need, Blogging platforms support WYSIWYG editors of some sort or another, either by default or with the help of plug-ins.
Nobody wants their Blog post to look like a plain chunk of text. As a Blogger you would naturally want to add images, if not in every, at least in some of your Blog posts.
RAR is a file format which is used to compress and archive multiple files together. Let's see one of its use cases. Say, for example, you want to send two PDF ebooks and an MP3 soundtrack to your friend using email.
SVG (Scalable Vector Graphics), as everybody knows, is a popular vector graphics format. Vector graphics are different from raster graphics such as PNG, JPG, etc. When you try to zoom into a raster image, it looses its quality.
Databases are all around us. Almost every Blog, Website, E-mail services, E-commerce sites, and Cloud storage system needs a database to store data. Drupal, WordPress, Joomla, Ghost, osCommerce, OwnCloud, to name a few, need a database to store configuration and data.
