When designing new themes or templates, you definitely built up the HTML first and afterwards implement it in your custom CMS. But, in this process of designing, you need some dummy content to fill up your page to see how it looks like. Fixie.js is an open source tool that can help you with this, automatically adding filler content to your HTML documents.
Using Fixie.js, filling up HTML pages is easy, succinct making everything faster in the process of testing your design. By interpreting your HTML5 tags, Fixie will automatically add the right type of content in the right place. Fixie adds heading content, paragraphs, links, images, sections and many more.