What Is Markdown and Why Do Developers and Writers Use It?

Markdown is a lightweight markup language created by John Gruber and Aaron Swartz in 2004, designed to be readable as plain text while converting cleanly to formatted HTML. Today it's the de facto standard for technical documentation, GitHub READMEs, developer blogs, and content platforms worldwide. Understanding Markdown unlocks enormous productivity — you write formatted content faster in plain text than in any rich text editor. WikiPlus Markdown Preview at wikiplus.co lets you see exactly how Markdown renders, running entirely in your browser with no data uploaded to a server. Whether you're new to Markdown or looking to deepen your understanding, this guide explains the what, why, and how.