Markdown Editor with Preview

Technical documentation and web content creation often require a lightweight bridge between human-readable text and browser-ready markup. This tool functions as a client-side parser that translates Markdown syntax into valid HTML structure. Unlike rich text editors (WYSIWYG), working with raw Markdown grants the user absolute control over the document hierarchy and semantics.

Accuracy in syntax parsing is critical when generating generic content (content that must be portable between different systems). A missing closing tag or an incorrect list indentation can break the rendering pipeline in static site generators like Jekyll or Hugo. This application utilizes a robust parsing engine to handle standard syntax elements including headers, lists, code blocks, and tables. The state is preserved locally (Local Storage), protecting against data loss during accidental navigation or browser crashes.

This editor is designed for developers writing README.md files, technical writers drafting documentation, and copywriters organizing web content. It eliminates the need for server-side processing. The conversion occurs entirely within the user's browser environment using JavaScript string manipulation and Regular Expressions.

The efficiency of a Markdown parser (regular expression based) often depends on the complexity of the input string length L. The parsing operation can be approximated as a series of replacements.

Where T_dom is the time required for the browser to repaint the DOM tree. The maximum storage capacity for local drafts is determined by the browser's Local Storage limit, typically around 5MB per origin.