LocalMark Studio is a local-first Markdown editor that operates entirely within your browser, storing all files locally using IndexedDB. This approach ensures your notes remain fast, private, and available even without an internet connection. The editor provides a clean writing environment focused on productivity.

The editor includes a real file tree system allowing you to create folders and files, rename them, and delete items as needed. It features intelligent paste functionality that converts rich HTML into clean Markdown automatically. A split-pane live preview shows your rendered content alongside the Markdown source with scroll synchronization.

Additional capabilities include search and replace across files, support for adding tags and custom key-value metadata per file, and optional toggles for Mermaid diagrams and KaTeX math rendering. The command palette provides quick access to toggle previews, themes, and Markdown features.

The workflow involves creating files and folders to organize notes, writing content using the editor's features, and exporting finished work in various formats. Files can be imported as Markdown, text, or HTML (which converts to Markdown), and exported as Markdown, styled HTML, PDF, or JSON metadata.

This editor is designed for users who need a fast, private writing environment for drafts, notes, and other writing projects. It requires no accounts and works entirely locally in the browser.