LocalMark Studio is a local-first Markdown editor designed for speed and privacy. It provides a clean writing environment where all files are stored locally in your browser using IndexedDB, ensuring your notes remain fast and private without requiring any accounts.

The editor includes a real file tree for creating folders and files with rename and delete capabilities, along with search and replace functionality across files. It features intelligent paste that converts rich HTML to clean Markdown, a split-pane live preview with scroll sync, and support for Mermaid diagrams and KaTeX math rendering. Users can import Markdown, text, or HTML files and export documents as Markdown, styled HTML, PDF, or JSON metadata.

The application operates entirely locally in the browser, leveraging IndexedDB for storage to keep documents available even without an internet connection. This local-first approach eliminates the need for cloud services or user accounts, focusing on immediate access and data privacy.

Benefits include offline availability, fast performance due to local storage, and privacy protection since files never leave your browser. Use cases encompass drafting notes, organizing projects with nested folders, converting HTML to Markdown, and exporting content in multiple formats for sharing or publishing.

Target users are individuals needing a private, fast Markdown editor for notes and drafts, with integrations supporting Mermaid for diagrams and KaTeX for mathematical equations. Technical details highlight the use of IndexedDB for local storage and the ability to work offline.