STK
StackEdit
Full-featured, open-source in-browser Markdown editor with real-time sync.
Open StackEdit
100% Free and Open Source.
Comprehensive Overview
What is StackEdit?
StackEdit provides an all-in-one Markdown writing workstation. It features a split-pane layout where your Markdown source and rendered HTML preview scroll in perfect synchronization. It supports GitHub Flavored Markdown, Mermaid flowchart diagrams, KaTeX mathematical formulas, and can sync notes directly to GitHub, GitLab, Google Drive, and Dropbox.
Technical Specifications
Pricing ModelOpen Source
Requires SignupNo (Instant)
Execution RuntimeClient-Side (In-Browser)
PlatformsWeb
DeveloperBenoit Schweblin
Last Verified2026-08-25
Supported Formats:
MDGFMHTMLPDF
Editorial Assessment
Pros & Strengths
- Completely free, open source, with zero accounts required to start writing
- Offline support ensures your notes are never lost
- Handles complex LaTeX formulas and code blocks smoothly
Limitations
- Sync configuration with third-party providers requires OAuth setup