AI-TOL

Markdown Editor

Write and preview Markdown in real-time. Supports GFM, syntax highlighting, export to HTML and PDF. Free online Markdown editor with dark mode.

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Frequently Asked Questions

Quick answers to common questions
What Markdown syntax does this editor support and what makes it different?

Our editor supports GitHub Flavored Markdown (GFM), the industry standard used by GitHub, GitLab, and many other platforms. Beyond basic Markdown, GFM adds tables, task lists with [ ] and [x], strikethrough text with ~~text~~, autolinks for URLs, and fenced code blocks with ```language. It also supports syntax highlighting for 100+ programming languages using highlight.js. This makes our editor perfect for writing technical documentation, README files, API documentation, and code-heavy content while ensuring compatibility with most platforms that support Markdown.

How do I create different text formatting in Markdown?

Markdown uses simple punctuation marks for formatting: **bold** with double asterisks or double underscores (__bold__), *italic* with single asterisks or single underscores (_italic_), and ***bold italic*** by combining them. Create headings with # (H1), ## (H2), ### (H3), etc. Create links with [text](url) format and images with ![alt text](image url). Create lists with - or * for unordered lists and 1. for ordered lists. Use > for blockquotes and --- for horizontal rules. All these elements preview in real-time as you type.

Can I export my Markdown to other formats and how?

Yes! Multiple export options are available: 1) Copy as Markdown - preserves source for further editing. 2) Copy as HTML - get the rendered HTML code for websites. 3) Download as .md file - save your work locally. 4) Download as .html file - get a standalone HTML page. 5) Print/PDF - use browser print to save as PDF. The HTML export includes all formatting, syntax highlighting, and is ready to paste into any website or content management system.

Is my document saved automatically and how can I prevent data loss?

Documents are NOT automatically saved to ensure privacy - all content stays in your browser's memory. To prevent data loss: 1) Copy your work frequently using the copy button. 2) Download your document as .md file periodically. 3) Use browser extensions that save form data. 4) Consider drafting in a local text editor first. The privacy-first approach means your content never leaves your device, but it also means you must manually save before closing the tab.

Does the editor support code blocks and syntax highlighting?

Yes! Full code block support with syntax highlighting for 100+ languages. Use fenced code blocks with triple backticks and specify the language: ```javascript for JS, ```python for Python, ```html for HTML, etc. The editor supports inline code with single backticks `code`, multi-line code blocks, syntax highlighting with proper colors, line numbers (in display), and copy code button. Supported languages include JavaScript, TypeScript, Python, Java, C++, Go, Rust, HTML, CSS, SQL, Bash, PowerShell, and many more.

Can I use the editor offline and does it require internet?

Yes! Once the page is initially loaded, the editor works completely offline. All Markdown parsing, HTML rendering, and export functionality happens client-side using JavaScript. No internet connection is required for writing, previewing, or exporting. This makes it perfect for: working during travel, writing in areas with poor connectivity, drafting sensitive content offline, and ensuring maximum privacy. The only requirement is loading the page initially - after that, you're fully offline-capable.

How do I create tables and complex structures in Markdown?

GitHub Flavored Markdown supports tables using | separators: | Header 1 | Header 2 | | --- | --- | | Cell 1 | Cell 2 |. Alignment can be specified with :--- (left), :---: (center), ---: (right). For task lists, use - [ ] for unchecked and - [x] for checked items. Create nested lists by indenting with 2-4 spaces. Use footnotes with [^1] and [^1]: Reference text. Combine these features to create complex documents like technical specs, project plans, and documentation with rich structure.

What are the limitations and best practices for using this Markdown editor?

Limitations: No cloud sync or auto-save (manual export required), no real-time collaboration, file size limited by browser memory (recommend <5MB), and some advanced features like Mermaid diagrams may require specific extensions. Best practices: 1) Save frequently using download or copy buttons. 2) Use descriptive headings to structure documents. 3) Keep lines under 80 characters for readability. 4) Test exports before publishing. 5) Use code blocks for all code examples. 6) Add alt text to images for accessibility. 7) Use relative links for internal navigation. 8) Validate complex tables render correctly. 9) Keep documents focused on single topics. 10) Use version control (Git) for important Markdown documents.

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Use Cases

Discover how to integrate this tool into your workflow

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Technical Documentation

Write comprehensive technical documentation with code examples, API references, and architecture guides. Perfect for software projects, APIs, and system documentation.

  • API documentation with request/response examples
  • Software architecture and design docs
  • Installation and setup guides
  • Troubleshooting and FAQ sections
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Open Source Projects

Create README files, contributing guidelines, and changelogs for GitHub/GitLab projects. Essential for open source maintainers and contributors.

  • Project README with features and installation
  • Contributing guidelines and code of conduct
  • Release notes and version history
  • License and attribution information
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Content Writing & Blogging

Draft articles, blog posts, and web content with formatted text, images, and links. Export to HTML for direct website integration.

  • Technical blog posts with code snippets
  • Tutorial content with step-by-step guides
  • Opinion pieces and essays
  • SEO-optimized web content
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Note Taking & Knowledge Management

Organize personal notes, study materials, and documentation. Supports task lists, formatted text, and code snippets for comprehensive knowledge bases.

  • Meeting and lecture notes
  • Personal knowledge base
  • Study guides and reference materials
  • Research notes with citations
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Documentation for Static Site Generators

Write content for Jekyll, Hugo, Docusaurus, and Astro. These platforms use Markdown as the primary content format for static websites.

  • Jekyll blog posts and pages
  • Hugo documentation sites
  • Docusaurus docs with code blocks
  • Astro Markdown content collections
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Collaborative Writing & Review

Draft documents for team review, with copy-paste functionality to version control and collaboration platforms like GitHub, GitLab, and Notion.

  • Team proposals and RFCs
  • Design documents and specs
  • Meeting agendas and summaries
  • Collaborative editing workflows

About This Tool

I write everything in Markdown at this point—README files, docs, even notes. This editor shows live preview as you type, which is way better than editing and refreshing constantly. Supports GitHub Flavored Markdown (tables, task lists, strikethrough) plus syntax highlighting for code blocks. Export to HTML if you need to, or just copy-paste the rendered output.

Technical Details

Built with marked.js parser for CommonMark and GFM compliance. Code blocks get syntax highlighting via highlight.js (supports most languages you'd use). Auto-scroll sync between editor and preview—scroll the editor and preview follows, which is clutch for long documents. Export to HTML or copy to clipboard, whatever your workflow needs.

Algorithm

Parser uses recursive descent—tokenizes input into blocks (headers, lists, code blocks) and inline elements (links, emphasis, code). Generates HTML with DOMPurify sanitization to prevent XSS (important if you're rendering user content). Nothing crazy, just solid Markdown parsing that handles edge cases better than most implementations.

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Privacy Commitment

🔒 **Privacy First**: Unlike server-based tools, AI-TOL processes everything locally in your browser - your data never leaves your device. No uploads, no tracking, completely private.