markdown-here

Google Chrome, Firefox, and Thunderbird extension that lets you write email in Markdown and render it before sending.

24 articles 60.2k View on GitHub ↗
24 articles
How the Markdown Toggle Revert Mechanism and State Management Work in Markdown Here

Discover how the Markdown Toggle revert mechanism in Markdown Here restores original Markdown from hidden data by finding a wrapper element. Learn about its DOM detection and state management.

internals
Mar 5, 2026
Architectural Difference Between Content Scripts and Background Scripts in Markdown Here

Explore the architectural difference between content scripts and background scripts in the Markdown Here extension. Understand their distinct roles in rendering and management.

architecture
Mar 5, 2026
How to Build and Package the Markdown Here Extension Bundle

Learn to build and package the Markdown Here extension bundle using the Node.js build script. Generate Chrome, Firefox, and Thunderbird zip archives efficiently.

how-to-guide
Mar 5, 2026
Markdown Here Browser Permissions: How Host Access is Configured

Understand Markdown Here browser permissions. Learn how host permissions are configured and why activeTab storage and scripting are needed. Get the details now.

deep-dive
Mar 5, 2026
Localization and Internationalization (i18n) System in Markdown Here

Discover the localization and internationalization i18n system in Markdown Here. Learn how it uses Chrome Extension i18n API and JSON bundles for global support.

internals
Mar 5, 2026
How Markdown Here Renders Math TeX/LaTeX Formulas: A Technical Deep Dive

Discover how Markdown Here renders Math TeX/LaTeX formulas by transforming patterns into images using an external service. Deep technical dive for developers.

deep-dive
Mar 5, 2026
How Debug Logs and Troubleshooting Work in Markdown Here: A Complete Guide

Learn how debug logs are generated and troubleshooting mechanisms work in Markdown Here. Explore the DEBUG flag, Utils.consoleLog(), and extensibility for Chrome, Firefox, and Thunderbird.

how-to-guide
Mar 5, 2026
How to Add Support for New Email Clients or Webmail Services in Markdown Here

Learn how to add support for new email clients or webmail services in Markdown Here. Update manifest.json, implement CSS selectors, and adjust quote handling for seamless integration.

how-to-guide
Mar 5, 2026
How Markdown Here Ensures Explicit CSS Styling for Rendered Markdown in Email Clients

Markdown Here injects explicit CSS styles into email clients safeguarding your rendering. Learn how makeStylesExplicit ensures styling survives sanitization for perfect markdown emails.

internals
Mar 5, 2026
How Markdown Rendering Is Customized Using marked.js in the markdown-here Extension

Customize Markdown rendering with markedjs by creating a custom Renderer instance. Override methods and pass options to the marked parser for tailored output. Learn how.

internals
Mar 5, 2026
How Context Menu Integration for the Markdown Toggle Feature Works in Markdown Here

Discover how Adam-P Markdown Here integrates its context menu to toggle Markdown. Learn about event messaging and content script injection in this in-depth technical guide.

internals
Mar 5, 2026
How to Implement Keyboard Shortcuts Like Alt+Shift+M in Chrome Extensions: A Markdown Here Deep Dive

Learn how Markdown Here implements AltShiftM keyboard shortcuts declaratively in Chrome extensions. Discover the power of the manifest commands section for efficient extension control.

deep-dive
Mar 5, 2026

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