60,250
stars
+1
10,990
forks
982
watchers
93
prs
637
issues
17
releases
3
discussions
README
!Markdown Here logo Markdown Here Visit the website. Get it for Chrome. Get it for Firefox. Get it for Thunderbird. Get it for Opera. Discuss it and ask questions in GitHub Discussions. Markdown Here is a Google Chrome, Firefox, Opera, and Thunderbird extension that lets you write email† in Markdown‡ and render them before sending. It also supports syntax highlighting (just specify the language in a fenced code block). Writing email with code in it is pretty tedious. Writing Markdown with code in it is easy. I found myself writing email in Markdown in the GitHub in-browser editor, then copying the preview into email. This is a pretty absurd workflow, so I decided to create a tool to write and render Markdown right in the email. To discover what can be done with Markdown in Markdown Here, check out the Markdown Here Cheatsheet and the other wiki pages. †: And Google Groups posts, and Blogger posts, and Evernote notes, and Wordpress posts! See more. ‡: And TeX mathematical formulae! !screenshot of conversion Table of Contents Installation Instructions Usage Instructions Troubleshooting Compatibility Notes and Miscellaneous Building the Extension Bundles Next Steps, Credits, Feedback, License Installation Instructions Chrome Chrome Web Store Go to the Chrome Web Store page for Markdown Here and install normally. After installing, make sure to reload your webmail or restart Chrome! Manual/Development 1. Clone this repo. 2. In Chrome, open the Extensions settings. (Wrench button, Tools, Extensions.) 3. On the Extensions settings page, click the "Developer Mode" checkbox. 4. Click the now-visible "Load unpacked extension…" button. Navigate to the directory where you cloned the repo, then the src directory under that. 5. The Markdown Here extension should now be visible in your extensions list. 6. Reload your webmail page (and maybe application) before trying to convert an email. Firefox and Thunderbird Mozilla Add-ons site Go to the Firefox Add-ons page for Markdown Here and install normally. Or go to the "Tools Add-ons" menu and then search for "Markdown Here". After installing, make sure to restart Firefox/Thunderbird! Note: It takes up to a month for Mozilla to approve changes to the Firefox/Thunderbird extension, so updates (features, fixes) will lag behind what is shown here. You can manually choose to install the newest version before it's reviewed from the list of versions: https://addons.mozilla.org/en-US/firefox/addon/markdown-here/versions/ Manual/Development 1. Clone this repo. 2. Follow the instructions in the MDN "Your first WebExtension" article. Opera Note that Markdown Here only works with Opera versions 16 and higher (i.e., the ones that are based on Chromium). Go to the Opera Add-ons store page for Markdown Here and install normally. After installing, make sure to reload your webmail or restart Chrome! Usage Instructions Install it, and then… 1. In Chrome/Opera, make
Top issues
#644Thunderbird 78 support45 comments · 2020-11-24#80What would it take to make MDH work in Apple Mail?28 comments · 2013-06-24#130Thunderbird inserts line breaks in sent HTML that break code lines20 comments · 2013-10-18#92Support Zotero standalone18 comments · 2013-08-07#504Doesn't work with new Gmail14 comments · 2018-06-03#235Make rendered email better for Outlook recipients14 comments · 2014-12-16#217RTL support14 comments · 2014-10-28#67Support Microsoft Outlook14 comments · 2013-05-29
Discussions
#969Math only?0 comments · 2026-02-10#928Adding support for alerts/admonitions0 comments · 2025-11-27#927math broken in example0 comments · 2025-11-25
Latest release
v2.16.0 v2.16.0 2025-07-10What's Changed remove XUL support by @adam-p in https://github.com/adam-p/markdown-here/pull/888 minimize initial permissions by @adam-p in https://github.com/adam-p/markdown-here/pull/889 Full Changelog: https://github.com/adam-p/markdown-here/compare/v2.15.1...v2.16.0