Markdown, beautifully read.
Marklight opens, edits and transforms Markdown files right in your browser. Nothing is uploaded – your documents never leave your device.
Everything you need for Markdown
From quick reading to full documentation folders – Marklight renders what GitHub renders, and a bit more.
Distraction-free reader
Table of contents with scroll-spy, reading progress, light/dark/sepia themes and adjustable typography.
Open whole folders
Browse a docs folder like a website – relative links and images between files just work.
Live editor
Split view with synced scrolling, formatting toolbar, shortcuts, smart lists and autosave.
Math, diagrams & more
KaTeX formulas, Mermaid diagrams, syntax highlighting, footnotes, task lists and GitHub alerts.
Serverless sharing
Share a document as a compressed link. The content lives in the URL fragment – no server ever sees it.
Export anywhere
Download as Markdown or standalone HTML, print to PDF, or present your document as slides.
Handy tools included
Small, focused helpers for everyday Markdown work.
Table generator
Build tables visually or paste from Excel / CSV.
TOC generator
GitHub-compatible table of contents with anchors.
HTML → Markdown
Convert HTML or rich text from websites into clean Markdown.
Markdown → HTML
Get sanitized HTML for blogs, CMS or e-mails.
Diff
Compare two versions line by line or word by word.
Lint & format
Find broken anchors, missing alt texts and tidy up formatting.
Host it yourself in one minute
Marklight needs nothing but PHP 8.1+. No database, no Composer, no build step.
# build & run git clone https://github.com/EinfachDevYT/marklight.git cd marklight docker compose up -d # → http://localhost:8080
# document root → public/ git clone https://github.com/EinfachDevYT/marklight.git # or try it locally php -S localhost:8080 -t public