Free tools for Marp and lecture slides
Everything here runs in your browser; nothing is uploaded, no account needed.
Marp online editor
Write Marp Markdown, see the slides live, present, export PDF or HTML.
Markdown to PDF slides
Paste Markdown, get a PDF with one slide per page, in the browser.
Marp theme builder
Fonts, sizes, colours, classes: generate a theme CSS and preview it.
Marp templates
Lecture, talk, seminar, thesis defence, course introduction, blank.
Marp cheat sheet
Every directive, image keyword and CLI flag on one page.
Slide count calculator
How many slides for a lecture or talk of a given length, in blocks.
Why these tools
Marp turns Markdown into slides, which makes decks searchable, diffable and easy to regenerate; that is why Lecture Studio writes lecture decks as Marp files. The tools on this page cover the moments where a browser is quicker than installing marp-cli: checking a deck someone sent you, trying a theme, starting from a template, or finding a directive. They use Marp Core 4, the same renderer as marp-cli 4 and the VS Code extension.
The guides go deeper: a Marp tutorial for teaching, themes, export, VS Code, and the rest of the blog.