Do you read Markdown on your Mac? Plans, notes, READMEs, the files your AI writes for you all day? Then why not make every one of them a pleasure to read? Mardo is the best Markdown viewer ever made. Select any Markdown file in the Finder, press Space, and Quick Look shows it beautifully rendered — tables, code, diagrams, math, and all.
Then watch it come alive. Leave that preview open while Claude Code, Codex, or any other app rewrites the file, and every change arrives in real time, right there in Quick Look, without moving you from the line you were reading. And when a file gets enormous, Mardo doesn’t flinch. It opens a 50 GB Markdown file in about an eighth of a second and lets you jump anywhere in it instantly.
Mardo can do all this because it draws every page with its own engine, MarkEngineV3, which Floof Logic wrote from scratch for the Mac. There’s no web view anywhere inside, and it launches faster than Apple’s own text view. Nobody asked for a Markdown viewer this fast or this careful. Floof Logic built it anyway, because the files you read every day deserve it, and so do you.
Reading is free, forever, with no account. When you’re ready to write, Mardo Pro adds editing and export for a one-time $29.99, and 512 Pixels readers save 20% with code 512MARDO through November 30.
Download Mardo free, press Space on your first file, and see for yourself.