# Fast Markdown Reader

> AI writes it. You're the one reading it.

Plans, specs, summaries, transcripts — it all lands as Markdown now, and reading it has quietly
become most of the job. Fast Markdown Reader is built for those hours: it opens the moment you
click, it's easy to look at, and it never bogs your Mac down, however many files you leave open.

Free · Mac (Apple silicon, macOS 13+) · open source (MIT) · coming to the Mac App Store · by
DubDubDub Corp.

## It's a text file. Why is your fan on?

Because most Markdown apps are a web browser wearing a costume. That's the beat before the window
opens, the memory that climbs the longer you leave it running, and yes — the fan, over some text.
This one is a Mac app, plain and simple. Every number below was measured, not marketed.

| | Fast Markdown Reader |
|---|---|
| Opening | Instant. There's no loading screen, because there's nothing to load. |
| While you read | Uses no processor time at all. The fan stays off; your battery doesn't notice it's open. |
| Memory | ~127 MB with nine large documents open at once — and ~52 MB handed back the moment you close them. It doesn't creep up over the day. |
| Big files | A 4,000-paragraph document opens right away — it only draws the part you're looking at. |
| Diagrams | Flowcharts and sequence diagrams appear right in the page, even with no internet. Drawn once, instant every time after. |
| Images | Scroll past a picture and it quietly gives its memory back; scroll up and it's there. The page never jumps while you read. |
| Code | Colored the way your editor colors it, with a Copy button on every block. |
| Reading | Tabs, find (⌘F), bigger or smaller text (⌘+/⌘−), automatic dark mode. |
| Typos | Right-click the paragraph, fix it, done — it saves straight to your file. |
| Works on | Macs with Apple silicon (M1 and later), macOS 13 or later. |
| Price | Free — and the source is public, so every number here is something you can check yourself. |

## What it looks like

- **Diagrams show up, even offline.** Flowcharts and sequence diagrams appear right where they
  belong — on a plane, on the subway, anywhere. Each one is drawn a single time, then it's instant
  forever, and it stays sharp however far you zoom in.
- **Pictures, without the weight.** Images look sharp, but the ones you've scrolled past quietly
  hand their memory back. Your place on the page never shifts while you're reading.
- **Code you can actually read.** Code is colored the way your editor colors it, on its own card,
  with a Copy button on every block and a switch for long lines.

## What's actually inside

Pure Swift, AppKit and TextKit — no Chromium, no Electron, no web runtime for the text. Diagrams are
mermaid, bundled in the app and snapshotted once to a vector PDF cached by content hash. Off-screen
media drop their pixels while keeping their exact layout size, so nothing reflows and the scroll bar
never swings. Non-contiguous layout means only the viewport is ever laid out.

## Install

Coming to the Mac App Store, where it'll be free and one click. Until then, build it from source:

```bash
git clone https://github.com/taekim34/fast-markdown-reader
cd fast-markdown-reader
./Scripts/make-app.sh
open FastMDReader.app
```

## Support
- Report a bug or request a feature: https://github.com/taekim34/fast-markdown-reader/issues
- Email: biz@ww-w.ai
- Privacy policy: https://ww-w.ai/fast-markdown-reader/privacy/

## Links
- Source code: https://github.com/taekim34/fast-markdown-reader
- Publisher: https://ww-w.ai (DubDubDub Corp.)