Markdown, diagrams, music, and math
Every Notedog entry is a plain Markdown file. The live preview — in the app on your phone and in the paired browser editor — renders GitHub-flavored Markdown, mermaid diagrams, abc music notation, and LaTeX math. Here is what you can write, with live examples.
LiveThe examples below are rendered right here on this page by the same engines Notedog uses (KaTeX for math, Mermaid for diagrams, abcjs for music), so what you see is what you get in the app.
Markdown
Notedog speaks GitHub-flavored Markdown (GFM). The everyday building blocks:
Headings, emphasis, and links
You write
# Morning pages
Some **bold**, some _italic_, and a
[link](https://notedog.run).Lists and task lists
You write
- Groceries
- Ideas
- Sub-idea
1. First
2. Second
- [x] Shipped
- [ ] Still to doYou see
- Groceries
- Ideas
- Sub-idea
- First
- Second
- Shipped
- Still to do
Quotes and code
You write
> A quote worth keeping.
Inline `code`, and a block:
```js
const greet = () => "hello";
```You see
A quote worth keeping.
Inline code, and a block:
const greet = () => "hello";Fenced code blocks are syntax-highlighted in the Notedog preview.
Tables
You write
| Day | Mood |
| --- | ---- |
| Mon | calm |
| Tue | tired |You see
| Day | Mood |
|---|---|
| Mon | calm |
| Tue | tired |
Mermaid diagrams
Fence a code block as mermaid and Notedog renders it as a diagram — handy for flows, sequences, and quick sketches. Full Mermaid syntax.
Flowchart
You write
```mermaid
flowchart LR
A[Write on phone] --> B[Edit in browser]
B --> C[Back up with Git]
```You see
flowchart LR A[Write on phone] --> B[Edit in browser] B --> C[Back up with Git]
Sequence
You write
```mermaid
sequenceDiagram
Browser->>Phone: open journal
Phone-->>Browser: entries
```You see
sequenceDiagram Browser->>Phone: open journal Phone-->>Browser: entries
Music notation (ABC)
Fence a code block as abc and Notedog engraves it as sheet music with a play button — for jotting down a melody, a practice riff, or a tune you don’t want to forget. Notedog reads ABC notation, a compact, plain-text way to write music.
You write
```abc
X:1
T:Twinkle, Twinkle
M:4/4
L:1/4
K:C
C C G G | A A G2 |
F F E E | D D C2 |
```You see
Press play to hear it. In the app the notation plays offline; the browser editor fetches its instrument samples on first play.
LaTeX math
Write LaTeX between math delimiters. Inline with $ … $ or \( … \); a centered block with $$ … $$ or \[ … \]. Notedog accepts both styles.
Inline
You write
Euler's identity, $e^{i\pi} + 1 = 0$,
in the middle of a sentence.You see
Euler's identity, $e^{i\pi} + 1 = 0$, in the middle of a sentence.
Display
You write
$$
\int_0^\infty e^{-x^2}\,dx = \frac{\sqrt{\pi}}{2}
$$You see
All of this renders live as you type — in the in-app preview and the paired browser editor — and your entry stays a plain .md file the whole time.
