# Heynote
[](https://github.com/heyman/heynote/releases)
[](https://github.com/heyman/heynote/actions?query=workflow%3ATests)
## General Information
- [Website](https://heynote.com)
- [Documentation](https://heynote.com/docs/)
- [Changelog](https://heynote.com/docs/changelog/)
Heynote is a scratchpad and note-taking app for developers and power users. It functions as a large persistent text buffer where you can write down anything you like. Works great for that Slack message you don't want to accidentally send, a JSON response from an API you're working with, notes from a meeting, your daily to-do list, etc.
Heynote buffers are divided into blocks, and each block can have its own Language set (e.g. JavaScript, JSON, Markdown, etc.). This gives you syntax highlighting and lets you auto-format that JSON response. Just hit `Ctrl/Cmd + Enter` to create a new block.
Available for Mac, Windows, and Linux.
## Features
- Persistent text buffers
- Block-based
- Inline images
- Multiple buffers in tabs
- Search (single and multi buffer)
- Math/Calculator mode
- Currency conversion
- Syntax highlighting:
C++, C#, Clojure, CSS, Elixir, Erlang, Dart, Go, Groovy, HTML, Java, JavaScript, JSX, Kotlin, TypeScript, TOML, TSX, JSON, Lezer, Markdown, Mermaid, PHP, Python, Ruby, Rust, Scala, Shell, SQL, Swift, Vue, XML, YAML
- Language auto-detection
- Auto-formatting
- Multi-cursor editing
- Dark & Light themes
- Option to set a global hotkey to show/hide the app
- Default, Emacs-like or custom key bindings
- Spellchecking
## Documentation
[Documentation](https://heynote.com/docs/) is available on the Heynote website.
## Development
To develop Heynote you need Node.js and you should (hopefully) just need to check out the code and then run:
```
> npm install
> npm run dev
```
### Run Tests
To run the tests:
```
> npm run test
```
To run the tests in the Playwright UI:
```
> npm run test:ui
```
### Contributions
I'm happy to merge contributions that fit my vision for the app. Bug fixes are always welcome.
## FAQ
### Where is the buffer data stored?
See the [documentation](https://heynote.com/docs/#user-content-the-notes-library).
### Can you make a mobile app?
No, at the moment this is out of scope, sorry.
### What are the default keyboard shortcuts?
See the [documentation](https://heynote.com/docs/#user-content-default-key-bindings).
## Thanks!
Heynote is built upon [CodeMirror](https://codemirror.net/), [Vue](https://vuejs.org/), [Electron](https://www.electronjs.org/), [Math.js](https://mathjs.org/), [Prettier](https://prettier.io/) and other great open-source projects.
## General Information
- [Website](https://heynote.com)
- [Documentation](https://heynote.com/docs/)
- [Changelog](https://heynote.com/docs/changelog/)
Heynote is a scratchpad and note-taking app for developers and power users. It functions as a large persistent text buffer where you can write down anything you like. Works great for that Slack message you don't want to accidentally send, a JSON response from an API you're working with, notes from a meeting, your daily to-do list, etc.
Heynote buffers are divided into blocks, and each block can have its own Language set (e.g. JavaScript, JSON, Markdown, etc.). This gives you syntax highlighting and lets you auto-format that JSON response. Just hit `Ctrl/Cmd + Enter` to create a new block.
Available for Mac, Windows, and Linux.