PentaShapes is an interactive web tool that helps guitarists visualize and understand scales across the fretboard.
You choose the root note, scale type (like pentatonic), and which shapes to display — and the app shows the intervals on the neck, making it easier to connect patterns and create solos.
Many guitar players know scale shapes — but struggle to use them musically. PentaShapes was created to bridge that gap, by showing intervals clearly and helping players think beyond shapes.
- If you're a dev who loves music: let’s build it together!
- If you're a guitarist: open issues with feedback, ideas or requests.
- Contributions in UX or new scale systems are more than welcome!
- HTML, CSS, JavaScript
- jQuery
If you like the idea and want to support it:
- Give it a ⭐ on GitHub!
- Share it with other guitarists
This project is licensed under the Creative Commons Attribution 4.0 International (CC BY 4.0).
Feel free to use, modify, and share the code, even commercially, as long as you give credit to Márcio Souza Junior.