# #fretflip Diagram Service

Stateless guitar, bass, and ukulele fretboard PNG/SVG diagram renderer.

Working URLs:
- Scale PNG: https://diagram.fretflip.com/scale?root=A&scale=minor_pentatonic&size=2x
- Chord PNG: https://diagram.fretflip.com/chord?chord=C&shape=x32010&labels=deg
- JSON Schema (<2KB): https://diagram.fretflip.com/schema

Key params:
- root: A..G with #, b, ##, bb (required on /scale)
- scale: minor_pentatonic, major_ionian, dorian, phrygian_dominant, etc. (or degrees=1,2,b3,4,5,b6,7)
- chord: C, Am, G7, Cmaj7, F#m7b5 (optional shape=x32010 Low-to-High)
- tuning: standard_guitar (default), drop_d, 7_string_standard, standard_bass, standard_ukulele
- display: frets=1-12 | zero_fret=on|off | labels=deg|note|both|none | caged=on|off | lefty=on|off
- output: theme=dark|light | orientation=horizontal|vertical | title=on|off | format=png|svg|json | size=1x..4x
- share wrapper: https://diagram.fretflip.com/c/scale?... or https://diagram.fretflip.com/c/chord?... | editor: https://fretflip.com/guitar-scales-generator