Live interpolation preview for GlyphsApp. Explore your variable font's design space in real time — scrub through axes, animate, and preview text without exporting.
- Download or clone this repository
- Double-click GoldenAxes.glyphsPlugin to install (includes both reporter and palette)
- Restart GlyphsApp
- Open a font with 2 or more masters
- Activate the reporter: View > Golden Axes
- Open the palette from the right sidebar
The Golden Axes palette sits in the right sidebar with controls and axis sliders.
- On / Off — toggle the interpolation preview
- Color well — choose the overlay color used in Edit View
- 1x / 2x / 3x — animation speed multiplier
One row per axis defined in your font — no limit on the number of axes. Each row includes:
- Axis name
- Play / Pause — animates between the axis minimum and maximum
- Slider — drag to scrub through the design space
- Value field — type an exact number
Multiple axes can animate simultaneously.
The bottom preview bar shows the interpolated text at the current axis values. Golden Axes manages a hidden instance that keeps the preview in sync with the sliders. Incompatible glyphs fall back to "live" mode and are highlighted with a red background.
When editing a glyph, Golden Axes draws a colored interpolation overlay on top of the current master outline. This lets you compare the interpolated result against the master you are working on.
- Color is set from the palette's color well
- Overlay turns gray when extrapolating beyond the master range
- Incompatible glyphs display a skull emoji centered in the glyph area
Right-click in the Edit View to open the Golden Axes submenu:
| Option | Description |
|---|---|
| Show Edit Overlay | Toggle the colored interpolation overlay in Edit View |
| Center Preview | Center the overlay when its width differs from the current master |
| Show Nodes | Display on-curve nodes of the interpolated outline |
| Make Instance from Current | Add a new instance to Font Info at the current axis position |
| Make Master from Current | Add a new master at the current axis position with interpolated outlines for every glyph |
Center Preview and Show Nodes are disabled when the edit overlay is off.
- GlyphsApp 3 (build 3062+)
- A font with 2 or more masters
MIT — nico.works
