Switch themes on the web

The Canto web app has three theme options — Light, Dark, and System — under Settings → Preferences → Appearance. The change applies immediately.

How do I change the theme?

1. Open Settings in the web app.
2. Choose Preferences (sublabel "Theme & language").
3. Under Appearance, pick Light, Dark, or System.

There's no save button; the interface switches as soon as you click an option.

What does each option do?

• Light — the light interface, regardless of what your operating system is set to.
• Dark — the dark interface, always.
• System — follows your operating system's appearance. If your OS switches to dark mode on a schedule (for example at sunset), Canto switches with it, live, without a reload.

System is the default.

What does the theme affect?

Only how the web app looks to you. Recordings, transcripts, and notes are unaffected, and a recording you share renders in the viewer's own theme, not yours. Exports keep their own formatting too — a PDF exported while you're in dark mode is a normal light document.

Can I set a theme on iOS or Android?

Not from inside the app — the mobile apps follow your device's appearance setting. To use Canto in dark mode on your phone, switch the device itself to dark mode (or schedule it) in iOS Settings → Display & Brightness or Android Settings → Display.

Troubleshooting

The theme looks wrong after I changed my OS setting

If you picked Light or Dark explicitly, Canto keeps that choice and ignores the operating system. Switch to System if you want it to track the OS again.

Dark mode flashes light for a moment on load

A brief flash while the page loads can happen on slow connections before your preference is applied. It resolves once the app finishes loading; if it persists, do a hard refresh of the tab.