Short answer: Opera GX's keyboard sounds are a browser feature, set under Settings › Mods › Keyboard Sounds. On a Mac they play while you type in Opera GX and stop when you switch to another app. Typing-sound extensions for Chrome work the same way. For sounds in Pages, Slack, Terminal and the rest of macOS, use a Mac app with Input Monitoring permission, such as Keyslam.
What Opera GX's keyboard sounds are
Opera describes them as built into GX. There are preloaded sounds under Settings › Mods, more packs in the GX Store, and an option to import your own audio files and adjust volume, intensity and effects (Opera's keyboard sounds page, checked November 2, 2026). Opera GX runs on macOS; Opera's download page lists a Universal installer.
Turn them on, change them or turn them off on a Mac
- Open Opera GX's settings. Press Command-comma (⌘,) in Opera GX.
- Go to Mods, then Keyboard Sounds. Opera keeps its preloaded sounds there.
- Pick a sound and set the volume. Choose a preloaded sound or a pack from the GX Store. Opera says you can also import your own audio files and adjust volume, intensity and effects.
- To turn them off, come back here. Settings › Mods › Keyboard Sounds, then disable or mute them.
Why they go quiet outside the browser
On a Mac, an app gets your key presses only while one of its windows is in front. The main exception is an app you've allowed in System Settings › Privacy & Security › Input Monitoring, which can notice keys you press in other apps. Opera's page describes no system-wide mode for GX keyboard sounds, so they follow the browser: switch to Notes or Xcode and they stop.
Extensions are narrower still. They run inside web pages, so they can't hear keys in other apps, and they usually stay silent in the browser's own address bar and settings pages too. Extensions you'll find by searching for “keyboard sounds Chrome extension” or “typing sounds extension” work this way: sounds for your tabs, not the rest of the Mac.
