I use Proton Docs and Proton Sheets extensively, both in my professional work and in a medical practice. Since I prefer keyboard-focused workflows, reliable keyboard shortcuts are very important to me.

Unfortunately, some of Proton’s current shortcuts conflict with operating-system and keyboard-layout shortcuts. For example, on Windows with a German keyboard layout, Ctrl + Alt is interpreted similarly to AltGr. As a result, pressing Ctrl + Alt + 2 in Proton Docs types the character ² instead of applying a level-two heading. The same issue appears to affect other formatting shortcuts, such as quotations and code formatting.

It would therefore be very helpful if users could customize keyboard shortcuts in Proton Docs and Proton Sheets.

Possible solutions could include:

1. Fully customizable keyboard shortcuts.
2. A choice between Proton’s default shortcuts and an alternative shortcut set that avoids common operating-system conflicts.
3. Presets based on the operating system or keyboard layout, such as Windows, macOS, Linux, German, or US English.

Markdown shortcuts are a useful workaround for some functions in Proton Docs, but they do not cover every feature and do not solve the broader problem in Proton Sheets.

Customizable or layout-aware shortcuts would make Proton Docs and Sheets much more convenient for keyboard-focused workflows and more accessible to users with non-US keyboard layouts.

Thank you for considering this feature.