pqrs-org/Karabiner-Elements

Change mouse sensitivity in certain apps

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#4300 opened on Oct 27, 2025

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Description

Hi Everyone,

Is there a way to tie together the bundle_indentifiers condition with mouse's XY movement multiplier parameter?

Adjusting mouse sensitivity per app seems to be a pretty common workflow, but I haven't found any related documentation or examples so I wonder is this possible at all?

Thanks for your responses in advance.

Contributor guide

Tech stack
cpp
Domain
desktop
Issue type
feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
needs maintainer response
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
needs investigation
Prerequisites
Understanding of Karabiner Elements keyboard customizationBasic knowledge of C++Familiarity with macOS input handling
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
20
Research direction
To answer this question, investigate the Karabiner Elements documentation and source code to see if the bundle identifiers condition can be combined with the XY movement multiplier parameter. Look for existing examples in the codebase or community configurations. Consider searching for related issues or discussions. If not documented, the contributor may need to test or ask maintainers for confirmation.