If you’re using Karabiner-Elements and curious about KeyPath, this page maps the concepts you know to how KeyPath works — and helps you decide if switching makes sense.

Why consider switching?

Karabiner-Elements is an excellent tool that pioneered keyboard remapping on macOS. KeyPath builds on that foundation with a different engine (Kanata) that offers specific advantages:

  Karabiner-Elements KeyPath
Config format JSON (verbose, complex) Kanata S-expressions (concise)
Tap-hold to_if_alone + timeout 4 tap-hold variants, per-key tuning
Home row mods Possible via complex JSON, global timeout, no misfire prevention Built-in with split-hand detection, per-finger timing, anti-misfire
Per-finger timing Global timeout only Individual finger sensitivity
Layers Separate rule sets First-class deflayer with layer-switch
App-specific Per-app rules via JSON Automatic layer switching via TCP
Configuration JSON editing or Karabiner UI Visual UI + direct config editing
Engine Custom C++ event tap Kanata (Rust, purpose-built for tap-hold)

Karabiner’s strengths that KeyPath doesn’t replicate:

  • Massive community rule library with importable JSON rules
  • Per-device targeting UI — apply different rules to each connected keyboard out of the box
  • Longer track record (10+ years, widely trusted)
  • Simpler mental model for basic remaps

Concept mapping

Here’s how Karabiner concepts translate to KeyPath:

Simple remaps

In Karabiner: Edit JSON to map one key to another.

In KeyPath: Open the Custom Rules tab, set your Start key and Finish key, click Save. KeyPath generates the configuration for you.

Tap-hold (dual-role keys)

In Karabiner: Write a complex JSON rule with to_if_alone and a timeout.

In KeyPath: Create a rule, enable the Hold, Double Tap, etc. toggle, and choose from four hold behavior options — Basic, Trigger Early, Quick Tap, or Custom Keys. Each offers different activation strategies. See the One Key, Multiple Actions guide for details.

Layers

In Karabiner: Create separate rule sets and manage profiles.

In KeyPath: Layers are a first-class concept. Create multiple layers in the UI and use tap-hold keys or dedicated layer-switch keys to move between them.

Complex modifications

In Karabiner: Import or hand-write complex JSON rules from the community library.

In KeyPath: Use the pre-built rule collections (Hyper Key, Home Row Mods, Quick Launcher, etc.) or create custom rules through the UI. KeyPath ships with 16 built-in rule collections that cover the most popular Karabiner complex modifications.

App-specific rules

In Karabiner: Per-app conditions in JSON rules.

In KeyPath: Go to the Custom Rules tab, click New Rule, select an app, and add your mappings. KeyPath switches layers automatically when you switch apps — no manual toggling needed. See the Window Management guide.

Screenshot Screenshot — Custom Rules tab (what you’ll see instead of JSON):

  ┌─────────────────────────────────────────────────────┐
  │  Custom Rules                                       │
  │                                                     │
  │  ┌────────────────────────────────────────────────┐ │
  │  │  EVERYWHERE (global rules)                     │ │
  │  │  caps_lock ──→ escape                          │ │
  │  │  a (hold) ──→ left_shift                       │ │
  │  │  f (hold) ──→ left_command                     │ │
  │  └────────────────────────────────────────────────┘ │
  │                                                     │
  │  ┌────────────────────────────────────────────────┐ │
  │  │  🧭 SAFARI                            [✏] [🗑] │ │
  │  │  h ──→ left_arrow                              │ │
  │  │  j ──→ down_arrow                              │ │
  │  └────────────────────────────────────────────────┘ │
  │                                                     │
  │  [ ↺ Reset ]                     [ + New Rule ]     │
  └─────────────────────────────────────────────────────┘
  No JSON editing — visual rule cards with edit/delete.

What you’ll gain

  • Better tap-hold — Kanata offers four tap-hold variants with per-key timing, giving you more control over dual-role key behavior. See Shortcuts Without Reaching.
  • Split-hand detection — Cross-hand keypresses activate modifiers, same-hand keypresses produce letters. This reduces home row mod misfires significantly.

Home row mods comparison

This is where the difference is most noticeable. If you use home row mods in Karabiner, you’ll find KeyPath significantly more capable:

| Aspect | KeyPath | Karabiner-Elements | |—|—|—| | Tap-hold variants | 4 variants, tunable per key | Single to_if_alone | | Split-hand detection | Built-in | Requires complex JSON rules | | Per-finger timing | Per-key offsets via sliders | Global timeout only | | Layer integration | Hold-activate layers | Separate rule sets | | Configuration | Visual UI with sliders | JSON editing | | Engine | Kanata (purpose-built for tap-hold) | General-purpose JSON rules |

  • Readable config — A typical remap takes 3 lines of Kanata vs 20+ lines of Karabiner JSON.
  • App launching — Built-in app launching for launching apps, opening URLs, and tiling windows from your keyboard.
  • Visual configuration — KeyPath’s UI lets you configure without editing JSON or config files directly.

What you’ll lose (temporarily)

  • Community rule library — Karabiner’s importable modifications library has thousands of user-contributed rules. KeyPath ships with 16 built-in rule collections (Vim Navigation, Home Row Mods, Window Snapping, Quick Launcher, etc.) but doesn’t yet support importing community-shared packs. Interested in a Karabiner rule import tool? Let us know in GitHub Discussions so we can prioritize it.
  • Some edge-case rules — Karabiner’s JSON is extremely flexible. Some exotic conditions (mouse button combinations, device-specific vendor IDs with complex conditions) may require creative workarounds in Kanata.
  • Track record — Karabiner has been trusted for 10+ years. KeyPath is newer. Both are open source, so you can verify the code yourself.

Can I run both?

Not simultaneously. Both tools intercept keyboard events at the system level, and running two event interceptors causes conflicts (dropped keys, double-presses, system instability). You should fully disable or uninstall Karabiner before using KeyPath.

KeyPath’s installer wizard will detect running Karabiner processes and warn you if there’s a conflict.

Note: KeyPath uses the same Karabiner VirtualHIDDevice driver for its virtual keyboard. If you already have Karabiner installed, this driver is already present and approved.

Migration steps

1. Document your current setup

Before uninstalling Karabiner, export or screenshot your rules:

# Your Karabiner config is at:
cat ~/.config/karabiner/karabiner.json

# Or copy it somewhere safe:
cp ~/.config/karabiner/karabiner.json ~/Desktop/karabiner-backup.json

2. Install KeyPath

Follow the Installation guide. KeyPath’s wizard handles permissions and driver setup.

3. Quit Karabiner

Quit Karabiner-Elements from its menu bar icon, or:

# Quit Karabiner
osascript -e 'quit app "Karabiner-Elements"'

# Optionally stop the daemon
launchctl bootout system/org.pqrs.karabiner.karabiner_grabber 2>/dev/null

4. Recreate your rules

Start with the basics — remaps you use most — and build up:

  1. Caps Lock remap — Enable the pre-built rule in KeyPath
  2. Home row mods — Enable the pre-built rule (much easier than the Karabiner JSON version)
  3. Custom rules — Recreate your most-used modifications one at a time

See Your First Mapping for a walkthrough.

5. Fine-tune

KeyPath’s per-finger timing and split-hand detection may mean you need less tweaking than your Karabiner setup required. Start with defaults and adjust from there.

Common Karabiner rules → KeyPath equivalents

Karabiner Rule KeyPath Equivalent
Caps Lock → Escape Pre-built “Caps Lock Remap” rule
Caps Lock → Escape/Control Pre-built rule with tap-hold
Caps Lock → Hyper Pre-built “Caps Lock Remap” → Hyper mode
Home row mods Pre-built “Home Row Mods” rule
Vi-style arrows (HJKL) Custom rule or Vim Navigation
App-specific shortcuts Custom Rules tab
Launch apps from keyboard app launching
Window snapping Window Management

Karabiner feature parity

Not every Karabiner feature has a direct KeyPath equivalent yet. Here’s the current state:

Karabiner Feature KeyPath Status Notes
Simple remaps Full support defsrc / deflayer
Tap-hold / to_if_alone Full support 4 variants, more control than Karabiner
Layers Full support First-class deflayer with layer-switch / layer-toggle
App-specific rules Full support Automatic layer switching via TCP
Simultaneous key combos Full support Kanata chord action
Mouse button remapping Partial Kanata supports mouse keys, but Karabiner’s mouse button conditions are more flexible
Device-specific rules Partial Kanata’s device-if works in raw config, but no UI yet (see #203)
Complex variable conditions Partial Kanata’s switch action covers most cases, but some multi-variable conditions need restructuring
Profile switching Not yet Karabiner lets you switch between profiles; KeyPath uses a single config with layers
Community rule import Partial 16 built-in collections, but no community sharing or import yet (Karabiner has thousands)
Pointing device rules Limited Kanata has mouse key support but not Karabiner’s full pointing device condition system

Config converter (future)

We’re exploring a tool that would let you paste your Karabiner JSON and see the equivalent Kanata config — making migration near-instant for common patterns. If this would be useful to you, let us know in GitHub Discussions so we can prioritize it.

Further reading