Find keyboard shortcuts that clash with each other, the browser, the OS or screen reader keys

Keyboard shortcut conflictsFreeFor designers, developers and product teams

25/day

free runs a day, no sign-in.

Before: what you give it

The example input, as typed in. You paste text, CSS, markup or notes.

shortcuts:
  Cmd+K: Open search
  Ctrl+Alt+T: Toggle tray
  G: Go to inbox
  Cmd+T: New thread
  Cmd+Shift+P: Command palette
  Cmd+K: Quick switcher
  Alt+Q: Quit
platform: any

After: what comes back

The first lines of a real run on that input. Nothing here is edited by hand.

KEYBOARD SHORTCUT CONFLICTS
Parsed 7 shortcuts (platform: any)
Findings: 2 high, 3 medium, 1 low, 0 info

[HIGH] Duplicate in your list: meta+k is assigned 2 times
  Two actions on one combination means one never fires.
  Seen in: Cmd+K = Open search | Cmd+K = Quick switcher
  Fix: Give each action its own combination.

[HIGH] Browser or editing conflict (convention): Cmd+T collides with new tab
  Browsers reserve this; pages often cannot override it reliably, and overriding it breaks expectations.
  Seen in: Cmd+T = New thread
  Fix: Pick another combination, or scope the handler to your own widget when it has focus.
... full output on the tool page

What you get

Duplicates, browser and OS collisions, AltGr and VoiceOver clashes, and single-key shortcuts by severity

What it cannot do

The collision table is a convention-level summary of common shortcuts, not every app or assistive technology.

Who it is for

Designers
Developers
Product teams

Free and Pro

Free	25 runs a day per IP address, up to 100,000 characters a run.
Pro	No daily limit, 300 requests a minute, up to 200,000 characters a run.

What each plan includes

Use it from your assistant

The tool is called check_keyboard_shortcuts. Connect the server once, then ask for it by name or just describe the job. Install steps for each app.

claude mcp add --transport http designers https://designers.allthepossibles.com/mcp

curl -X POST https://designers.allthepossibles.com/api/shortcut-conflicts -H 'content-type: application/json' -d '{"shortcuts":"Cmd+K: Open search\nCtrl+Alt+T: Toggle tray\nG: Go to inbox\nCmd+T: New thread\nCmd+Shift+P: Command palette\nCmd+K: Quick switcher\nAlt+Q: Quit","platform":"any"}'

Try it here

The form starts with the same example input, so you can run it first and then swap in your own.

Cmd+K: Open searchPlatform