All 141 tools / Research and usability testing
Get a Nielsen heuristic worksheet for a screen or flow, with signals showing where to look first.
Heuristic reviewFreeFor designers, researchers and product teams
20/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.
task: cancel a subscription text: Cancel subscription Are you sure you want to cancel? You will lose access on 14 March. Keep my plan Cancel anyway Something went wrong. Please try again later.
After: what comes back
The first lines of a real run on that input. Nothing here is edited by hand.
Worksheet for the text for the task "cancel a subscription" (28 words) 1. Visibility of system status Does the interface say what it is doing and what just happened for the task "cancel a subscription"? not found: no status words found (loading, saved, step 2 of 4, progress) ask: List every action that takes over a second. What does the person see while it runs? ask: After a save or submit, how does the person know it worked? ask: Can the person always tell where they are in a multi-step flow? findings: ______ severity (0-4): __ 2. Match between system and the real world Does the copy use the person's words, in an order that follows their task? ask: Read each label aloud to someone outside the team. Which ones do they stumble on? ask: Do the icons have an everyday meaning, or one only your team knows? ... full output on the tool page
What you get
Ten heuristic sections with signals, review questions, and blanks for findings and 0 to 4 severity
What it cannot do
Keyword and markup signals only; it scores nothing and the judgement stays with the reviewer.
Who it is for
- Designers
- Researchers
- Product teams
Free and Pro
| Free | 20 runs a day per IP address. |
|---|---|
| Pro | No daily limit, 300 requests a minute. |
Use it from your assistant
The tool is called heuristic_worksheet. 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/mcpcurl -X POST https://designers.allthepossibles.com/api/heuristics -H 'content-type: application/json' -d '{"task":"cancel a subscription","text":"Cancel subscription\nAre you sure you want to cancel? You will lose access on 14 March.\nKeep my plan\nCancel anyway\nSomething went wrong. Please try again later."}'Try it here
The form starts with the same example input, so you can run it first and then swap in your own.
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