---
title: UX Audit Toolkit Nielsen
category: product
entity_type: skill
price: $15
canonical: https://forgehouse.ai/skills/ux-audit-toolkit-nielsen/
lang: en
hreflang_alt: https://forgehouse.ai/tr/skiller/ux-audit-toolkit-nielsen/
last_updated: 2026-06-20
---

# UX Audit Toolkit Nielsen

> Sistematik UX audit playbook

An evidence-based UX audit playbook that combines Nielsen's 10 heuristics, Krug's 3-click rule, Fitts's Law, and Hick's Law into a single 0-100 scoring rubric. It runs automated Playwright and axe-core checks, attaches a screenshot and DOM selector to every finding, and produces an objective severity report designers can act on instead of arguing over.

## Use cases
- Auditing client sites, landing pages, and SaaS apps
- Gathering objective evidence before designer feedback
- Heuristic scan before shipping a new feature
- Root-cause analysis for low-conversion complaints
- Combined accessibility and usability reporting
- Detecting deceptive dark patterns and their legal risk

## Benefits
- Replace subjective opinion with a repeatable severity formula
- Save thousands in UX consultant hours per project
- Win designer buy-in with screenshots, DOM selectors, and fix suggestions
- Prioritize fixes correctly with a 0-4 severity rating tied to frequency and impact

## What’s included
- Nielsen 10-heuristic checklist with automated and manual checks
- Playwright + axe-core audit runner with Fitts and Hick violation detection
- Objective severity calculator (frequency x impact x persistence)
- Fitts's Law CTA calculator and Hick's Law option-count analysis
- JSON audit schema plus a client-ready severity report template
- Dark pattern detection layer with ethical and legal flagging

## Who it’s for
UX designers, product teams, and agencies who need objective, evidence-backed usability audits instead of subjective feedback.

## How it runs
Severity here is a formula, frequency times impact times persistence, never an opinion. Ten steps carry a site from stratified sitemap sample to a report whose catastrophic findings block release:
1. Sets the scope first: single page or full site with a stratified 30-URL sample from the sitemap (home, category, product, checkout, 404), then audits mobile 375px and desktop viewports separately
2. Runs the Playwright plus axe-core script: measures LCP, INP and CLS, scans every interactive element for Fitts violations (targets under 44px rated by size, under 24px is catastrophic) and counts every menu and filter against Hick's 7-option threshold
3. Maps Core Web Vitals onto Nielsen heuristics: a slow LCP becomes a visibility-of-status violation, high CLS an error-prevention violation, so performance and usability land in one rubric instead of two reports
4. Computes severity with a formula, not opinion: frequency times impact times persistence with a visibility multiplier yields the 0-4 rating, so the debate with designers moves to the measurements, never the verdict
5. Measures Krug click depth for the top CTAs from the home page (more than 3 clicks flags, 5 or more is major) and fills the gaps automation cannot see with the 10-heuristic manual checklist
6. Produces the severity report: catastrophic findings block release, every finding ships with a screenshot, a DOM selector and a concrete fix suggestion routed to the right follow-up skill

## FAQ
### We don't have a UX researcher on the team, can we still run a credible audit?
That's the point of the toolkit. The Nielsen 10-heuristic checklist splits into automated checks the Playwright and axe-core runner handles and manual ones with clear criteria, so a developer or PM can produce an evidence-backed report without a research background.

### How is the scoring objective rather than just another opinion?
Every finding carries a screenshot and a DOM selector, and severity is computed as frequency times impact times persistence on a 0-4 scale that rolls up into the 0-100 rubric. Two people running the same audit land on the same numbers, which is what ends the design debate.

### Will it redesign the pages it flags?
No. It finds, proves, and prioritizes usability problems and attaches fix suggestions, but producing the new design is a separate effort. It also detects dark patterns and flags their legal risk without rewriting your flows.

## Price
$15, one-time, no subscription. VAT included.

Related guide: [Building a design system with Claude Design](https://forgehouse.ai/guides/claude-design-design-system/)