written in pixels

UX audit

Live

see what gets in the way on any page.

A browser extension that checks the page you're on against the standards you pick. WCAG 2.2, Apple's guidelines, NN/g, design systems, style guides, Core Web Vitals and privacy rules are all in. It marks each problem and says how to fix it.

Download the extension See what it covers

For Chrome, Edge, Brave and Arc on a computer. Phones and tablets aren't supported yet. Nothing leaves your browser.

Why teams use it

Shows its sources

Every finding links to the guidance behind it.

Points at the problem

Numbered markers on a screenshot, plus a jump back to the live page.

You pick the standards

Check against all of them, or only the ones your team follows.

What it covers

Six lenses, one report.

45 built-in checks plus 70 WCAG rules from axe-core. Each one is a fixed rule run against the live page, so a rerun after a fix is a fair test.

WCAG 2.2 AA · Apple HIG · axe-core

Accessibility

  • Images without alt text
  • Links and buttons with no accessible name
  • Form fields without labels
  • Personal detail fields without autocomplete
  • Text contrast below 4.5:1, or 3:1 for large text
  • Links in body text marked by color alone
  • Text smaller than 11px, Apple's minimum
  • Missing, repeated or skipped headings
  • Missing page language or title
  • Pinch-zoom turned off
  • Tap targets under 24×24px
  • Custom tab order, duplicate IDs and untitled frames
  • Audio that plays on its own
  • 70 axe-core rules, like ARIA mistakes, list structure, table headers and skip links

NN/g · Laws of UX · Shneiderman · ISO 9241-110

UX design

  • Placeholder text used as the only label
  • Controls under Apple's 44×44pt touch size
  • Email and phone fields with the wrong keyboard
  • Required fields that aren't marked
  • Links that open a new tab without saying so
  • No route to help or contact
  • Too many filled buttons on the first screen
  • Main navigation with more than five top-level items
  • Too many typefaces

Style guides · NN/g

Content design

  • “Click here” and “Learn more” links
  • Generic button labels like Submit or OK
  • Body copy above NN/g's grade 8 reading level
  • Sentences over 25 words
  • Paragraphs over 5 sentences
  • Long phrases in all caps
  • Mixed Title Case and sentence case
  • Too many exclamation marks

web.dev Core Web Vitals

Performance

  • Main content slower than 2.5 seconds to appear (LCP)
  • Layout that shifts while loading, above 0.1 (CLS)
  • Images without width and height

Google Search Central

Search

  • Missing meta description
  • Vague page titles like “Home”
  • Pages that ask search engines not to list them

GDPR · FTC · UK ICO · Deceptive Design

Privacy and trust

  • Marketing consent boxes ticked already
  • Decline options that guilt people into saying yes
  • Tracking services that load with the page

The report

Every finding says where, why and how to fix it.

A UX Audit report with a count of issues, summary cards for each area and a screenshot marked with numbered issues.
A real report, run on a test page we built with known problems.

Marked on screen

Numbered boxes show where each issue sits on the part of the page you were looking at.

Show on page

Jump back to the live page with the problem outlined.

Pick your standards

Choose them before you run it, or turn them on and off in the report to see what each one adds.

Sources included

Every finding links to its sources. Copy the report for a ticket, export it as JSON or print it.

Standards

Built on guidance design teams already use.

These are the pages the checks come from. Pick any mix of these groups in the extension. In the report, every finding links to the sources that apply and says what each recommends.

WCAG 2.2

With Section 508 and EN 301 549 where axe-core maps them

Design systems

GOV.UK, U.S. Web Design System, IBM Carbon and Android

Privacy and dark patterns

FTC, GDPR, UK ICO and Deceptive Design

Apple Human Interface Guidelines

UX design standards

NN/g’s 10 heuristics, Laws of UX, Shneiderman’s Eight Golden Rules and ISO 9241-110

Written in Pixels standards

  • A-05 Text contrast
  • A-09 Never color alone
  • C-04 Type floor
  • C-08 Heading levels
  • D-10 Reflow and zoom
  • D-13 Top-level navigation
  • F-01 Target size
  • F-04 Keyboard
  • F-06 Semantics
  • F-08 Names and alt text
  • F-10 Consistent help
  • F-12 Media
  • G-01 Plain language
  • G-03 Sentence case and verbs
  • G-07 Paragraphs
  • G-09 Link text
  • G-14 User control
  • H-06 Banned words and marks
  • I-02 Visible labels
  • I-03 Required and optional
  • I-06 Input types
  • J-01 Core Web Vitals
  • J-04 Image sizing
  • K-04 Consent
  • K-05 Nothing before consent
  • L-07 One primary per view

Nielsen Norman Group articles

Content style guides

GOV.UK, Microsoft, Google, Mailchimp and Digital.gov

Performance and search

web.dev Core Web Vitals and Google Search Central

We checked every source against the live page on 30 and 31 Oct 2026. Written in Pixels standards are the studio's own rules. UX Audit includes axe-core by Deque Systems, used under the Mozilla Public License 2.0. UX Audit isn't affiliated with Apple, Nielsen Norman Group, W3C, Deque or the other publishers.

Install

Up and running in four steps.

Download

Get the zip file and unzip it.

Open extensions

Go to chrome://extensions in Chrome, Edge, Brave or Arc.

Developer mode

Turn on the switch in the top right corner.

Load it

Choose Load unpacked, pick the unzipped folder and pin it to your toolbar.

UX Audit for Chromium browsers

Runs on
Chrome, Edge, Brave or Arc on a computer
Version
1.4.1
Reads
Only the tab you click it on, when you click it
Stores
Your last five reports, on your computer
Sends
Nothing
Download the extension

Limits

A fast first pass, not a replacement for people.

Rules catch the problems a rule can see. The rest needs someone who knows the users and the task.

Good at

  • Catching missing labels, names, alt text and low contrast before they go live
  • Spotting vague links, generic buttons and dense copy
  • Flagging ARIA mistakes and consent tricks
  • Giving a team a shared checklist it can rerun

Can't tell you

  • Whether alt text and labels are accurate
  • How the page feels with a keyboard or screen reader
  • Contrast on text over images or gradients
  • Whether people can finish their task
  • Anything behind a click, like error states and menus
  • Real-world speed. Speed comes from one load on your computer, so check field data too

Privacy

The extension reads only the tab you audit, and only when you click it. Reports stay on your computer, and we keep the last five. It sends nothing to us or anyone else. This site has no cookies and no tracking. Read the full privacy policy.

Accessibility

We built this site to WCAG 2.2 AA and tested it with automated checks, keyboard only and at 320px wide. A full screen reader pass is still to come. If something gets in your way, book a call and tell us. We'll fix it.

The tool finds what a rule can see. We find the rest.

If you want a person to walk your product with real user goals, tell us what's stuck.

Book a call