Skip to main content
Zunderdog Mascot

UI/UX Auditor by Zunderdog

Free AI UI/UX Audit Tool

Get a free UX/UI report on your website by email: your score, what's holding the page back and the fixes that matter most.

Updated

We email the report to the address you give and may follow up about your site. We save your details with the page's address, your approximate location and browser. Your browser asks Microlink for the screenshot and Google Gemini writes the report. See our Privacy Policy.

Ready to Elevate Your User Experience?

Partner with Zunderdog to redesign your product for higher engagement, better usability and lasting impact.

Get Expert Consultation
Explore More Tools

Zunderdog's UI/UX Auditor is a free UI UX audit tool for a live web page: what a visitor sees, how the layout guides them and where the experience breaks down. Enter the page's address with your name and email and the report reaches your inbox, usually within a few minutes. No signup, no credit card.

The audit checks visual design quality (colour, typography, spacing and imagery), layout and information architecture, navigation clarity, signs of mobile responsiveness, call-to-action effectiveness, content readability and hierarchy, accessibility and brand consistency. They're the same areas a paid UX audit starts from.

The report gives a UX score out of 100, a short summary, what's working, the specific problems on your page and what each one costs you, two or three quick wins you can make yourself and the bigger fixes that need design or development work. It's built for founders checking a site before launch, marketers reviewing a landing page before a campaign and agencies who want a fast first read on a client's site.

An AI audit is a strong first pass, not a replacement for a full design review. It won't run usability tests or talk to your users. Think of it as the fastest way to find the obvious problems before you bring in Zunderdog's design team for the deeper work.

How It Works

1. Enter the page and your details

Give the address of any live page (yours, a client's or a competitor's) with your name and email. A phone number is optional.

2. The AI reviews it against UX design principles

A screenshot of the whole page is analysed for design quality, layout, navigation, accessibility and more.

3. Get your report by email

Your score, the problems found on the page, quick wins and bigger fixes arrive in your inbox, usually within a few minutes.

4. Fix what matters most

Make the quick wins yourself, or talk to our team about the bigger fixes.

How the UX Score Is Worked Out

The score out of 100 is one overall judgement by an AI model, Google's Gemini 2.5 Flash (or Gemini 2.5 Flash-Lite, its lighter sibling, when it's too busy). It isn't added up from separate checks and no area has a fixed weight. This is what happens when you ask for a report:

  1. You give the page's address, your name and your email. Your browser asks Microlink, a screenshot service, for a screenshot of the whole page at desktop width (1,440 pixels).
  2. Our server checks that the address is a public website and uses the screenshot only if it shows the page itself, not an error page or a bot check. If the page can't be loaded at all, you're told straight away and nothing is saved.
  3. Nothing is shown on screen. The request waits in a queue and usually runs within a few minutes. When Gemini is busy we try again for up to an hour. If no report can be made in that time, we email you to say so.
  4. Gemini looks at the screenshot for ten things: visual design (colour, typography, spacing and imagery), layout and information architecture, navigation, signs of mobile responsiveness, calls to action, readability and content hierarchy, signs of loading speed, accessibility, brand consistency and the first impression the whole page makes.
  5. It has to answer in a fixed format: a score out of 100, a short summary, what's working, specific problems tied to what's on the page, quick wins you can make yourself and bigger fixes. It also says what kind of site it looks like (a business selling something, a portfolio and so on) and we use that to decide whether the email offers a call. An answer in any other shape is rejected and the request is tried again.
  6. It runs at temperature 0, the model's least random setting. Even so, two audits of the same page can differ.
  7. The report comes by email, with no account. Each email address or phone number can have two reports a day.

What the audit doesn't see

  • Your mobile layout: the screenshot is taken at desktop width only.
  • Your code: the model sees a picture of the page. It judges accessibility by what's visible, such as contrast and text size, not by the alt text, heading tags or form labels in the code.
  • Speed: nothing is timed. Lighthouse and PageSpeed Insights measure that.
  • The rest of your site: only the address you enter is audited.

If no usable screenshot comes back, the model reads the first 5,000 characters of the page's HTML instead, looking at what code shows, such as headings, labels and alt text, meta tags, performance hints, mobile settings and forms. On many sites that is mostly setup code rather than the visible page. Treat those reports as rougher: the email says when a report was made this way.

An AI audit is a first pass. For user research, usability testing and a redesign by our designers, see our UI/UX design services. Our guide to UX audits explains what a full audit covers.

Frequently Asked Questions

Yes. The report is free, with no credit card and no signup. We only need your name and email to send it. Each email address can have two reports a day.

It's a fast, structured first read against established UX principles: strong for catching obvious design, layout and accessibility issues. It doesn't replace usability testing with real users or a designer's deep dive, which is what Zunderdog's design team does next.

The score out of 100 reflects how well the page follows UX best practice across design, layout, navigation, content and accessibility. It's a benchmark to track improvement against, not a pass or fail grade.

Yes. Enter any public website address, including a competitor’s, to see how it scores on the same criteria.

PageSpeed and Lighthouse measure technical performance. The UI/UX Auditor looks at design, usability and user experience: how the page looks, reads and guides a visitor, not how fast it loads.

Most reports reach your inbox within a few minutes. When the AI model is very busy it can take up to an hour. If no report can be made, we email you to say so.

Check your spam or promotions folder first. If nothing has arrived after an hour, write to sales@zunderdog.com and we'll look into it.