Now in early access

AI is writing your code.
Who's checking the output?

VizLint automatically crawls your web app, catches UX issues, accessibility violations, and design inconsistencies — across every breakpoint and browser. Get an instant quality report with a single URL.

Scan your site free →See how it works ↓
0VizLint Score
UX
95
A11y
88
Consistency
91
Responsive
90

AI coding tools ship fast.
Quality doesn't keep up.

Cursor, Claude Code, v0, Bolt, Lovable — AI writes functional code in minutes.

But nobody checks if the output actually looks right.

Buttons too small to tap on mobile.
Contrast ratios that fail accessibility.
Five different card styles that were supposed to be one.
A layout that works in Chrome but breaks in Safari.

You don't notice until your users do.

How it works

Three steps. Zero configuration.

Paste your URL

Public site, staging environment, or localhost via tunnel. VizLint discovers all your routes automatically.

VizLint crawls everything

Every page. Every breakpoint. Every browser. Screenshots, DOM, computed styles — captured and analyzed in minutes.

Get your annotated report

See exactly what's wrong, where it is, why it matters, and how to fix it. Each issue pinned to the exact element on screen.

One number. Complete confidence.

The VizLint Score rates your app from 0 to 100 across five dimensions. Stop shipping on vibes. Ship on evidence.

0VizLint Score
UX Heuristics0
Accessibility0
Consistency0
Responsiveness0
Cross-Environment0

What VizLint catches

Six dimensions of quality. One scan.

Usability Issues

Touch targets too small. Clickable elements too close together. Text truncated. Missing form states.

36px
→min 44px

Accessibility Violations

Color contrast below WCAG AA. Missing alt text. Broken heading hierarchy. Focus indicators invisible.

3.2:1FAIL|4.5:1 required

Design Inconsistencies

Off-brand colors. Typography not on scale. Spacing off the grid. Four button variants that should be one.

8pxvs
12px

Responsive Breakage

Content overflowing on mobile. Text too small to read. Images breaking aspect ratio. Layout collapsing.

Browser Discrepancies

Your layout in Chrome is not your layout in Safari. Font rendering differences. Scrollbars stealing 17px on Windows.

Chrome≠Safari17px shift

Design System Drift

VizLint extracts your implicit tokens. Tracks consistency over time. Know when your system starts drifting.

4 button variants detected, 1 unintentional

See exactly what's wrong. Down to the pixel.

Every issue is pinned to the exact element on your actual screenshot. Color-coded by severity. Numbered for reference. Linked to the CSS causing it.

https://myapp.com/checkout
1Touch target: 36px
2Contrast: 3.2:1
3Spacing: 10px ≠ 8px grid
4Missing alt text

Issues Found

1Touch target: 36px

Button height is 36px. Minimum recommended is 44px for mobile usability.

Critical
2Contrast: 3.2:1

Text contrast ratio is 3.2:1. WCAG AA requires 4.5:1 for normal text.

Warning
3Spacing: 10px ≠ 8px grid

Element spacing is 10px. Your detected spacing scale uses 8px increments.

Info
4Missing alt text

Image element has no alt attribute. Screen readers cannot describe this content.

Critical

Every breakpoint. Every browser. Every page.

Your users don't all use Chrome on a MacBook. VizLint tests the full matrix and shows you exactly where things break.

Chrome/Mac
Chrome/Win
Safari/Mac
Safari/iOS
375px
✓
✓
!
✗
768px
✓
✓
✓
✓
1280px
✓
!
✓
—
1440px
✓
!
✓
—
Pass
Warn
Fail

Built for how you work

Solo Developers & Vibecoders

“I built this whole app with Cursor in a weekend. Is it actually good?”

You've been iterating fast with AI. The app works. But you've got no idea if the buttons are accessible, if the spacing is consistent, or if it works on Safari. Run VizLint before you ship. Know in 2 minutes.

Agencies & Freelancers

“The client expects pixel-perfect. I need to prove it.”

VizLint generates a professional, branded PDF report you can share with clients. It's proof that the work was checked — and a deliverable that justifies your premium.

Product Teams

“We ship weekly. Visual bugs keep slipping through.”

Integrate VizLint into your CI/CD pipeline. Every PR gets checked. Regressions get caught before merge. Your design system stays consistent as you scale.

Built different.

Visual Regression Tools
Accessibility Scanners
AI UX Audit Tools
VizLint
Checks visual quality
✗
✗
✓
✓
UX heuristic evaluation
✗
✗
~
✓
Accessibility audit
✗
✓
✗
✓
Design consistency
✗
✗
✗
✓
Cross-environment testing
~
✗
✗
✓
Annotated screenshots
✗
✗
~
✓
No test suite required
✗
✓
✓
✓
Built for AI-generated code
✗
✗
✗
✓

Simple, transparent pricing

Start free. Upgrade when you need more.

Free

Try it out

$0/ month
  • 1 project
  • 3 pages per scan
  • 2 breakpoints, 1 environment
  • Basic heuristics
  • HTML report
Get started free
Most popular

Pro

For serious builders

$79/ month
  • 3 projects
  • Unlimited pages
  • All breakpoints + local environments
  • Full heuristic engine
  • Annotated screenshots + VizLint Score
  • Scan history + regression tracking
  • Design token extraction
  • Component auto-detection
Start Pro trial

Agency

For teams and clients

$349/ month
  • Unlimited projects
  • Everything in Pro
  • Cloud environments (Safari, iOS, Android)
  • Full testing matrix
  • Branded PDF reports
  • Client sharing links
  • White-label option
  • Component consistency monitoring
  • Priority support
Start Agency trial

Enterprise

Design System Hub across multiple apps. Figma & Storybook integration. Cross-app comparison. Reconciliation reports. CI/CD integration. SSO.

Talk to us →

Frequently asked questions

Your AI writes the code.
Let VizLint check the output.

No credit card. No setup. Just paste a URL.

Scan your site free →