2026/06/22 update：Added image alt suggestion by Gemini。

--

Stop waiting for complaints. Start feeling what your users feel — directly inside your dev workflow.

When we talk about accessibility, most people think of checklists, screen readers, or legal compliance.

But real accessibility issues don’t always show up in audits. They show up when:

  • A user can’t tell where the content begins
  • A button is too small for touch
  • Text is blurry for someone with poor vision
  • A flashing banner causes discomfort
  • A layout breaks when text size increases

These problems often go unnoticed — until it’s too late.

That’s why I built Accesserty DevCheck: A developer tool that helps you simulate real-world accessibility challenges and run basic tests, all from your browser.

Why Simulation Matters

Automated tools like Lighthouse or axe-core can check for missing alt text, bad heading structure, or missing ARIA labels.

But they can’t tell you what it’s like to actually use your product if:

  • You have color blindness
  • You experience visual blur or cataracts
  • You can’t see part of the screen
  • You use only one finger on a touchscreen
  • You rely on large text or dark modes

That’s where DevCheck’s simulation layer comes in.

What DevCheck Offers

These tools let you experience a website the way many users do — with visual or interaction limitations:

  • Color Blindness Simulation (Red-green, blue-yellow, total monochrome, and more)
  • Visual Blur Simulation
  • Myopia (full blur)
  • Presbyopia (center blur)
  • Cataracts (glare + fog)
  • Screen Occlusion
  • Simulate partial visual field loss (common with eye diseases)
  • Large Text / Increased Spacing
  • Helps test responsive behavior under assistive settings
  • Color Inversion Mode
  • Simulate forced dark mode effects
  • Finger Tap Zone Simulation
  • Shows a 64px circle around your cursor to test if small clickable areas are accessible

Detection Tools (Debug Mode)

  • axe-core audit
  • Run in-browser checks for common violations
  • (Coming Soon)
    • Image alt text analysis
    • Heading structure visualizer
    • Landmark checks
    • SEO metadata detection
    • ARIA misuse warnings

Who is it for?

  • Frontend developers — Test as you build
  • Designers — Validate layouts, spacing, and color choices
  • PMs — Simulate user pain points before demo day
  • Testers — Reproduce visual experience issues
  • Customer support — Understand user complaints better

It’s not about compliance — it’s about empathy

Most users won’t report accessibility issues.

Why?

Because:

  • They don’t know how
  • They don’t know who to tell
  • They don’t believe anything will change

DevCheck gives you a way to feel what they feel — before they bounce, quit, or struggle in silence.

Try Accesserty DevCheck Now:

You don’t have to be an accessibility expert.

You just need the curiosity to simulate, and the willingness to adjust before it hurts.