Web Accessibility Statement
PercentageDecreaseCalculator.com is dedicated to ensuring that digital mathematical calculation tools are accessible to every user, regardless of visual, motor, auditory, or cognitive abilities. We build and maintain our platform in accordance with the World Wide Web Consortium (W3C) Web Content Accessibility Guidelines (WCAG 2.1) at Level AA.
Conformance Status & Standards
The Web Content Accessibility Guidelines define standards for designers and developers to improve accessibility for people with disabilities. PercentageDecreaseCalculator.com is fully conformant with WCAG 2.1 Level AA across all calculator engines, instructional text, formulas, and navigation interfaces.
Perceivable
All UI colors exceed strict contrast thresholds. Information is never conveyed through color alone.
Operable
Every tool, button, and input can be operated solely through keyboard navigation without getting trapped.
Understandable
Form controls feature descriptive labels, input formatting cues, and plain-language error alerts.
Robust
Engineered with semantic HTML5 and standard ARIA markup to maximize compatibility with screen readers.
Key Accessibility Implementations
Our development team implements technical safeguards throughout the codebase to ensure an inclusive user experience:
| Feature Category | Implementation Specification | User Benefit |
|---|---|---|
| High Contrast Ratios | Text-to-background contrast ratios exceed 7.0:1 for main body copy and 12.1:1 for dark theme/footer elements (exceeding WCAG AA minimum 4.5:1). | Ensures effortless legibility for individuals with low vision, aging eyes, or color perception differences. |
| Full Keyboard Operability | Logical Tab sequence across inputs and action buttons; pressing Enter automatically runs calculations. |
Enables complete tool functionality for users who cannot operate a mouse or touch screen. |
| Screen Reader Feedback | Calculation outputs use aria-live="polite" and explicit step-by-step mathematical text rather than raw symbol images. |
Assistive technologies announce solutions and warnings immediately as calculations execute. |
| No Content Flashes or Motion | Zero auto-playing animations, zero flashing content, and strict adherence to the prefers-reduced-motion media query. |
Prevents discomfort or seizures for users with vestibular or photosensitive conditions. |
| Skip to Content Link | Keyboard-focused skip links enable bypassing site headers directly to the primary calculator interface. | Saves repetitive keyboard strokes for power users and screen reader navigators. |
Assistive Technology Verification Matrix
We routinely test our calculators using major assistive technologies and modern browser combinations:
- NVDA (NonVisual Desktop Access): Verified on Mozilla Firefox and Google Chrome (Windows).
- VoiceOver: Verified on Safari (macOS and iOS).
- JAWS (Job Access With Speech): Verified on Microsoft Edge and Google Chrome (Windows).
- TalkBack: Verified on Google Chrome (Android).
- Browser Zoom & Magnification: Tested at up to 400% zoom without horizontal scrolling or text overlap.
Feedback & Continuous Improvement
We welcome feedback on the accessibility of PercentageDecreaseCalculator.com. If you encounter any accessibility barrier, difficulty navigating with assistive software, or notice an area where our math outputs could be made clearer, please let us know:
- Contact Channel: Reach out via our Contact & Feedback Form.
- Direct Review: Feedback is reviewed directly by our founder and lead developer, Jack Tyson.
- Response SLA: We investigate accessibility reports and deploy code remediations within 24 to 48 hours.
This statement was reviewed and certified on October 8, 2026.