Accessibility Techniques vs Pixel Contrast Checker

Learn how to build accessible iOS apps by seeing the same component done right and done wrong, side by side. Accessibility Techniques is a working reference of 89 SwiftUI techniques. Every one ships a good and a bad example you can test yourself with VoiceOver turned on, so you hear the difference a proper accessibility label makes and what breaks when focus is not managed. Each technique maps to the WCAG 2.2 success criteria it satisfies. What's inside • 89 techniques in a searchable, alphabetical index • Good and bad examples side by side, each with a Details note explaining exactly why it passes or fails • Coverage of VoiceOver, Voice Control, Dynamic Type, Dark Mode, Reduce Motion, Increase Contrast, Smart Invert, and more • Written documentation for every technique, linked to the relevant WCAG criteria and Apple's developer docs • A companion watchOS app Who it's for Developers, designers, and QA who need to settle a question quickly, verify a real VoiceOver announcement before shipping, or show a teammate why a pattern fails. Open source The full SwiftUI source is on GitHub, so you can read how each example is built and copy what you need. The project also includes a11y-check, a free static analysis tool that scans your own Swift code for accessibility issues — 43 rules across 23 WCAG 2.2 criteria. https://github.com/cvs-health/ios-swiftui-accessibility-techniques Issues, suggestions, and contributions welcome.

Ensure your designs are accessible and legible for everyone. You can analyze images and URLs.Evaluate the color contrast of your web designs, app UIs, and presentation slides based on the WCAG 2.1 international standards. This app provides instant accessibility checks for Standard Text, Large Text, and UI components. You can analyze images and URLs. ■ Key Features Simple Tap-to-Check Just upload an image and tap two points—the background and the text—to instantly calculate the contrast ratio. You can save up to 5 images within the app for quick reference without re-uploading. You can now display a web page by entering a URL and compare by tapping on the page. 300% Zoom Function Magnify your designs up to 300%. Even on a smartphone screen, you can examine fine details and ensure your work is perfect. Precision Magnifying Glass (Loupe) The built-in magnifying glass appears when you tap, allowing you to target and select specific pixels with pinpoint accuracy—ideal for complex designs or gradients. You can set the magnification of the loupe from 2x to 5x. History Management Save your results with a single tap. View your history of contrast ratios and HEX color codes at a glance. (Note: History is maintained during the current session and resets when the app is closed or a new image is selected.) Full WCAG 2.1 Compliance The app automatically determines if your colors meet the 4.5:1 ratio required for accessibility, making it easy to see if your content is truly readable. ■ Who It’s For Web, UI, and UX Designers App Developers & Front-end Engineers Business professionals creating presentations or flyers Any creator focused on inclusive, accessible design ■ Supported Formats JPEG, PNG, and HEIC High-resolution images up to 4000px Import directly from your Photo Library or Files app ■ Privacy First Your privacy is our priority. All image analysis is performed locally on your device. No data is ever uploaded to external servers.