Accessibility Checker

Scan any website for accessibility issues in seconds — and check color contrast anywhere, even live through your camera.

Accessibility Checker runs the industry-standard axe-core engine against any URL, explains issues in plain language, and turns your audit into an automated WCAG report plus a publishable accessibility statement — with an honest breakdown of what automated testing covers and what still needs human review.

Preparing for the European Accessibility Act (EAA)? Automated checks give you a fast baseline for EAA readiness. Full conformance always requires manual testing, and the app tells you exactly which WCAG criteria it can and cannot check automatically.

Everything runs privately on your device: the sites, images and colors you check never leave your phone.

There are three tools provided:

1. Run an automated accessibility test using AxeCore against a website. This will detect and provide a list of accessibility issues.

2. Focus Order visualizes the keyboard focus (tab) order of any web page, so you can see the sequence keyboard and screen-reader users follow, spot illogical jumps (WCAG 2.4.3), and export the full-page map as an image or PDF.

3. Color Contrast is a tool to measure the contrast between two colors in a screenshot or mobile website, helping ensure your app meets the internationally recognized recommendations in the Web Content Accessibility Guidelines (WCAG), for both versions 2.1 and 3.0 (Silver)

Color Contrast has the following features:
+ Verify that the color contrast between two colors in an app, website or photo is sufficient to pass WCAG 2.1 accessibility guidelines / Section 508.
+ View suggested colors
+ Generate a report that can be shared using SMS, Email or Notes.
+ Verify color contrast directly from Safari and Photos app.

To use Color Contrast

1. Load an image or website by tapping the icon in the top right corner. The image can be an existing image from the Photo Library or a new picture taken with the camera. Enter a URL to load a mobile website.
2. Move each color picker in turn to select two colors.
You can also pan around the image by swiping left/right/up/down or pinch to zoom in/out.
3. The Color Contrast results will be displayed at the bottom of the screen.
4. Tap the 'Share' icon to create a report that can be emailed, added to notes, copied or saved to your Photo Library.

About WCAG 2.2

WCAG 2.2 accessibility guidelines have three levels of compliance, A, AA and AAA. When considering large text (i.e. text which is above 18pt or larger), the minimum AA color contrast ratio is 3:1 and for AAA the ratio is 4.5:1. For normal text, the AA color contrast ratio is 4.5:1 and for AAA the color contrast ratio is 7:1.

For more information about WCAG 2.2, see https://www.w3.org/TR/WCAG22/

* WCAG 3.0 (Silver) *
The W3C Accessibility Guidelines 3.0 (Silver) reference an experimental color algorithm known as S-LUV Advanced Perceptual Contrast (SAPA) or Advanced Perceptual Contrast Algorithm (APCA). This algorithm can be enabled within the app via left-hand menu. To re-iterate, this algorithm is experimental and is likely to change in future.

For more information on SAPC-APCA, visit https://github.com/Myndex/SAPC-APCA/

Copy colors to clipboard

With Color Contrast you can also copy the current color to the clipboard in the follow formats:
- HTML Hex (e.g. #EEFFEE)
- UIColor from RGBA (e.g. UIColor(red:0, green:0, blue:0, alpha:0) )
- UIColor from HSB (e.g UIColor(hue:0, saturation:0, brightness:0, alpha:0))

We are continually improving Accessibility Checker, if you have any questions or feedback, please contact info@accessibleresources.com