Braile File Conversion

https://www.robobraille.org/

Web Developer Toolbar

https://chrome.google.com/webstore/detail/web-developer/bfbameneiokkgbdmiekhjnmfkcnldhhm
https://addons.mozilla.org/en-GB/firefox/addon/web-developer/

Useful for seeing what order information appears in and for checking the alternative text on images is good enough to be understandable.

WAVE Web Accessibility Evaluation Tool

https://wave.webaim.org/extension/

Useful for seeing where your web page may be failing and potential solutions.

AXE Development Tools (Browser Extension)

https://www.deque.com/axe/

Photosensitive Epilepsy Analysis Tool

https://trace.umd.edu/peat/

Colour Contrast Tool

https://www.tpgi.com/color-contrast-checker/

Useful tool for Windows and Mac which allows you to check colour contrast on various elements.

Online Colour Contrast Checker

WCAG

Silktide

https://silktide.com/resources/toolbar/

Quick Reference Guide to WCAG 2.1

https://www.w3.org/WAI/WCAG21/quickref/

https://www.w3.org/WAI/planning-and-managing/