robertgabriel.ninja Helperbird Alternatives

Block flashing GIFs that may cause an epileptic seizure

Contrast check and color blindness simulator for Sketch.

Flagsmith lets you manage feature flags and remote config across web, mobile and server side applications. Deliver true Continuous Integration. Get builds out faster. Control who has access to new features. We're Open Source.

Try for free Open Source freemium

Create accessible color systems 🎨

Free tool for testing how good your website is, and what you can do to improve it. Check accessibility, SEO, social media, compliance and more.

Colors that look and work great for everyone.

If you are not suffering from a color vision deficiency it is very hard to imagine how it looks...

Making websites accessible to people with disabilities

paid Free Trial $49.0 / Monthly (For websites under 1,000 unique pages)

From the perspective of a color blind person, some colors are impossible to distinguish.

An accessibility visualization toolkit from Khan Academy

Check the accessibility of text against the WCAG.

Urban dictionary meets Silicon Valley

Modern web accessibility tools for agencies & webmasters

paid Free Trial $49.0 / Monthly (Standard, 3 Websites, Unlimited Pages, Unlimited Page Views)

Use our Colour Blindness Simulator to reveal how your images may appear to users with a variety of...