Luckily, the international nonprofit World Wide Web Consortium (W3C) brings together smart people who develop open standards to ensure the long-term growth of the Web. They produce recommendations for making websites fair and equally accessible for the highest number of people possible. Their Web Content Accessibility Guidelines (WCAG) 2.1 offer clear guidance for web developers to achieve ADA compliance.
Quantum Dynamix recently completed VisionCorps’ brand new website – built to set the standard for visually-impaired, ADA compliant web design and functionality. Discover what features we incorporated and how users who are blind are adjusting to the new website. This is a case study for ADA online compliance that you can utilize for your own website.
Permanent injunction requiring a change in corporate polices to cause Defendant’s website to become, and remain, accessible Noted was that “The ADA expressly contemplates the type of injunctive relief that the Plaintiffs seek in this action.” The Plaintiff’s lawyers stated that “Because Defendant’s Website has never been accessible and because Defendant does not have, and has never had, a corporate policy that is reasonably calculated to cause its Website to become and remain accessible”. Therefor the Court should require that the Plaintiff accept who the Defendant will use to “assist it in improving the accessibility of its Website”, “ensure that all employees involved in website development and content development be given training”, “Consultant to perform an automated accessibility audit on a periodic basis to evaluate if the Defendant’s Website continues to comply”, “Consultant to perform end-user accessibility/usability testing on a periodic basis”, “Consultant to create an accessibility policy”. Although the Lawyers asked the Court for the above, and it would be extremely time consuming and expensive for the Defendant, the very last part of the Complaint was what the Lawyers were after. Here is what the Lawyers asked the Court for:

The Americans with Disabilities Act (ADA) was first passed in 1990. Twenty years later, the US Department of Justice released an update called the 2010 ADA Standards for Accessible Design. These standards cover the design of physical spaces and have been interpreted to include web locations as well, so it can be difficult for the would-be accessible website designer to use them.
More than 1 billion people live with disabilities; over 57 million reside in the United States, many of whom are unable to participate in everyday activities, such as using computers, mobile phones, tablets, and similar technologies. Devices that should help to improve quality of life for disabled individuals often become a source of frustration due to the inaccessibility of websites. By making your website ADA compliant, you will gain a new and loyal revenue source, and minimize the possibility of legal action against your company.

more than the list of websites, I appreciate the 10-second method you describe. I think it's worth explaining to developers and site owners that there are indeed some simple tricks to quickly assess a web page without having a deep understanding of the WCAG. Personally, I like removing all the CSS styles (with the Web Developer Toolbar in Firefox, shortcut is Shift+Ctrl+S). If the page is still pretty readable, with no clumsy technical code; if it shows a neat heading structure; if lists appear well structured and appropriately used; if all text, is in black (except links), left-aligned, and with its default font and size; then it's been probably properly coded, HTML-wise.

Accessible Poetry comes with a toolbar with buttons to change font size, adjust contrast, disable animations, and more. Also, Skiplinks are available that let users navigate between main areas of the page using the keyboard, and if an image doesn’t have Alt text, you’ll be alerted (you can even add ALT text without leaving this screen). Beyond that, outline effects for objects in focus mode, link underlining, and custom CSS/JS code addition are supported. To access this resourceful toolbar, just click the floating button on the screen.

Leading web developers have been pioneering accessibility and publishing standards since 1994. In 1999, the Web Accessibility Initiative (WAI) and the World Wide Web Consortium (W3C) created the Web Content Accessibility Guidelines (WCAG). In essence, the people who determine how the internet is written came together to advise web developers on how to make websites accessible not only to people with disabilities, but to all web users, including those with highly limited devices.

Attitudes toward digital accessibility have evolved over time. In 2010, the Justice Dept. said they would address the topic. They said the ADA covers web sites, including companies that don’t have brick and mortar presences. They said companies can comply with the law by offering an alternative means of access, so if a web site isn’t ADA compliant, they could offer 24/7 phone access as an example of alternative access.

In an August 2016 case involving the University of California Berkeley, the DOJ ruled that the public university was in violation of ADA Title II (similar to Title III but it instead applies to government organizations) because their YouTube channel’s videos didn’t include captions for hearing impaired visitors. The DOJ found this to violate the ADA as deaf users did not have equal access to the online content.
My request at this point is if the developers of the plugin could please implement a solution like this so that the plugin can be compliant natively, without me having to jump in and edit the code every time the plugin is updated. It doesn’t need to be this solution exactly, as this is admittedly a bit of a rough fix, but if the buttons could be modified with ADA compliance in mind, it would make things a lot easier for sites that use this and have these requirements to meet.
The guidelines are broken down by four main principles: perceivable, operable, understandable, and robust. Under each principle, there are guidelines that provide specific goals a website should work toward. Under each guideline, there are testable success criteria. Those criteria are graded A, AA, or AAA. This grade shows the level of conformity to accessibility, AAA being the highest. The law only requires A and AA guidelines to be met.