It’s well-known that the Americans With Disabilities Act (ADA) requires brick-and-mortar businesses be accessible to all patrons. This includes considerations like wheelchair accessibility and Braille or large print for blind and low-vision patrons, among other things. The ADA references “public accommodations,” and outlines 12 categories that essentially covers all types of public-facing businesses. However, the legislation does not address public-facing websites.
If posted on an accessible website, tax forms need to be available to people with disabilities in an accessible format on the same terms that they are available to other members of the public – 24 hours a day, seven days a week, without cost, inconvenience, or delay. A staffed telephone line that sent copies of tax forms to callers through the mail would not provide equal access to people with disabilities because of the delay involved in mailing the forms.
These rules nearly made their way to the Supreme Court in 2019. In 2016 a web accessibility civil suit was filed against Dominos Pizza. In the following years, the case filtered through layers of judgements and appeals, and Dominos eventually appealed to the Supreme Court. Unfortunately, the Supreme Court declined the case and returned it to a lower court. Though this provides no final clarification, the ruling by a lower court in favor of the plaintiff supports the legal requirements for web accessibility.
State and local governments will often post documents on their websites using Portable Document Format (PDF). But PDF documents, or those in other image based formats, are often not accessible to blind people who use screen readers and people with low vision who use text enlargement programs or different color and font settings to read computer displays.

Poorly designed websites can create unnecessary barriers for people with disabilities, just as poorly designed buildings prevent some people with disabilities from entering. Access problems often occur because website designers mistakenly assume that everyone sees and accesses a webpage in the same way. This mistaken assumption can frustrate assistive technologies and their users. Accessible website design recognizes these differences and does not require people to see, hear, or use a standard mouse in order to access the information and services provided.
There are many companies out there who claim they can bring your website up to code in as little as two days. This is simply not possible. It takes going through every page on your website and bringing each variable up to code on that page. It’s not simply a magic button that you press. This could take a single developer many hours if you have a decently sized website, hence the hefty price tag to bring sites up to code.
Videos need to incorporate features that make them accessible to everyone. Provide audio descriptions of images (including changes in setting, gestures, and other details) to make videos accessible to people who are blind or have low vision. Provide text captions synchronized with the video images to make videos and audio tracks accessible to people who are deaf or hard of hearing.

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.
Another important consideration is that the ADA does not allow businesses to simply provide an alternative such as a phone number. Lastly, include accessibility issues as part of your website and mobile strategy. When new technologies are implemented or pages added, part of the process should include the implications for persons with disabilities. 
...the full and equal enjoyment of the goods, services, facilities, or accommodations of any place of "public accommodation" by any person who owns, leases, or operates a place of public accommodation. Public accommodations include most places of lodging (such as inns and hotels), recreation, transportation, education, and dining, along with stores, care providers, and places of public displays.
As you’ve probably figured out by now, the answer is no, because it’s not at all clear how or even if ADA rules will be applied to any particular website. Still, it’s generally a good idea to err on the side of caution. Many states have adopted their own accessibility laws, and the volume of accessibility-related lawsuits filed against websites has ballooned in recent years. Plaintiffs have been more successful in these suits than ever before. With no clearly defined regulations to follow, it is probably not worth it for most companies to gamble that a court will rule in their favor.
Hi Joseph, Thanks for your comment, I think your business idea sounds great and is definitely something you could set up with a website builder! You've got lots of options, depending on your technical ability and budget. Wix has a range of blank templates where you can start from scratch and build your own design, while still keeping the ease of use and customization tools that come with the builder. You can see Wix's blank templates here. For more information on Wix, read our in-depth Wix Review to see if it could be right for you. If you fancy a more hands-on and technical challenge, check out Squarespace's Developer Platform which lets you create a fully custom site - you can either choose a template or build it totally from scratch. You can read our Squarespace Review to find out more on this website builder. The last one I'll recommend having a look at is WordPress - it's known for it's flexibility and if you can code then it really is a blank page for you to make your own! Read our WordPress Review for a better idea of what you can do with this popular platform. I hope that's helped, do let us know how you get on with the pet portrait painting business! Thanks for reading, Lucy
The words in the tag should be more than a description. They should provide a text equivalent of the image. In other words, the tag should include the same meaningful information that other users obtain by looking at the image. In the example of the mayor’s picture, adding an “alt” tag with the words “Photograph of Mayor Jane Smith” provides a meaningful description.