Conduct cross-browser testing, use responsive design practices, validate HTML/CSS, ensure compatibility with older browsers, and utilize tools like BrowserStack to catch potential issues early.

To ensure your website is accessible across all browsers before a project launch: 1. Cross-browser testing: Use tools like BrowserStack or LambdaTest to check compatibility on major browsers (Chrome, Firefox, Safari, Edge). 2. Responsive design: Ensure your site adjusts well on different devices and screen sizes. 3. Validate code: Use W3C Validator to ensure clean, compliant HTML/CSS. 4. JavaScript fallback: Ensure your website functions even if certain scripts fail. 5. Monitor performance: Check load times across browsers.

To ensure your website is accessible across all browsers as the project launch approaches, I implement comprehensive cross-browser testing using tools like BrowserStack or Sauce Labs to identify and fix compatibility issues. I adhere to web standards and use progressive enhancement to ensure functionality remains intact on older browsers. Additionally, I utilize responsive design techniques and regularly validate accessibility compliance with automated tools and manual testing. Collaborating closely with developers helps address any technical constraints promptly, ensuring a seamless and accessible user experience across all platforms.

As with everything else, you must step back and look at the whole first. Yes, using all popular browsers such as Chrome, Safari, Firefox, etc., is a good approach. Tools like BrowserStack are also excellent approaches. W3C tools, CSS normalizers, polyfills, and HTML snapshot and visual comparison tools that you can implement in a CI pipeline are also excellent ways to do it. But first, it's a good idea to have key elements and flows that ensure usability in mind, testing it blindly is not a guarantee of success. Trace out all the key aspects that you want to guarantee you'll deliver maximum value to your users and build a framework around those to ensure the output will be consistent throughout deployments. It will also save time.