2026 Supported Browsers Guide for Websites

Which browsers does your websites need to support? The supported browsers list below includes our recommendations based on available web data. It also mirrors guidance from Google and aligns with modern browser compatibility initiatives such as MDN Baseline Compatibility from Mozilla.

In 2026, most organizations should officially support:

Browser	Support
Google Chrome	Latest 2 versions
Microsoft Edge	Latest 2 versions
Mozilla Firefox	Latest 2 versions
Apple Safari (macOS)	Latest 2 versions
Safari on iOS	Current & previous major iOS version
Chrome on Android	Current version

Some organizations, particularly those in government, healthcare, manufacturing, or enterprise environments, may need to support legacy browsers due to internal systems or regulatory requirements. These situations should be evaluated on a case-by-case basis, as they often require additional development, testing, and ongoing maintenance. Because of the increased complexity, many agencies scope legacy browser support as a separate service with associated implementation and maintenance costs.

Why don’t websites support every browser?

Twenty years ago, web developers had to account for dozens of browser versions, each rendering websites differently. Today, Chrome, Edge, Firefox, and Safari automatically update for most users, dramatically reducing compatibility issues. Instead of targeting specific version numbers, most organizations support evergreen browsers, which update automatically with security patches and new web standards.

Web browsers we recommend supporting:

For most business, nonprofit, and government websites, we recommend supporting the latest two major versions of the following browsers:

• Google Chrome (Windows, macOS, Linux)
• Microsoft Edge
• Mozilla Firefox
• Apple Safari (macOS)
• Safari on iPhone and iPad (iOS/iPadOS)
• Google Chrome for Android
• Samsung Internet (recommended for organizations with significant Android mobile traffic)

These browsers represent the overwhelming majority of web traffic worldwide and receive regular security updates, performance improvements, and support for modern web standards.

Browsers such as Opera, Brave, Vivaldi, and Arc are built on Chromium and generally provide an experience comparable to Chrome. While we don’t typically include them in formal browser support policies, websites built for current Chromium browsers will usually function correctly in these browsers as well.policies.

Browsers we no longer support:

• Internet Explorer (retired)
• Legacy Edge (EdgeHTML)
• Old Android Browser
• Unsupported Safari versions
• Old Firefox ESR outside enterprise requirements

Internet Explorer is no longer considered a supported browser for modern websites. Microsoft officially retired Internet Explorer 11 on June 15, 2022, and recommends Microsoft Edge, including IE Mode only for organizations with legacy applications. Google and many other major web platforms have also ended support for Internet Explorer, allowing developers to focus on modern, secure, standards-compliant browsers.

What does “supported browser” actually mean?

When we say a browser is supported, we mean your website has been designed, developed, and tested to provide a reliable experience in that browser. Visitors should be able to access content, navigate the site, complete forms, and use key functionality as intended.

Supported browsers are expected to provide:

• Correct page layouts and responsive design
• Working navigation, forms, and interactive features
• Functional JavaScript and modern web APIs
• Accessible experiences that align with current web standards
• Ongoing security updates from the browser vendor

Supporting a browser does not mean every page will look pixel-for-pixel identical across every device and operating system. Differences in fonts, rendering engines, scrollbars, and operating system styling are normal. The goal is a consistent, accessible, and functional user experience, not visual perfection across every platform. Because the four major browser engines each interpret web standards slightly differently, minor visual differences are expected.

What this means for your business?

Every browser your organization chooses to support affects the cost of designing, developing, testing, and maintaining your website. While supporting modern browsers ensures the best experience for the vast majority of visitors, requiring compatibility with obsolete browsers can significantly increase project complexity without providing meaningful value.

Supporting outdated browsers often results in:

• More quality assurance (QA) to test and troubleshoot browser-specific issues.
• Additional custom CSS and JavaScript to work around unsupported features and inconsistent rendering.
• Slower development as developers spend time creating fallbacks instead of building new functionality.
• Higher long-term maintenance costs because legacy code must be preserved and tested with every update.
• Reduced ability to adopt modern web technologies that improve performance, accessibility, security, and user experience.

By focusing on current, evergreen browsers, organizations can invest their budgets in delivering faster, more secure, and more accessible websites instead of maintaining compatibility with software that has reached the end of its useful life.

CauseLabs browser support recommendation:

At CauseLabs, we recommend supporting the latest two major releases of Chrome, Edge, Firefox, and Safari. This approach follows modern industry standards while allowing us to build faster, more secure, and more accessible websites without spending client budgets accommodating browsers that have reached end of life.

Frequently Asked Questions