How to Check What Technology a Website Uses

Websites are built from many different technologies, including content management systems, programming languages, hosting services, analytics tools and content delivery networks. Finding out what a website uses can help you research competitors, troubleshoot a site you manage or learn how a particular feature may have been built.

There is no single method that reveals everything. Some technologies are easy to identify from a browser, while others operate behind the scenes or are deliberately concealed. The following approaches can help you build a useful picture.

Use a website technology checker

The quickest option is a technology-detection service or browser extension. Tools such as Wappalyzer and BuiltWith examine publicly available clues and may identify items such as:

• Content management systems, such as WordPress or Drupal
• JavaScript frameworks and libraries
• Analytics and advertising services
• E-commerce platforms
• Web servers, hosting providers and content delivery networks
• Marketing, chat and customer-support tools

Enter the website address into a checker, or install its browser extension to inspect sites as you visit them. Treat the results as indicators rather than a complete inventory: detection tools can miss technologies, report outdated information or mistake one product for another.

Inspect the page source

A browser’s page-source view can reveal clues in the HTML delivered to visitors. On most desktop browsers, right-click the page and select View page source. You can then search the code for terms such as “wp-content”, “shopify”, “react” or “gtag”.

Look for script and stylesheet addresses, comments, metadata and file paths. For example, a path containing “wp-content” may suggest WordPress. A script loaded from a recognisable analytics provider may indicate that the site uses that service.

These clues are not definitive. Websites can remove identifying details, use customised file names or serve their code through a proxy or content delivery network.

Use your browser’s developer tools

Developer tools provide a closer look at what the browser loads. Open them by right-clicking a page and selecting Inspect, or use the relevant keyboard shortcut for your browser. The exact layout varies, but the following tabs are particularly useful:

• Elements: Shows the page’s structure and the HTML currently displayed.
• Network: Lists files and services loaded as the page opens, including scripts, stylesheets, images and requests to third-party domains.
• Sources: Displays many of the scripts and other files used by the page.
• Application or Storage: Shows items such as cookies, local storage and service workers.

Reload the page with the Network tab open to capture requests from the beginning. Filtering by “JS” or “CSS” can make the results easier to review. A domain or file name may point to a particular service, although names are not always clear and some sites bundle or rename their code.

Check HTTP headers

HTTP response headers provide information exchanged between a browser and a website’s server. They may reveal the server software, caching behaviour or security settings. You can view headers in the Network tab of developer tools by selecting the main page request.

Some command-line tools can also display response headers. For example, the following command requests the headers for a page:

curl -I https://example.com

Replace “example.com” with the address you want to check. Not every header identifies the technology behind a site, and server administrators can remove or change identifying headers. Avoid assuming that a header tells the whole story.

Look up DNS and domain information

DNS records can offer clues about a website’s infrastructure. Nameservers, mail records and certain DNS entries may point to a hosting company, DNS provider or content delivery network. Public domain-registration records may also provide information, although privacy-protection services often hide the registrant’s details.

DNS data describes parts of a domain’s configuration, not necessarily the technology used to build its pages. A website might use one provider for DNS, another for hosting and additional services for security or content delivery.

Check visible features and page behaviour

Some technologies can be inferred by observing how a website behaves. An online shop may use a familiar checkout flow; a cookie banner may be provided by a consent-management service; and a page that updates without reloading may rely on JavaScript.

These observations are useful starting points, but they do not prove which product or framework is in use. Similar features can be built with different tools, and sites often combine several systems.

How to check a website you manage

If you own or administer the site, you can usually get more reliable information from its control panel and technical documentation than from public detection tools. Check your hosting dashboard, content management system, package files, deployment settings and analytics account. Your developer or hosting provider may also be able to confirm the server, framework and integrations in use.

For a more complete inventory, compare what you find in the site’s configuration with what is visible in the browser. This can help identify third-party scripts that are no longer needed or services that should be reviewed.

What technology checks can and cannot tell you

A technology checker can provide a helpful snapshot, but it cannot reliably reveal every detail. A website may use a custom-built back end, hide its server information, load different technologies for different visitors or change its setup over time. Results can also be affected by caching, security settings and the particular page being checked.

Use more than one method when accuracy matters, and confirm important findings with the site owner or official documentation. Public checks should remain non-invasive: do not attempt to access restricted areas, bypass security controls or probe a website without permission.

In summary

To check what technology a website uses, start with a detection tool, then verify interesting results using page source, browser developer tools, HTTP headers and DNS information. Each method reveals different clues, so combining them gives a more balanced view. Remember that public evidence is rarely complete, and treat technology detections as informed estimates rather than guaranteed facts.

9 Common Questions About Identifying Website Technologies

1. How to check which platform a website is using?
2. How do I know what type of website it is?
3. How to check website technology chrome extension?
4. How can I check the backend language of a website?
5. What are the 3 technologies of the Web?
6. How do I check if my website is good or not?
7. How do I check the Web technology of a website?
8. What type of technology is a website?
9. How to check website framework?

How to check which platform a website is using?

To check which platform a website is using, enter its address into a website technology checker such as Wappalyzer or BuiltWith. You can also inspect the page source or use your browser’s developer tools to look for platform-specific file paths and scripts—for example, “wp-content” may indicate WordPress. These clues are not always conclusive, as websites can hide or customise their platform details, so compare results from more than one method.

How do I know what type of website it is?

To work out what type of website you’re looking at, consider its main purpose and features. A site selling products is likely an e-commerce website, while one that publishes regular articles may be a blog or news site; portfolios, forums, booking platforms and business websites have their own typical features. Check the homepage, navigation, page content and calls to action for clues. Technology-checking tools can show how the site is built, but they do not necessarily tell you its purpose or category.

How to check website technology chrome extension?

To check a website’s technology using a Chrome extension, install a reputable tool such as Wappalyzer from the Chrome Web Store, then visit the website and click the extension’s icon. It will scan the page and show technologies it can detect, such as the content management system, analytics services, JavaScript frameworks and e-commerce platform. Results are estimates: some technologies may be hidden or missed, so use them as helpful clues rather than a complete technical inventory.

How can I check the backend language of a website?

You can sometimes infer a website’s backend language from technology-detection tools, HTTP headers, error messages or publicly available source maps and documentation, but these clues are often incomplete or hidden. The code visible in your browser mainly shows how the front end works and does not reliably reveal the language running on the server. For a definitive answer, check the site’s technical documentation or ask its owner or developer.

What are the 3 technologies of the Web?

The three core technologies of the Web are HTML, CSS and JavaScript. HTML structures a page and its content, CSS controls its appearance and layout, and JavaScript adds interactive features and behaviour. Together, they enable browsers to display and run most modern websites.

How do I check if my website is good or not?

To check whether your website is performing well, start by asking whether it helps visitors achieve their goals and supports your own objectives. Review it on mobile and desktop, test that links, forms and key features work, and check page speed, accessibility, security and search visibility using tools such as Google PageSpeed Insights and Google Search Console. Analytics can show how people find and use your site, while feedback from real visitors can reveal confusing content or navigation. A good website is not just attractive: it is easy to use, trustworthy, accessible and effective for its intended audience.

How do I check the Web technology of a website?

To check the web technology a website uses, try a technology-detection tool such as Wappalyzer or BuiltWith. You can also inspect the page source and use your browser’s developer tools to review loaded scripts, stylesheets and network requests. These methods may reveal the site’s content management system, frameworks, analytics services or hosting clues, but results are not always complete or definitive.

What type of technology is a website?

A website is usually built using a combination of technologies rather than one single type. These may include a content management system, such as WordPress; front-end languages and frameworks, such as HTML, CSS and JavaScript; a back-end programming language; and hosting, database, analytics or security services. To find out what a particular website uses, try a technology-detection tool or inspect its page source and browser developer tools, keeping in mind that some technologies may not be publicly visible.

How to check website framework?

To check which framework a website uses, start with a technology-detection tool such as Wappalyzer or BuiltWith, which may identify frameworks from publicly visible clues. You can also inspect the site’s source code and use your browser’s developer tools to review loaded JavaScript files, script names and network requests. These clues can suggest frameworks such as React, Vue or Angular, but they are not always conclusive: code may be bundled, renamed or hidden. If you manage the website, check its project files or ask the developer for the most reliable answer.