Pbs.org PBS: Public Broadcasting Service

Watch full episodes of your favorite PBS shows, explore music and the arts, find in-depth news analysis, and more. Home to Antiques Roadshow, Frontlin...

pbs.org Desktop Performance
70/100
These metrics represent real-world Chrome users experience viewing pbs.org web page. Reports are focused on loading performance and other critical factors that most affect user experience. Follow our guide to track, optimize, and improve the quality of your web pages.

User Loading Experience

First Input Delay

Largest Contentful Paint

Cumulative Layout Shift

First Contentful Paint

Metrics


Total Blocking Time40/100 410 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds. Learn more.

Speed Index48/100 2.4 s
Speed Index shows how quickly the contents of a page are visibly populated. Learn more.

Largest Contentful Paint82/100 1.5 s
Largest Contentful Paint marks the time at which the largest text or image is painted. Learn More

Time to Interactive91/100 2.4 s
Time to interactive is the amount of time it takes for the page to become fully interactive. Learn more.

First Contentful Paint91/100 0.9 s
First Contentful Paint marks the time at which the first text or image is painted. Learn more.

Cumulative Layout Shift100/100 0.024
Cumulative Layout Shift measures the movement of visible elements within the viewport. Learn more.

Opportunities

These suggestions can help your page load faster. They don't directly affect the Performance score.

Diagnostics

More information about the performance of your application. These numbers don't directly affect the Performance score.

pbs.org Desktop SEO
92/100
These checks ensure that your page is optimized for search engine results ranking. There are additional factors Lighthouse does not check that may affect your search ranking. Learn more. Run these additional validators on your site to check additional SEO best practices.
Crawling and Indexing

To appear in search results, crawlers need access to your app.

pbs.org Desktop Best Practices
77/100
These checks highlight opportunities to improve the overall code health of pbs.org page. Current recommendations will help to make your page fast and secure, to create a good user experience and to avoid deprecated technologies.
General

Trust and Safety

pbs.org Desktop Progressive Web App
37/100
These checks validate the aspects of a Progressive Web App. Learn more. These checks are required by the baseline PWA Checklist but are not automatically checked by Lighthouse. They do not affect your score but it's important that you verify them manually.
Fast and reliable

PWA Optimized

Installable

pbs.org Desktop Accessibility
92/100
These checks highlight opportunities to improve the accessibility of your web app. Only a subset of accessibility issues can be automatically detected so manual testing is also encouraged. These items address areas which an automated testing tool cannot cover. Learn more in our guide on conducting an accessibility review.
ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Contrast

These are opportunities to improve the legibility of your content.

Desktop Speed
81/100
These checks analyze the performance of pbs.org on desktop devices and return PageSpeed score and information on how to improve the load time. What makes a good Progressive Web App?
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