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Top Technologies

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91 pbs.org Last Updated: 10 months

Success 62% of passed verification steps
Warning 15% of total warning
Errors 23% of total errors, require fast action
Share

Desktop

Mobile

Performance Desktop Score 93%
Best Practices Desktop Score 69%
SEO Desktop Score 91%
Progressive Web App Desktop Score 35%
Performance Mobile Score 44%
Best Practices Mobile Score 77%
SEO Mobile Score 89%
Progressive Web App Mobile Score 37%
Page Authority Authority 70%
Domain Authority Domain Authority 93%
Moz Rank 7.0/10
Bounce Rate Rate 0%
Charset Encoding
Great, language/character encoding is specified: UTF-8
Title Tag 32 Characters
PBS: PUBLIC BROADCASTING SERVICE
Meta Description 201 Characters
Watch full episodes of your favorite PBS shows, explore music and the arts, find in-depth news analysis, and more. Home to Antiques Roadshow, Frontline, NOVA, PBS Newshour, Masterpiece and many others.
Effective URL 19 Characters
https://www.pbs.org
Excerpt Page content
PBS: Public Broadcasting ServiceSkip to Main ContentSearchCloseMenuClosePBSSearchSearch PBSSearchSign InSigned in AsPassportMenu for ...DownMy ListViewing HistorySettings GearProfileSign OutContinue WatchingBrowseHome Shows (Has dropdown)...
Keywords Cloud Density
right23 video18 share16 facebook14 twitter12 shop12 kids11 sign9 more8 poldark8
Keyword Consistency Keyword density is one of the main terms in SEO
Keyword Freq Title Desc Domain H1 H2
right 23
video 18
share 16
facebook 14
twitter 12
shop 12
kids 11
sign 9
more 8
poldark 8
Google Preview Your look like this in google search result
PBS: PUBLIC BROADCASTING SERVICE
https://www.pbs.org
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
Robots.txt File Detected
http://pbs.org/robots.txt
Sitemap.xml File No Found
http://pbs.org/sitemap.xml
Whois Is a query and response protocol that is widely used for querying databases that store the registered users or assignees of an Internet resource, such as a domain name, an IP address block, or an autonomous system
Updated: 2018-03-15 / 3 years
Create on: 1995-04-19 / 25 years
Expires on: 2022-04-20 / 19 months 5 days

CSC Corporate Domains, Inc. ,US
Registrar Whois Server: whois.cscglobal.com
Registrar URL: www.cscglobal.com/global/web/csc/digital-brand

Nameservers
NS3.P10.DYNECT.NET
NS1.P10.DYNECT.NET
NS2.P10.DYNECT.NET
NS4.P10.DYNECT.NET
Page Size Code & Text Ratio
Document Size: ~185.79 KB
Code Size: ~176.22 KB
Text Size: ~9.57 KB Ratio: 5.15%

Estimation Traffic and Earnings

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Technologies

PWA - Manifest



The web app manifest is a simple JSON file that gives you, the developer, the ability to control how your app appears to the user in areas where they would expect to see apps (for example, a mobile device's home screen)
Param name
Param short_name
Param theme_color
#ffffff
Param background_color
#ffffff
Param display
standalone
Manifest is not valid
Your manifest are missing some important params, read more in Web App Manifest

Desktop

Desktop Screenshot
Remove unused CSS Potential savings of 16 KB
Remove dead rules from stylesheets and defer the loading of CSS not used for above-the-fold content to reduce unnecessary bytes consumed by network activity
Uses deprecated APIs 2 warnings found
Deprecated APIs will eventually be removed from the browser
Serve images in next-gen formats Potential savings of 20 KB
Image formats like JPEG 2000, JPEG XR, and WebP often provide better compression than PNG or JPEG, which means faster downloads and less data consumption
User Timing marks and measures 8 user timings
Consider instrumenting your app with the User Timing API to measure your app's real-world performance during key user experiences
Server response times are low (TTFB) Root document took 140 ms
Time To First Byte identifies the time at which your server sends a response
Eliminate render-blocking resources Potential savings of 0 ms
Resources are blocking the first paint of your page. Consider delivering critical JS/CSS inline and deferring all non-critical JS/styles
Minimize third-party usage Third-party code blocked the main thread for 0 ms
Third-party code can significantly impact load performance. Limit the number of redundant third-party providers and try to load third-party code after your page has primarily finished loading
Total Blocking Time 60 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds.
JavaScript execution time 0.7 s
Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this
Server Backend Latencies 0 ms
Server latencies can impact web performance. If the server latency of an origin is high, it's an indication the server is overloaded or has poor backend performance
Defer offscreen images Potential savings of 154 KB
Consider lazy-loading offscreen and hidden images after all critical resources have finished loading to lower time to interactive
Properly size images Potential savings of 32 KB
Serve images that are appropriately-sized to save cellular data and improve load time
Speed Index 1.6 s
Speed Index shows how quickly the contents of a page are visibly populated
First CPU Idle 1.4 s
First CPU Idle marks the first time at which the page's main thread is quiet enough to handle input. [Learn more](https://web.dev/first-cpu-idle).
Avoids enormous network payloads Total size was 1,423 KB
Large network payloads cost users real money and are highly correlated with long load times
Minimizes main-thread work 1.6 s
Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this
First Contentful Paint 0.6 s
First Contentful Paint marks the time at which the first text or image is painted
Avoid chaining critical requests 14 chains found
The Critical Request Chains below show you what resources are loaded with a high priority. Consider reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load
Avoid an excessive DOM size 1,456 elements
A large DOM will increase memory usage, cause longer [style calculations](https://developers.google.com/web/fundamentals/performance/rendering/reduce-the-scope-and-complexity-of-style-calculations), and produce costly [layout reflows](https://developers.google.com/speed/articles/reflow)
Minify JavaScript Potential savings of 6 KB
Minifying JavaScript files can reduce payload sizes and script parse time
First Meaningful Paint 0.6 s
First Meaningful Paint measures when the primary content of a page is visible
Keep request counts low and transfer sizes small 94 requests • 1,423 KB
To set budgets for the quantity and size of page resources, add a budget.json file
Serve static assets with an efficient cache policy 17 resources found
A long cache lifetime can speed up repeat visits to your page
Max Potential First Input Delay 170 ms
The maximum potential First Input Delay that your users could experience is the duration, in milliseconds, of the longest task
Time to Interactive 1.9 s
Time to interactive is the amount of time it takes for the page to become fully interactive
Network Round Trip Times 0 ms
Network round trip times (RTT) have a large impact on performance. If the RTT to an origin is high, it's an indication that servers closer to the user could improve performance
Page load is not fast enough on mobile networks Interactive on simulated mobile network at 11.1 s
A fast page load over a cellular network ensures a good mobile user experience
Estimated Input Latency 20 ms
Estimated Input Latency is an estimate of how long your app takes to respond to user input, in milliseconds, during the busiest 5s window of page load. If your latency is higher than 50 ms, users may perceive your app as laggy

Mobile

Mobile Screenshot
Serve static assets with an efficient cache policy 17 resources found
A long cache lifetime can speed up repeat visits to your page
Max Potential First Input Delay 750 ms
The maximum potential First Input Delay that your users could experience is the duration, in milliseconds, of the longest task
Time to Interactive 11.0 s
Time to interactive is the amount of time it takes for the page to become fully interactive
Network Round Trip Times 0 ms
Network round trip times (RTT) have a large impact on performance. If the RTT to an origin is high, it's an indication that servers closer to the user could improve performance
Page load is not fast enough on mobile networks Interactive at 11.0 s
A fast page load over a cellular network ensures a good mobile user experience
Estimated Input Latency 220 ms
Estimated Input Latency is an estimate of how long your app takes to respond to user input, in milliseconds, during the busiest 5s window of page load. If your latency is higher than 50 ms, users may perceive your app as laggy
First Contentful Paint (3G) 4860 ms
First Contentful Paint 3G marks the time at which the first text or image is painted while on a 3G network
Tap targets are not sized appropriately 68% appropriately sized tap targets
Interactive elements like buttons and links should be large enough (48x48px), and have enough space around them, to be easy enough to tap without overlapping onto other elements
Document uses legible font sizes 91.18% legible text
Font sizes less than 12px are too small to be legible and require mobile visitors to “pinch to zoom” in order to read. Strive to have >60% of page text ≥12px
Remove unused CSS Potential savings of 18 KB
Remove dead rules from stylesheets and defer the loading of CSS not used for above-the-fold content to reduce unnecessary bytes consumed by network activity
Uses deprecated APIs 1 warning found
Deprecated APIs will eventually be removed from the browser
Serve images in next-gen formats Potential savings of 109 KB
Image formats like JPEG 2000, JPEG XR, and WebP often provide better compression than PNG or JPEG, which means faster downloads and less data consumption
User Timing marks and measures 8 user timings
Consider instrumenting your app with the User Timing API to measure your app's real-world performance during key user experiences
Server response times are low (TTFB) Root document took 90 ms
Time To First Byte identifies the time at which your server sends a response
Eliminate render-blocking resources Potential savings of 30 ms
Resources are blocking the first paint of your page. Consider delivering critical JS/CSS inline and deferring all non-critical JS/styles
Reduce the impact of third-party code Third-party code blocked the main thread for 300 ms
Third-party code can significantly impact load performance. Limit the number of redundant third-party providers and try to load third-party code after your page has primarily finished loading
Total Blocking Time 1,100 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds.
Reduce JavaScript execution time 3.3 s
Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this
Server Backend Latencies 0 ms
Server latencies can impact web performance. If the server latency of an origin is high, it's an indication the server is overloaded or has poor backend performance
Defer offscreen images Potential savings of 263 KB
Consider lazy-loading offscreen and hidden images after all critical resources have finished loading to lower time to interactive
Properly size images Potential savings of 30 KB
Serve images that are appropriately-sized to save cellular data and improve load time
Speed Index 6.6 s
Speed Index shows how quickly the contents of a page are visibly populated
First CPU Idle 9.1 s
First CPU Idle marks the first time at which the page's main thread is quiet enough to handle input. [Learn more](https://web.dev/first-cpu-idle).
Avoids enormous network payloads Total size was 1,719 KB
Large network payloads cost users real money and are highly correlated with long load times
Minimize main-thread work 5.8 s
Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this
First Contentful Paint 2.3 s
First Contentful Paint marks the time at which the first text or image is painted
Avoid chaining critical requests 14 chains found
The Critical Request Chains below show you what resources are loaded with a high priority. Consider reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load
Avoid an excessive DOM size 1,456 elements
A large DOM will increase memory usage, cause longer [style calculations](https://developers.google.com/web/fundamentals/performance/rendering/reduce-the-scope-and-complexity-of-style-calculations), and produce costly [layout reflows](https://developers.google.com/speed/articles/reflow)
Minify JavaScript Potential savings of 6 KB
Minifying JavaScript files can reduce payload sizes and script parse time
First Meaningful Paint 2.3 s
First Meaningful Paint measures when the primary content of a page is visible
Keep request counts low and transfer sizes small 90 requests • 1,719 KB
To set budgets for the quantity and size of page resources, add a budget.json file

Speed And Optimization Tips

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Alexa Rank

0

Local Rank: / Users: / PageViews:

Global Rank

Information Server

Response Header HTTP headers carry information about the client browser, the requested page and the server 
HTTP/1.1 200 OK
Content-Type: text/html; charset=utf-8
Connection: keep-alive
Server: nginx
Date: Tue, 26 Nov 2019 15:11:50 GMT
Vary: Accept-Encoding
Expires: Tue, 26 Nov 2019 15:11:54 GMT
Cache-Control: max-age=600
X-Frame-Options: SAMEORIGIN
ETag: W/"47c7fb66d091af31b13d5809ed7a9882"
Vary: Cookie
X-Cache-FS-Status: HIT
X-PBS-fwsrvname: fwcacheproxy4
Content-Encoding: gzip
X-Cache: Miss from cloudfront
Via: 1.1 49de016f50034116a4cf90b737472cdf.cloudfront.net (CloudFront)
X-Amz-Cf-Pop: YTO50-C1
X-Amz-Cf-Id: 0m9NLHEMzBYeKFKvzey0R-cRQE6keKrKk73dMFFlO8nLxxTpi_HfwQ==
DNS Records DNS Resource Records associated with a hostname
View DNS Records
Type Name Value Class TTL
A pbs.org 54.225.198.196 IN 3578
A pbs.org 54.225.206.152 IN 3578
NS pbs.org ns-806.awsdns-36.net IN 7179
NS pbs.org ns-193.awsdns-24.com IN 7179
NS pbs.org ns-1674.awsdns-17.co.uk IN 7179
NS pbs.org ns-1230.awsdns-25.org IN 7179
MX pbs.org mxb-00303201.gslb.pphosted.com IN 278
MX pbs.org mxa-00303201.gslb.pphosted.com IN 278
TXT pbs.org v=spf1 include:stspg-customer.com a:listserv.pbs.org a:smtp1.pbs.org a:smtp2.pbs.org a:servers.mcsv.net include:k12msg.com ip4:184.173.19.244/30 ip4:67.231.153.84 ip4:67.231.145.96 ip4:149.48.225.41 ~all IN 3578
TXT pbs.org status-page-domain-verification=g90gln3s127q IN 3578
TXT pbs.org postman-domain-verification=53d20208c464282ca428dcbd1fbb5b5dde64c4403e704b3e0b41d0c1b115e42012182805567ee40404850c49601fef4553a95bbce02df02cb09136c208abd48f IN 3578
TXT pbs.org google-site-verification=8yJvWAgyzPHlrdB5CGCDjTq0raQf861mwEGE25P_FLQ IN 3578
TXT pbs.org facebook-domain-verification=hxcquifih7vsf9z0u39e2t2ks317j6 IN 3578
TXT pbs.org detectify-verification=1583bf00b85b6570195c4ec81a2625ae IN 3578
TXT pbs.org MS=ms58428140 IN 3578
TXT pbs.org MS=ms14905487 IN 3578
TXT pbs.org Jr4+zjA9dTLAFxFkcph9AFpTVWwXq7oMKDgVMkankOriEatYCDuzU/WQK2Gyuees8j7z+OBI98TsF/2xXAhtPg== IN 3578

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