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Web Frameworks

91 pbs.org Last Updated: 12 months

Success 62% of passed verification steps

Warning 15% of total warning

Errors 23% of total errors, require fast action

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 / 26 years

Expires on: 2022-04-20 / 17 months 1 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

Only Registered Users

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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

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

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

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

Avoid an excessive DOM size 1,456 elements

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

Your Website Score is

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91 pbs.org Last Updated: 12 months

Desktop

Mobile

Estimation Traffic and Earnings

Sign up for see all features and reviews about this site

Technologies

Amazon Cloudfront

Django

Google Font API

Google Tag Manager

Nginx

Python

PWA - Manifest

Desktop

Mobile

Speed And Optimization Tips

Sign up for see all features and reviews about this site

Alexa Rank

0

Information Server

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