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Top Technologies

Nginx
Web Servers
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Web Frameworks

85 cancer.gov Last Updated: 8 months

Success 78% of passed verification steps
Warning 7% of total warning
Errors 15% of total errors, require fast action

Desktop

Mobile

Performance Desktop Score 97%
Best Practices Desktop Score 77%
SEO Desktop Score 100%
Progressive Web App Desktop Score 58%
Performance Mobile Score 65%
Best Practices Mobile Score 69%
SEO Mobile Score 99%
Progressive Web App Mobile Score 59%
Page Authority Authority 66%
Domain Authority Domain Authority 87%
Moz Rank 6.6/10
Bounce Rate Rate 0%
Charset Encoding
Great, language/character encoding is specified: UTF-8
Title Tag 60 Characters
COMPREHENSIVE CANCER INFORMATION - NATIONAL CANCER INSTITUTE
Meta Description 124 Characters
Accurate, up-to-date, comprehensive cancer information from the U.S. government's principal agency for cancer research.
Effective URL 22 Characters
https://www.cancer.gov
Excerpt Page content
Comprehensive Cancer Information - National Cancer Institute Skip to main content Espa...
Keywords Cloud Density
cancer135 research44 site17 resources16 visit16 about15 health14 treatment14 training12 information11
Keyword Consistency Keyword density is one of the main terms in SEO
Keyword Freq Title Desc Domain H1 H2
cancer 135
research 44
site 17
resources 16
visit 16
about 15
health 14
treatment 14
training 12
information 11
Google Preview Your look like this in google search result
COMPREHENSIVE CANCER INFORMATION - NATIONAL CANCER INSTITUTE
https://www.cancer.gov
Accurate, up-to-date, comprehensive cancer information from the U.S. government's principal agency for cancer research.
Robots.txt File Detected
Sitemap.xml File Detected
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: 1970-01-01 / 51 years
Create on: 1970-01-01 / 51 years
Expires on: 1970-01-01 / 617 months 16 days
Page Size Code & Text Ratio
Document Size: ~90.36 KB
Code Size: ~63.21 KB
Text Size: ~27.16 KB Ratio: 30.05%

Estimation Traffic and Earnings

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Technologies

PWA - Manifest

Manifest is not valid
Your site don't have valid manifest.json, read more in Web App Manifest

Desktop

Desktop Screenshot
Minify CSS Potential savings of 14 KB
Minifying CSS files can reduce network payload sizes
Remove unused CSS Potential savings of 49 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
Serve images in next-gen formats Potential savings of 10 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
Server response times are low (TTFB) Root document took 150 ms
Time To First Byte identifies the time at which your server sends a response
Eliminate render-blocking resources Potential savings of 280 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 80 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds.
JavaScript execution time 0.5 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
Properly size images Potential savings of 99 KB
Serve images that are appropriately-sized to save cellular data and improve load time
Speed Index 1.1 s
Speed Index shows how quickly the contents of a page are visibly populated
First CPU Idle 1.6 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 915 KB
Large network payloads cost users real money and are highly correlated with long load times
Minimizes main-thread work 1.1 s
Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this
First Contentful Paint 0.7 s
First Contentful Paint marks the time at which the first text or image is painted
Includes front-end JavaScript libraries with known security vulnerabilities 1 vulnerability detected
Some third-party scripts may contain known security vulnerabilities that are easily identified and exploited by attackers
Avoid chaining critical requests 12 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 1,625 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 100 KB
Minifying JavaScript files can reduce payload sizes and script parse time
First Meaningful Paint 0.7 s
First Meaningful Paint measures when the primary content of a page is visible
Keep request counts low and transfer sizes small 63 requests • 915 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 34 resources found
A long cache lifetime can speed up repeat visits to your page
Max Potential First Input Delay 200 ms
The maximum potential First Input Delay that your users could experience is the duration, in milliseconds, of the longest task
Time to Interactive 1.8 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
Estimated Input Latency 10 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
Server response times are low (TTFB) Root document took 30 ms
Time To First Byte identifies the time at which your server sends a response
Eliminate render-blocking resources Potential savings of 840 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 110 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 920 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds.
Reduce JavaScript execution time 2.2 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 34 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 89 KB
Serve images that are appropriately-sized to save cellular data and improve load time
Speed Index 3.4 s
Speed Index shows how quickly the contents of a page are visibly populated
First CPU Idle 7.8 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 858 KB
Large network payloads cost users real money and are highly correlated with long load times
Minimize main-thread work 4.8 s
Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this
First Contentful Paint 2.6 s
First Contentful Paint marks the time at which the first text or image is painted
Includes front-end JavaScript libraries with known security vulnerabilities 1 vulnerability detected
Some third-party scripts may contain known security vulnerabilities that are easily identified and exploited by attackers
Avoid chaining critical requests 12 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 1,640 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 100 KB
Minifying JavaScript files can reduce payload sizes and script parse time
First Meaningful Paint 2.7 s
First Meaningful Paint measures when the primary content of a page is visible
Keep request counts low and transfer sizes small 60 requests • 858 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 32 resources found
A long cache lifetime can speed up repeat visits to your page
Max Potential First Input Delay 950 ms
The maximum potential First Input Delay that your users could experience is the duration, in milliseconds, of the longest task
Time to Interactive 8.1 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
Estimated Input Latency 370 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) 5655 ms
First Contentful Paint 3G marks the time at which the first text or image is painted while on a 3G network
Minify CSS Potential savings of 14 KB
Minifying CSS files can reduce network payload sizes
Tap targets are not sized appropriately 93% 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 99.92% 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 49 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

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
Server: nginx
Content-Type: text/html; charset=UTF-8
Content-Length: 17277
X-Drupal-Dynamic-Cache: MISS
Link: ; rel="canonical"
Link: ; rel="alternate"; hreflang="en"
Link: ; rel="alternate"; hreflang="es"
Link: ; rel="revision"
X-UA-Compatible: IE=edge
Content-Language: en
X-Content-Type-Options: nosniff
X-Frame-Options: SAMEORIGIN
Last-Modified: Mon, 06 Jan 2020 19:08:00 GMT
ETag: "1578337680"
X-Generator: Drupal 8 (https://www.drupal.org)
X-Drupal-Cache: MISS
Content-Encoding: gzip
X-Request-ID: v-db107d0e-30b7-11ea-a4c6-53a32a26c61f
X-AH-Environment: 01live
X-Cache-Hits: 165
X-Age: 14656
Accept-Ranges: bytes
Expires: Tue, 07 Jan 2020 21:45:04 GMT
Cache-Control: max-age=0, no-cache
Pragma: no-cache
Date: Tue, 07 Jan 2020 21:45:04 GMT
Connection: keep-alive
Vary: Accept-Encoding
Strict-Transport-Security: max-age=31536000 ; includeSubDomains ; preload
DNS Records DNS Resource Records associated with a hostname
View DNS Records

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