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Web Frameworks

67 clinicaltrials.gov Last Updated: 5 months

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

Desktop

Mobile

Performance Desktop Score 95%
Best Practices Desktop Score 85%
SEO Desktop Score 80%
Progressive Web App Desktop Score 58%
Performance Mobile Score 80%
Best Practices Mobile Score 85%
SEO Mobile Score 82%
Progressive Web App Mobile Score 59%
Page Authority Authority 70%
Domain Authority Domain Authority 82%
Moz Rank 7.0/10
Bounce Rate Rate 0%
Title Tag 25 Characters
HOME - CLINICALTRIALS.GOV
Meta Description 0 Characters
NO DATA
Effective URL 30 Characters
https://www.clinicaltrials.gov
Excerpt Page content
Home - ClinicalTrials.gov Hide glossary Glossary Study record managers: refer ...
Keywords Cloud Density
studies27 about14 results13 study12 search12 republic11 learn8 terms7 clinicaltrials7 site7
Keyword Consistency Keyword density is one of the main terms in SEO
Keyword Freq Title Desc Domain H1 H2
studies 27
about 14
results 13
study 12
search 12
republic 11
learn 8
terms 7
clinicaltrials 7
site 7
Google Preview Your look like this in google search result
HOME - CLINICALTRIALS.GOV
https://www.clinicaltrials.gov
Home - ClinicalTrials.gov Hide glossary Glossary Study record managers: refer ...
Robots.txt File Detected
Sitemap.xml File No Found
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 14 days
Page Size Code & Text Ratio
Document Size: ~52.68 KB
Code Size: ~31.87 KB
Text Size: ~20.81 KB Ratio: 39.51%

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
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
Speed Index 1.2 s
Speed Index shows how quickly the contents of a page are visibly populated
First CPU Idle 1.1 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 377 KB
Large network payloads cost users real money and are highly correlated with long load times
Minimizes main-thread work 0.6 s
Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this
First Contentful Paint 0.9 s
First Contentful Paint marks the time at which the first text or image is painted
Avoid chaining critical requests 18 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 1,294 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 13 KB
Minifying JavaScript files can reduce payload sizes and script parse time
First Meaningful Paint 1.1 s
First Meaningful Paint measures when the primary content of a page is visible
Keep request counts low and transfer sizes small 37 requests • 377 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 27 resources found
A long cache lifetime can speed up repeat visits to your page
Max Potential First Input Delay 80 ms
The maximum potential First Input Delay that your users could experience is the duration, in milliseconds, of the longest task
Time to Interactive 1.3 s
Time to interactive is the amount of time it takes for the page to become fully interactive
Links do not have descriptive text 3 links found
Descriptive link text helps search engines understand your content
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
Minify CSS Potential savings of 3 KB
Minifying CSS files can reduce network payload sizes
Server response times are low (TTFB) Root document took 450 ms
Time To First Byte identifies the time at which your server sends a response
Eliminate render-blocking resources Potential savings of 650 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 50 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds.
JavaScript execution time 0.2 s
Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this

Mobile

Mobile Screenshot
Serve static assets with an efficient cache policy 27 resources found
A long cache lifetime can speed up repeat visits to your page
Max Potential First Input Delay 250 ms
The maximum potential First Input Delay that your users could experience is the duration, in milliseconds, of the longest task
Time to Interactive 5.0 s
Time to interactive is the amount of time it takes for the page to become fully interactive
Links do not have descriptive text 3 links found
Descriptive link text helps search engines understand your content
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 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
First Contentful Paint (3G) 6139.5 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 3 KB
Minifying CSS files can reduce network payload sizes
Tap targets are not sized appropriately 90% 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 99.95% 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
Server response times are low (TTFB) Root document took 280 ms
Time To First Byte identifies the time at which your server sends a response
Eliminate render-blocking resources Potential savings of 1,830 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 60 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 260 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds.
JavaScript execution time 0.9 s
Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this
Defer offscreen images Potential savings of 11 KB
Consider lazy-loading offscreen and hidden images after all critical resources have finished loading to lower time to interactive
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
Speed Index 3.4 s
Speed Index shows how quickly the contents of a page are visibly populated
First CPU Idle 3.9 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 377 KB
Large network payloads cost users real money and are highly correlated with long load times
Minimizes main-thread work 2.0 s
Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this
First Contentful Paint 3.1 s
First Contentful Paint marks the time at which the first text or image is painted
Avoid chaining critical requests 18 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 1,294 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 13 KB
Minifying JavaScript files can reduce payload sizes and script parse time
First Meaningful Paint 3.5 s
First Meaningful Paint measures when the primary content of a page is visible
Keep request counts low and transfer sizes small 37 requests • 377 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
Date: Mon, 27 Apr 2020 16:45:03 GMT
Server: Apache
Strict-Transport-Security: max-age=31536000; includeSubDomains; preload
Expires: Mon, 27 Apr 2020 22:45:03 GMT
Content-Type: text/html;charset=UTF-8
Vary: Accept-Encoding
Content-Encoding: gzip
Set-Cookie: Psid=fihzm6CLDTjx1iWVFyz3FQ7V9ghH0gNj-KCzzBCwEBF3NgzqFRhBaRHgyPt; Expires=Tue, 27-Apr-2021 22:33:31 GMT; Path=/; Secure
Set-Cookie: CTOpts=Qihzm6CLDTjx1iWVFyUgzw-R98Fz3R43eiWB; Expires=Mon, 27-Apr-2020 17:05:03 GMT; Path=/; Secure
X-UA-Compatible: IE=Edge
X-XSS-Protection: 1; mode=block
DNS Records DNS Resource Records associated with a hostname
View DNS Records

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