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Web Frameworks

57 radiopaedia.org Last Updated: 7 months

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

Desktop

Mobile

Performance Desktop Score 81%
Best Practices Desktop Score 85%
SEO Desktop Score 90%
Progressive Web App Desktop Score 31%
Performance Mobile Score 19%
Best Practices Mobile Score 77%
SEO Mobile Score 86%
Progressive Web App Mobile Score 33%
Page Authority Authority 56%
Domain Authority Domain Authority 76%
Moz Rank 5.6/10
Bounce Rate Rate 0%
Charset Encoding
Great, language/character encoding is specified: UTF-8
Title Tag 64 Characters
RADIOPAEDIA.ORG, THE WIKI-BASED COLLABORATIVE RADIOLOGY RESOURCE
Meta Description 61 Characters
Radiopaedia.org, the online collaborative radiology resource.
Effective URL 27 Characters
https://radiopaedia.org:443
Excerpt Page content
Radiopaedia.org, the wiki-based collaborative Radiology resource ...
Keywords Cloud Density
radiopaedia17 cases15 radiology12 articles12 more9 free9 medical8 case7 find6 help5
Keyword Consistency Keyword density is one of the main terms in SEO
Keyword Freq Title Desc Domain H1 H2
radiopaedia 17
cases 15
radiology 12
articles 12
more 9
free 9
medical 8
case 7
find 6
help 5
Google Preview Your look like this in google search result
RADIOPAEDIA.ORG, THE WIKI-BASED COLLABORATIVE RADIOLOGY RESO
https://radiopaedia.org:443
Radiopaedia.org, the online collaborative radiology resource.
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: 2019-09-17 / 1 year
Create on: 2007-01-11 / 14 years
Expires on: 2020-01-11 / 10 months 17 days

Amazon Registrar, Inc. ,US
Registrar Whois Server: whois.registrar.amazon.com
Registrar URL: registrar.amazon.com

Nameservers
EMILY.NS.CLOUDFLARE.COM
DARWIN.NS.CLOUDFLARE.COM
Page Size Code & Text Ratio
Document Size: ~42.11 KB
Code Size: ~28.96 KB
Text Size: ~13.15 KB Ratio: 31.23%

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
Estimated Input Latency 60 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
Remove unused CSS Potential savings of 80 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 1,018 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 6 user timings
Consider instrumenting your app with the User Timing API to measure your app's real-world performance during key user experiences
Reduce server response times (TTFB) Root document took 770 ms
Time To First Byte identifies the time at which your server sends a response
Eliminate render-blocking resources Potential savings of 420 ms
Resources are blocking the first paint of your page. Consider delivering critical JS/CSS inline and deferring all non-critical JS/styles
Efficiently encode images Potential savings of 54 KB
Optimized images load faster and consume less cellular data
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 290 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds.
Reduce JavaScript execution time 1.7 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 1,173 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
Properly size images Potential savings of 1,627 KB
Serve images that are appropriately-sized to save cellular data and improve load time
Speed Index 1.9 s
Speed Index shows how quickly the contents of a page are visibly populated
First CPU Idle 2.3 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).
Avoid enormous network payloads Total size was 3,962 KB
Large network payloads cost users real money and are highly correlated with long load times
Minimize main-thread work 3.0 s
Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this
First Contentful Paint 1.0 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 2 vulnerabilities detected
Some third-party scripts may contain known security vulnerabilities that are easily identified and exploited by attackers
Avoid chaining critical requests 23 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
Avoids an excessive DOM size 634 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)
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 146 requests • 3,962 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 37 resources found
A long cache lifetime can speed up repeat visits to your page
Max Potential First Input Delay 450 ms
The maximum potential First Input Delay that your users could experience is the duration, in milliseconds, of the longest task
Time to Interactive 3.0 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 on simulated mobile network at 22.9 s
A fast page load over a cellular network ensures a good mobile user experience

Mobile

Mobile Screenshot
Tap targets are not sized appropriately 33% 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 95.5% 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 80 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 1,402 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 6 user timings
Consider instrumenting your app with the User Timing API to measure your app's real-world performance during key user experiences
Reduce server response times (TTFB) Root document took 830 ms
Time To First Byte identifies the time at which your server sends a response
Eliminate render-blocking resources Potential savings of 1,940 ms
Resources are blocking the first paint of your page. Consider delivering critical JS/CSS inline and deferring all non-critical JS/styles
Efficiently encode images Potential savings of 54 KB
Optimized images load faster and consume less cellular data
Reduce the impact of third-party code Third-party code blocked the main thread for 650 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 1,590 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds.
Reduce JavaScript execution time 6.4 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 1,702 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 1,606 KB
Serve images that are appropriately-sized to save cellular data and improve load time
Speed Index 9.0 s
Speed Index shows how quickly the contents of a page are visibly populated
First CPU Idle 16.0 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).
Avoid enormous network payloads Total size was 4,513 KB
Large network payloads cost users real money and are highly correlated with long load times
Minimize main-thread work 9.5 s
Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this
First Contentful Paint 4.0 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 2 vulnerabilities detected
Some third-party scripts may contain known security vulnerabilities that are easily identified and exploited by attackers
Avoid chaining critical requests 22 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
Avoids an excessive DOM size 618 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)
First Meaningful Paint 4.0 s
First Meaningful Paint measures when the primary content of a page is visible
Keep request counts low and transfer sizes small 148 requests • 4,513 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 38 resources found
A long cache lifetime can speed up repeat visits to your page
Max Potential First Input Delay 360 ms
The maximum potential First Input Delay that your users could experience is the duration, in milliseconds, of the longest task
Time to Interactive 22.0 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 22.0 s
A fast page load over a cellular network ensures a good mobile user experience
Estimated Input Latency 70 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) 8328 ms
First Contentful Paint 3G marks the time at which the first text or image is painted while on a 3G network

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: Tue, 28 Apr 2020 05:45:05 GMT
Content-Type: text/html; charset=utf-8
Connection: keep-alive
Set-Cookie: __cfduid=d14d2b7d28c3f9926ca536cefd03fcd031588052705; expires=Thu, 28-May-20 05:45:05 GMT; path=/; domain=.radiopaedia.org; HttpOnly; SameSite=Lax
X-XSS-Protection: 1; mode=block
X-Content-Type-Options: nosniff
X-Download-Options: noopen
X-Permitted-Cross-Domain-Policies: none
Referrer-Policy: strict-origin-when-cross-origin
Vary: X-UA-Device
P3P: CP="IDC DSP TAIa OUR IND UNI COM NAV INT DEM"
Cache-Control: max-age=0, private, must-revalidate
Set-Cookie: _radiopaedia_session=R1FBN1QzMlJUYmQ2Q0ovbGt5VG4rS2xxVE5FZC9SbTBjOEJEbC9QcFRwZklpZERUWk1HSXd0ZkFsekcrY3p4M1NTS3p3cUFNMmdzVUx2bUVzYXpvbURvd0kyUjVlTjNDNVJaeFBuNGpudVgwWC93L2U5V3RxL2pBNTBtWmZFQXRqV3UxMTlYM3JtYStNZWQ5WWg3eHE2RzBCNmllS1YzZCtvN05zbG1rSnB4d3FReWc0R0hDcVcvTFhOeURiWDI0SS83NlJQOWZESXBpOGhaY0Q1SXFYNjBIMi9aQnhQQVByc1RCRjNESFp1bTBWUEpVYTRLaEhhR0wrd1VQMFhERy0tdVJ1cW1ZdXpUZ3VHWmpzdHFBU1R2Zz09--6f2aa3ef0eb1055cace5d33bc77e5aaacc68cede; path=/; HttpOnly
X-Request-Id: 42f5f65a-e479-42be-ad1f-1669391d024c
X-Runtime: 0.535339
X-Server-Hostname-SSL: radiopaedia-website-production-web-i-027f43eadc1480528
X-Server-Hostname: radiopaedia-website-production-web-i-027f43eadc1480528
CF-Cache-Status: DYNAMIC
Expect-CT: max-age=604800, report-uri="https://report-uri.cloudflare.com/cdn-cgi/beacon/expect-ct"
Server: cloudflare
CF-RAY: 58ae799f4a9b032b-IAD
Content-Encoding: gzip
alt-svc: h3-27=":443"; ma=86400, h3-25=":443"; ma=86400, h3-24=":443"; ma=86400, h3-23=":443"; ma=86400
cf-request-id: 0260ea578d0000032b8017f200000001
DNS Records DNS Resource Records associated with a hostname
View DNS Records

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