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19 elsevier.es Last Updated: 11 months

Success 54% of passed verification steps
Warning 23% of total warning
Errors 23% of total errors, require fast action

Desktop

Mobile

Performance Desktop Score 96%
Best Practices Desktop Score 77%
SEO Desktop Score 100%
Progressive Web App Desktop Score 58%
Performance Mobile Score 61%
Best Practices Mobile Score 77%
SEO Mobile Score 99%
Progressive Web App Mobile Score 59%
Page Authority Authority 0%
Domain Authority Domain Authority 0%
Moz Rank 0.0/10
Bounce Rate Rate 0%
Charset Encoding
Great, language/character encoding is specified: UTF-8
Title Tag 81 Characters
ELSEVIER | UNA EMPRESA DE ANÁLISIS DE LA INFORMACIÓN | IMPULSAMOS EL CONOCIMIENTO
Meta Description 206 Characters
Elsevier es una empresa de análisis de la información global que ayuda a las instituciones y a los profesionales a hacer progresos científicos, avanzar en la asistencia sanitaria y a mejorar su rendimiento.
Effective URL 30 Characters
https://www.elsevier.com/es-es
Excerpt Page content
Elsevier | Una empresa de análisis de la información | Impulsamos el conocimiento Skip to content ...
Keywords Cloud Density
elsevier13 para10 soluciones9 productos7 libros7 revistas6 autores6 destacados5 información5 solutions4
Keyword Consistency Keyword density is one of the main terms in SEO
Keyword Freq Title Desc Domain H1 H2
elsevier 13
para 10
soluciones 9
productos 7
libros 7
revistas 6
autores 6
destacados 5
información 5
solutions 4
Google Preview Your look like this in google search result
ELSEVIER | UNA EMPRESA DE ANÁLISIS DE LA INFORMACIÓN | IMPUL
https://www.elsevier.com/es-es
Elsevier es una empresa de análisis de la información global que ayuda a las instituciones y a los profesionales a hacer progresos científicos, avanza
Robots.txt File Detected
Sitemap.xml File Detected
Page Size Code & Text Ratio
Document Size: ~88.96 KB
Code Size: ~77.68 KB
Text Size: ~11.27 KB Ratio: 12.67%

Estimation Traffic and Earnings

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Desktop

Desktop Screenshot
First Meaningful Paint 1.0 s
First Meaningful Paint measures when the primary content of a page is visible
Keep request counts low and transfer sizes small 57 requests • 651 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 29 resources found
A long cache lifetime can speed up repeat visits to your page
Max Potential First Input Delay 150 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
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
Remove unused CSS Potential savings of 58 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 22 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 130 ms
Time To First Byte identifies the time at which your server sends a response
Eliminate render-blocking resources Potential savings of 310 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 5 KB
Optimized images load faster and consume less cellular data
Minimize third-party usage Third-party code blocked the main thread for 80 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 110 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds.
JavaScript execution time 0.3 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 19 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 23 KB
Serve images that are appropriately-sized to save cellular data and improve load time
Speed Index 1.0 s
Speed Index shows how quickly the contents of a page are visibly populated
First CPU Idle 1.2 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 651 KB
Large network payloads cost users real money and are highly correlated with long load times
Minimizes main-thread work 0.8 s
Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this
First Contentful Paint 0.9 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 4 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 565 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

Mobile

Mobile Screenshot
Serve static assets with an efficient cache policy 29 resources found
A long cache lifetime can speed up repeat visits to your page
Max Potential First Input Delay 560 ms
The maximum potential First Input Delay that your users could experience is the duration, in milliseconds, of the longest task
Time to Interactive 7.0 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
Estimated Input Latency 170 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) 6912 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 98% 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 100% 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 59 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 22 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 50 ms
Time To First Byte identifies the time at which your server sends a response
Eliminate render-blocking resources Potential savings of 1,300 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 5 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 790 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 1,270 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds.
Reduce JavaScript execution time 1.8 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 127 KB
Consider lazy-loading offscreen and hidden images after all critical resources have finished loading to lower time to interactive
Speed Index 3.8 s
Speed Index shows how quickly the contents of a page are visibly populated
First CPU Idle 6.4 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 651 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 3.8 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 4 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 565 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 4.0 s
First Meaningful Paint measures when the primary content of a page is visible
Keep request counts low and transfer sizes small 57 requests • 651 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
Vary: Accept-Encoding
Vary: Accept-Encoding
X-Cache: HIT from squizedge.net
Cache-Control: max-age=0, private
Server: openresty
X-Content-Type-Options: nosniff
Age: 27030
X-UA-Compatible: IE=edge,chrome=1
Date: Mon, 23 Dec 2019 10:59:36 GMT
Via: 1.1 squizedge.net
X-Frame-Options: SAMEORIGIN
X-upgrade-enabled: off
Last-Modified: Fri, 20 Dec 2019 16:22:44 GMT
Set-Cookie: elsevier_user_country=GB; Domain=www.elsevier.com; Path=/
X-Request-ID: 400b883d-0fe8-49e9-a39e-e363255422cd
Content-Encoding: gzip
DNS Records DNS Resource Records associated with a hostname
View DNS Records

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