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61 rsc.org 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 98%
Best Practices Desktop Score 85%
SEO Desktop Score 82%
Progressive Web App Desktop Score 69%
Performance Mobile Score 59%
Best Practices Mobile Score 85%
SEO Mobile Score 81%
Progressive Web App Mobile Score 70%
Page Authority Authority 57%
Domain Authority Domain Authority 83%
Moz Rank 5.7/10
Bounce Rate Rate 0%
Charset Encoding
Great, language/character encoding is specified: UTF-8
Title Tag 30 Characters
THE ROYAL SOCIETY OF CHEMISTRY
Meta Description 129 Characters
Advancing excellence, connecting chemical scientists and shaping the future of the chemical sciences for the benefit of humanity.
Effective URL 19 Characters
https://www.rsc.org
Excerpt Page content
The Royal Society of Chemistry ...
Keywords Cloud Density
chemistry8 read6 support6 full5 story5 society4 community4 resources4 royal4 january4
Keyword Consistency Keyword density is one of the main terms in SEO
Keyword Freq Title Desc Domain H1 H2
chemistry 8
read 6
support 6
full 5
story 5
society 4
community 4
resources 4
royal 4
january 4
Google Preview Your look like this in google search result
THE ROYAL SOCIETY OF CHEMISTRY
https://www.rsc.org
Advancing excellence, connecting chemical scientists and shaping the future of the chemical sciences for the benefit of humanity.
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: 2018-03-07 / 3 years
Create on: 1993-06-17 / 27 years
Expires on: 2020-06-16 / 3 months 10 days

Network Solutions, LLC ,GB
Registrar Whois Server: whois.networksolutions.com
Registrar URL: http://www.networksolutions.com

Nameservers
A22-67.AKAM.NET
A7-67.AKAM.NET
A3-65.AKAM.NET
A28-64.AKAM.NET
A6-66.AKAM.NET
A1-90.AKAM.NET
Page Size Code & Text Ratio
Document Size: ~43.01 KB
Code Size: ~32.7 KB
Text Size: ~10.32 KB Ratio: 23.98%

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 response times are low (TTFB) Root document took 470 ms
Time To First Byte identifies the time at which your server sends a response
Eliminate render-blocking resources Potential savings of 90 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 0 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
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 94 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 0.8 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 1,433 KB
Large network payloads cost users real money and are highly correlated with long load times
robots.txt is not valid 9 errors found
If your robots.txt file is malformed, crawlers may not be able to understand how you want your website to be crawled or indexed
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 0.6 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 2 vulnerabilities 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
Avoids an excessive DOM size 415 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 0.8 s
First Meaningful Paint measures when the primary content of a page is visible
Keep request counts low and transfer sizes small 75 requests • 1,433 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 44 resources found
A long cache lifetime can speed up repeat visits to your page
Max Potential First Input Delay 30 ms
The maximum potential First Input Delay that your users could experience is the duration, in milliseconds, of the longest task
Time to Interactive 0.8 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
Minify CSS Potential savings of 3 KB
Minifying CSS files can reduce network payload sizes
Remove unused CSS Potential savings of 19 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 219 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

Mobile

Mobile 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
Defer offscreen images Potential savings of 592 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 57 KB
Serve images that are appropriately-sized to save cellular data and improve load time
Speed Index 4.2 s
Speed Index shows how quickly the contents of a page are visibly populated
First CPU Idle 7.0 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).
Avoids enormous network payloads Total size was 1,433 KB
Large network payloads cost users real money and are highly correlated with long load times
robots.txt is not valid 9 errors found
If your robots.txt file is malformed, crawlers may not be able to understand how you want your website to be crawled or indexed
Minimize main-thread work 2.7 s
Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this
First Contentful Paint 2.2 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 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
Avoids an excessive DOM size 415 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 3.4 s
First Meaningful Paint measures when the primary content of a page is visible
Keep request counts low and transfer sizes small 75 requests • 1,433 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 43 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 9.5 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
First Contentful Paint (3G) 4342 ms
First Contentful Paint 3G marks the time at which the first text or image is painted while on a 3G network
Estimated Input Latency 30 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
Tap targets are not sized appropriately 62% 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 97.44% 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 19 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 199 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 160 ms
Time To First Byte identifies the time at which your server sends a response
Eliminate render-blocking resources Potential savings of 380 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 230 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 320 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds.
Reduce JavaScript execution time 1.5 s
Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this

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
x-rch: on whitelist so do nothing
Server: Microsoft-IIS/10.0
x-cdscos: in
x-regen-cutover-path: /
Vary: Accept-Encoding
Cache-Control: private
x-pat: in
Content-Type: text/html; charset=utf-8
Content-Encoding: gzip
Date: Mon, 13 Jan 2020 12:15:04 GMT
x-roeue: run
Transfer-Encoding: chunked
Set-Cookie: ASP.NET_SessionId=1uc3ibhu4ojezy0nnuivgrzz; path=/; HttpOnly
Set-Cookie: RecentlyViewed=Home=%2f; path=/
Set-Cookie: wrawrsatrsrweasrdxsf=3fbea399b1934e589a7e1d034138c626=WUBEw87awMZXw8L2Ini3Jp4SdZu4Uhl20IeeEgfBvyohT68FYykqQMf0cVQbUBDgsVLOvGLwwm6QrUncrWMTmF1djdNaFHaW+Srf37bESTelcWkAagNSzpXMSo69GXUaJ1jerkHbSFL3IuIv89k4/jJz6yEHAxz22E0qpq8Nm5byOUvKL01qHL2b38Svay7/bINXb1EmMjP8xp8NE5HzOA==; expires=Mon, 13-Jan-2020 12:35:05 GMT; path=/; HttpOnly
Set-Cookie: wrawrsatrsrweasrdxsfw2ewasjret=3fbea399b1934e589a7e1d034138c626=WUBEw87awMZXw8L2Ini3Jp4SdZu4Uhl20IeeEgfBvyohT68FYykqQMf0cVQbUBDgsVLOvGLwwm6QrUncrWMTmF1djdNaFHaW+Srf37bESTelcWkAagNSzpXMSo69GXUaJ1jerkHbSFL3IuIv89k4/jJz6yEHAxz22E0qpq8Nm5byOUvKL01qHL2b38Svay7/bINXb1EmMjP8xp8NE5HzOA==; expires=Mon, 13-Jan-2020 12:35:05 GMT; path=/; HttpOnly
x-rorf: run
x-rojux: run
x-rojux: looking
DNS Records DNS Resource Records associated with a hostname
View DNS Records

Comments

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