Ucl.ac.uk - SEO Checker - Website Review

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19 ucl.ac.uk Last Updated: 1 year

Success 63% of passed verification steps

Warning 7% of total warning

Errors 30% of total errors, require fast action

Mobile

Performance Desktop Score 41%

Best Practices Desktop Score 77%

SEO Desktop Score 100%

Progressive Web App Desktop Score 31%

Performance Mobile Score 5%

Best Practices Mobile Score 77%

SEO Mobile Score 98%

Progressive Web App Mobile Score 33%

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 32 Characters

UCL - LONDON'S GLOBAL UNIVERSITY

Meta Description 130 Characters

UCL is the number one London university for Research Strength (REF2014), recognised for its academic excellence and global impact.

Effective URL 21 Characters

https://www.ucl.ac.uk

Excerpt Page content

UCL - London's Global University ...

Google Preview Your look like this in google search result

UCL - LONDON'S GLOBAL UNIVERSITY

https://www.ucl.ac.uk

UCL is the number one London university for Research Strength (REF2014), recognised for its academic excellence and global impact.

Robots.txt File Detected

http://ucl.ac.uk/robots.txt

Sitemap.xml File No Found

http://ucl.ac.uk/sitemap.xml

Page Size Code & Text Ratio

Document Size: ~70.13 KB

Code Size: ~39.39 KB

Text Size: ~30.74 KB Ratio: 43.83%

Estimation Traffic and Earnings

Only Registered Users

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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

Minimize third-party usage Third-party code blocked the main thread for 90 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 20 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 1,903 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 1,420 KB

Serve images that are appropriately-sized to save cellular data and improve load time

Speed Index 3.0 s

Speed Index shows how quickly the contents of a page are visibly populated

First CPU Idle 3.2 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).

Avoid enormous network payloads Total size was 4,835 KB

Large network payloads cost users real money and are highly correlated with long load times

Minimize main-thread work 2.2 s

Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this

First Contentful Paint 1.6 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 5 vulnerabilities detected

Some third-party scripts may contain known security vulnerabilities that are easily identified and exploited by attackers

Avoid chaining critical requests 30 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 737 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 83 KB

Minifying JavaScript files can reduce payload sizes and script parse time

First Meaningful Paint 1.6 s

First Meaningful Paint measures when the primary content of a page is visible

Keep request counts low and transfer sizes small 159 requests • 7,900 KB

To set budgets for the quantity and size of page resources, add a budget.json file

Use video formats for animated content Potential savings of 102 KB

Large GIFs are inefficient for delivering animated content. Consider using MPEG4/WebM videos for animations and PNG/WebP for static images instead of GIF to save network bytes

Serve static assets with an efficient cache policy 75 resources found

A long cache lifetime can speed up repeat visits to your page

Max Potential First Input Delay 70 ms

The maximum potential First Input Delay that your users could experience is the duration, in milliseconds, of the longest task

Time to Interactive 5.5 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

Page load is not fast enough on mobile networks Interactive on simulated mobile network at 25.8 s

A fast page load over a cellular network ensures a good mobile user experience

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

Minify CSS Potential savings of 41 KB

Minifying CSS files can reduce network payload sizes

Remove unused CSS Potential savings of 171 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 1,811 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

Reduce server response times (TTFB) Root document took 910 ms

Time To First Byte identifies the time at which your server sends a response

Eliminate render-blocking resources Potential savings of 970 ms

Resources are blocking the first paint of your page. Consider delivering critical JS/CSS inline and deferring all non-critical JS/styles

Enable text compression Potential savings of 275 KB

Text-based resources should be served with compression (gzip, deflate or brotli) to minimize total network bytes

Efficiently encode images Potential savings of 697 KB

Optimized images load faster and consume less cellular data

Mobile

Minify JavaScript Potential savings of 83 KB

Minifying JavaScript files can reduce payload sizes and script parse time

First Meaningful Paint 6.1 s

First Meaningful Paint measures when the primary content of a page is visible

Keep request counts low and transfer sizes small 167 requests • 8,158 KB

To set budgets for the quantity and size of page resources, add a budget.json file

Use video formats for animated content Potential savings of 102 KB

Large GIFs are inefficient for delivering animated content. Consider using MPEG4/WebM videos for animations and PNG/WebP for static images instead of GIF to save network bytes

Serve static assets with an efficient cache policy 81 resources found

A long cache lifetime can speed up repeat visits to your page

Max Potential First Input Delay 390 ms

The maximum potential First Input Delay that your users could experience is the duration, in milliseconds, of the longest task

Time to Interactive 27.2 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 27.2 s

A fast page load over a cellular network ensures a good mobile user experience

Estimated Input Latency 180 ms

First Contentful Paint (3G) 13305 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 41 KB

Minifying CSS files can reduce network payload sizes

Tap targets are not sized appropriately 85% 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 99.39% 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 153 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 1,829 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 1 user timing

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 630 ms

Time To First Byte identifies the time at which your server sends a response

Eliminate render-blocking resources Potential savings of 3,630 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 697 KB

Optimized images load faster and consume less cellular data

Enable text compression Potential savings of 275 KB

Text-based resources should be served with compression (gzip, deflate or brotli) to minimize total network bytes

Reduce the impact of third-party code Third-party code blocked the main thread for 2,260 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 1,440 ms

Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds.

Reduce JavaScript execution time 6.1 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 2,159 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 962 KB

Serve images that are appropriately-sized to save cellular data and improve load time

Speed Index 13.3 s

Speed Index shows how quickly the contents of a page are visibly populated

First CPU Idle 16.1 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).

Avoid enormous network payloads Total size was 8,085 KB

Large network payloads cost users real money and are highly correlated with long load times

Minimize main-thread work 10.4 s

Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this

First Contentful Paint 6.1 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 5 vulnerabilities detected

Some third-party scripts may contain known security vulnerabilities that are easily identified and exploited by attackers

Avoid chaining critical requests 30 chains found

Avoids an excessive DOM size 806 elements

Speed And Optimization Tips

Only Registered Users

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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, 16 Dec 2019 21:52:04 GMT
X-Content-Type-Options: nosniff
Content-Language: en
X-Frame-Options: SAMEORIGIN
Link: ; rel="canonical"
Content-Type: text/html; charset=utf-8
Cache-Control: max-age=9600, no-cache
Age: 31160
Content-Length: 93747
Via: 1.1 www.ucl.ac.uk
X-Frontend: wwwr-b.ucl.ac.uk
Connection: close

DNS Records DNS Resource Records associated with a hostname

View DNS Records

Type	Name	Value	Class	TTL
A	ucl.ac.uk	144.82.250.24	IN	7199
NS	ucl.ac.uk	ns1.cs.ucl.ac.uk	IN	86400
NS	ucl.ac.uk	dns-ns1.ucl.ac.uk	IN	86400
NS	ucl.ac.uk	ns2.ja.net	IN	86400
NS	ucl.ac.uk	dns-ns0.ucl.ac.uk	IN	86400
MX	ucl.ac.uk	ucl-ac-uk.mail.protection.outlook.com	IN	3600
TXT	ucl.ac.uk	adobe-idp-site-verification=9a3d608e-6cfe-427b-9293-29a367710d04	IN	86400
TXT	ucl.ac.uk	QuoVadis=93619e21-851e-4a0c-8b2e-e63de360cbdf	IN	86400
TXT	ucl.ac.uk	atlassian-domain-verification=g-InG/mbc6+5Anw47Pk/jq22zDbpsK2iFnuAs5Vv5vivQWUd28tubN9WUKcX2tSj	IN	86400
TXT	ucl.ac.uk	A2EC2D3-DE3A-4D43-A7BD-532895B87206	IN	86400

Your Website Score is

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19 ucl.ac.uk Last Updated: 1 year

Desktop

Mobile

Estimation Traffic and Earnings

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Technologies

Drupal

jQuery

OWL Carousel

PHP

Twitter

PWA - Manifest

Desktop

Mobile

Speed And Optimization Tips

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Alexa Rank

0

Information Server

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