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Top Technologies

Google Font API
Font Scripts
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14 st-marks.hounslow.sch.uk Last Updated: 6 hours

Success 55% of passed verification steps
Warning 7% of total warning
Errors 38% of total errors, require fast action

Desktop

Mobile

Performance Desktop Score 93%
Best Practices Desktop Score 100%
SEO Desktop Score 85%
Performance Mobile Score 80%
Best Practices Mobile Score 100%
SEO Mobile Score 85%
Page Authority Authority 0%
Domain Authority Domain Authority 0%
Moz Rank 0.0/10
Bounce Rate Rate 0%
Title Tag 32 Characters
ST MARK'S CATHOLIC SCHOOL - HOME
Meta Description 0 Characters
NO DATA
Effective URL 36 Characters
https://www.st-marks.hounslow.sch.uk
Excerpt Page content
St Mark's Catholic School - Home Skip to content ↓ Menu Cl...
Keywords Cloud Density
more13 year10 catholic10 details9 school9 june7 information5 mark5 news4 technology4
Keyword Consistency Keyword density is one of the main terms in SEO
Keyword Freq Title Desc Domain H1 H2
more 13
year 10
catholic 10
details 9
school 9
june 7
information 5
mark 5
news 4
technology 4
Google Preview Your look like this in google search result
ST MARK'S CATHOLIC SCHOOL - HOME
https://www.st-marks.hounslow.sch.uk
St Mark's Catholic School - Home Skip to content ↓ Menu Cl...
Page Size Code & Text Ratio
Document Size: ~75.31 KB
Code Size: ~63.91 KB
Text Size: ~11.39 KB Ratio: 15.13%

Social Data

Estimation Traffic and Earnings

8
Unique Visits
Daily
14
Pages Views
Daily
$0
Income
Daily
224
Unique Visits
Monthly
399
Pages Views
Monthly
$0
Income
Monthly
2,592
Unique Visits
Yearly
4,704
Pages Views
Yearly
$0
Income
Yearly

Desktop

Desktop Screenshot
Avoid large layout shifts 3 layout shifts found
These are the largest layout shifts observed on the page. Each table item represents a single layout shift, and shows the element that shifted the most. Below each item are possible root causes that led to the layout shift. Some of these layout shifts may not be included in the CLS metric value due to [windowing](https://web.dev/articles/cls#what_is_cls)
Total Blocking Time 0 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds
Avoid chaining critical requests 35 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
First Contentful Paint 0.8 s
First Contentful Paint marks the time at which the first text or image is painted
Serve images in next-gen formats Est savings of 725 KiB
Image formats like WebP and AVIF often provide better compression than PNG or JPEG, which means faster downloads and less data consumption
Eliminate render-blocking resources Est savings of 490 ms
Resources are blocking the first paint of your page. Consider delivering critical JS/CSS inline and deferring all non-critical JS/styles
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
Enable text compression Est savings of 33 KiB
Text-based resources should be served with compression (gzip, deflate or brotli) to minimize total network bytes
Legacy JavaScript Est savings of 35 KiB
Polyfills and transforms enable legacy browsers to use new JavaScript features. However, many aren't necessary for modern browsers. Consider modifying your JavaScript build process to not transpile [Baseline](https://web.dev/articles/baseline-and-polyfills) features, unless you know you must support legacy browsers
Time to Interactive 1.0 s
Time to Interactive is the amount of time it takes for the page to become fully interactive
Reduce unused JavaScript Est savings of 47 KiB
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity
Efficiently encode images Est savings of 169 KiB
Optimized images load faster and consume less cellular data
Cumulative Layout Shift 0.004
Cumulative Layout Shift measures the movement of visible elements within the viewport
Avoid serving legacy JavaScript to modern browsers Est savings of 11 KiB
Polyfills and transforms enable legacy browsers to use new JavaScript features. However, many aren't necessary for modern browsers. Consider modifying your JavaScript build process to not transpile [Baseline](https://web.dev/baseline) features, unless you know you must support legacy browsers
Speed Index 2.4 s
Speed Index shows how quickly the contents of a page are visibly populated
Avoid an excessive DOM size 1,338 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 Est savings of 9 KiB
Minifying JavaScript files can reduce payload sizes and script parse time
Network Round Trip Times 10 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
Avoids enormous network payloads Total size was 1,601 KiB
Large network payloads cost users real money and are highly correlated with long load times
Use efficient cache lifetimes Est savings of 529 KiB
A long cache lifetime can speed up repeat visits to your page
User Timing marks and measures 3 user timings
Consider instrumenting your app with the User Timing API to measure your app's real-world performance during key user experiences
Largest Contentful Paint element 970 ms
This is the largest contentful element painted within the viewport
Initial server response time was short Root document took 200 ms
Keep the server response time for the main document short because all other requests depend on it
Avoid non-composited animations 45 animated elements found
Animations which are not composited can be janky and increase CLS
Properly size images Est savings of 397 KiB
Serve images that are appropriately-sized to save cellular data and improve load time
Reduce unused CSS Est savings of 13 KiB
Reduce unused rules from stylesheets and defer CSS not used for above-the-fold content to decrease bytes consumed by network activity
Largest Contentful Paint 1.0 s
Largest Contentful Paint marks the time at which the largest text or image is painted
JavaScript execution time 0.1 s
Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this
Serve static assets with an efficient cache policy 23 resources found
A long cache lifetime can speed up repeat visits to your page
Minimizes main-thread work 0.9 s
Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this
Max Potential First Input Delay 40 ms
The maximum potential First Input Delay that your users could experience is the duration of the longest task
Improve image delivery Est savings of 234 KiB
Reducing the download time of images can improve the perceived load time of the page and LCP
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

Mobile

Mobile Screenshot
JavaScript execution time 0.1 s
Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this
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
First Contentful Paint 2.8 s
First Contentful Paint marks the time at which the first text or image is painted
Avoids enormous network payloads Total size was 1,603 KiB
Large network payloads cost users real money and are highly correlated with long load times
Largest Contentful Paint 3.8 s
Largest Contentful Paint marks the time at which the largest text or image is painted
User Timing marks and measures 3 user timings
Consider instrumenting your app with the User Timing API to measure your app's real-world performance during key user experiences
Avoid non-composited animations 45 animated elements found
Animations which are not composited can be janky and increase CLS
Avoid an excessive DOM size 1,338 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)
Speed Index 5.2 s
Speed Index shows how quickly the contents of a page are visibly populated
Document uses legible font sizes 93.33% 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
Eliminate render-blocking resources Est savings of 1,770 ms
Resources are blocking the first paint of your page. Consider delivering critical JS/CSS inline and deferring all non-critical JS/styles
Avoid chaining critical requests 35 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
Improve image delivery Est savings of 307 KiB
Reducing the download time of images can improve the perceived load time of the page and LCP
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 Est savings of 316 KiB
Consider lazy-loading offscreen and hidden images after all critical resources have finished loading to lower time to interactive
Legacy JavaScript Est savings of 35 KiB
Polyfills and transforms enable legacy browsers to use new JavaScript features. However, many aren't necessary for modern browsers. Consider modifying your JavaScript build process to not transpile [Baseline](https://web.dev/articles/baseline-and-polyfills) features, unless you know you must support legacy browsers
Minify JavaScript Est savings of 9 KiB
Minifying JavaScript files can reduce payload sizes and script parse time
Cumulative Layout Shift 0.014
Cumulative Layout Shift measures the movement of visible elements within the viewport
Avoid long main-thread tasks 1 long task found
Lists the longest tasks on the main thread, useful for identifying worst contributors to input delay
Serve images in next-gen formats Est savings of 730 KiB
Image formats like WebP and AVIF often provide better compression than PNG or JPEG, which means faster downloads and less data consumption
Use efficient cache lifetimes Est savings of 529 KiB
A long cache lifetime can speed up repeat visits to your page
Max Potential First Input Delay 50 ms
The maximum potential First Input Delay that your users could experience is the duration of the longest task
Reduce unused CSS Est savings of 15 KiB
Reduce unused rules from stylesheets and defer CSS not used for above-the-fold content to decrease bytes consumed by network activity
Network Round Trip Times 10 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
Properly size images Est savings of 498 KiB
Serve images that are appropriately-sized to save cellular data and improve load time
Avoid serving legacy JavaScript to modern browsers Est savings of 11 KiB
Polyfills and transforms enable legacy browsers to use new JavaScript features. However, many aren't necessary for modern browsers. Consider modifying your JavaScript build process to not transpile [Baseline](https://web.dev/baseline) features, unless you know you must support legacy browsers
Total Blocking Time 0 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds
Enable text compression Est savings of 33 KiB
Text-based resources should be served with compression (gzip, deflate or brotli) to minimize total network bytes
Minimizes main-thread work 1.2 s
Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this
Initial server response time was short Root document took 180 ms
Keep the server response time for the main document short because all other requests depend on it
Avoid large layout shifts 4 layout shifts found
These are the largest layout shifts observed on the page. Each table item represents a single layout shift, and shows the element that shifted the most. Below each item are possible root causes that led to the layout shift. Some of these layout shifts may not be included in the CLS metric value due to [windowing](https://web.dev/articles/cls#what_is_cls)
Reduce unused JavaScript Est savings of 47 KiB
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity
Time to Interactive 3.8 s
Time to Interactive is the amount of time it takes for the page to become fully interactive
Efficiently encode images Est savings of 166 KiB
Optimized images load faster and consume less cellular data
Largest Contentful Paint element 3,830 ms
This is the largest contentful element painted within the viewport
Serve static assets with an efficient cache policy 23 resources found
A long cache lifetime can speed up repeat visits to your page

Speed And Optimization Tips

Website speed has a huge impact on performance, affecting user experience, conversion rates and even rankings. ‪‬‬By reducing page load-times, users are less likely to get distracted and the search engines are more likely to reward you by ranking you
Title Website
Congratulations! Your title is optimized
Description Website
Warning! Your description is not optimized
Robots.txt
Congratulations! Your site have a robots.txt file
Sitemap.xml
Warning! Not found a sitemap file for your website
SSL Secure
Congratulations! Your site have Support to HTTPS
Headings
Congratulations! You are using your H1 and H2 tags in your site
Blacklist
Congratulations! Your site is not listed in a blacklist
W3C Validator
Warning! Your site have errors W3C
Accelerated Mobile Pages (AMP)
Warning! Your site not have AMP Version
Domain Authority
Warning! Domain Authority of your website is slow. It is good to have domain authority more than 25.
GZIP Compress
Warning! Your site not is compressed, this can make slower response for the visitors
Favicon
Congratulations! Your website appears to have a favicon.
Broken Links
Congratulations! You not have broken links View links

Alexa Rank

99,999,999

Global Rank

99,999,999

-
Traffic
Search

Domain Available

Domain (TDL) and Typo Status
st-marks.hounslow.sch.co Already Registered
st-marks.hounslow.sch.us Already Registered
st-marks.hounslow.sch.com Already Registered
st-marks.hounslow.sch.org Already Registered
st-marks.hounslow.sch.net Available
s-marks.hounslow.sch.uk Available
wt-marks.hounslow.sch.uk Available
xt-marks.hounslow.sch.uk Available

Information Server

Response Header HTTP headers carry information about the client browser, the requested page and the server
HTTP/1.1 200 OK
cache-control: private, no-cache, must-revalidate,private, no-cache, must-revalidate,private
pragma: no-cache,no-cache
content-type: text/html
content-encoding: gzip
content-language: en-gb
x-cookiemodified: true
w: OVW1
provider: e4education
x-frame-options: SAMEORIGIN
x-content-type-options: nosniff
content-security-policy: frame-ancestors 'self'
referrer-policy: origin-when-cross-origin
date: Sat, 24 May 2025 13:37:13 GMT
content-length: 13671
x-caches: ovc1
vary:
x-cache: H
age: 0
strict-transport-security: max-age=31536000 ; includeSubDomains
accept-ranges: bytes
DNS Records DNS Resource Records associated with a hostname
View DNS Records