Tools & Wizards About Us
sahfos.ac.uk screenshot

Report Summary

  • 25

    Performance

    Renders faster than
    44% of other websites

  • 40

    Accessibility

    Visual factors better than
    that of 19% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 92

    SEO

    Google-friendlier than
    74% of websites

sahfos.ac.uk

Continuous Plankton Recorder (CPR) Survey | CPR Survey

Page Load Speed

3.1 sec in total

First Response

488 ms

Resources Loaded

2.2 sec

Page Rendered

385 ms

sahfos.ac.uk screenshot

About Website

Visit sahfos.ac.uk now to see the best up-to-date Sahfos content and also check out these interesting facts you probably never knew about sahfos.ac.uk

The Continuous Plankton Recorder (CPR) Survey is an international non-profit organisation, monitoring the oceans since 1931.

Visit sahfos.ac.uk

Key Findings

We analyzed Sahfos.ac.uk page load time and found that the first response time was 488 ms and then it took 2.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.

Performance Metrics

sahfos.ac.uk performance score

25

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value7.3 s

1/100

10%

LCP (Largest Contentful Paint)

Value19.8 s

0/100

25%

SI (Speed Index)

Value11.1 s

6/100

10%

TBT (Total Blocking Time)

Value570 ms

52/100

30%

CLS (Cumulative Layout Shift)

Value0.249

50/100

15%

TTI (Time to Interactive)

Value12.7 s

14/100

10%

Network Requests Diagram

sahfos.ac.uk

488 ms

www.cprsurvey.org

526 ms

css2

43 ms

bootstrap.min.css

32 ms

essentials.css

437 ms

Our browser made a total of 48 requests to load all elements on the main page. We found that 2% of them (1 request) were addressed to the original Sahfos.ac.uk, 90% (43 requests) were made to Cprsurvey.org and 2% (1 request) were made to Fonts.googleapis.com. The less responsive or slowest element that took the longest time to load (915 ms) relates to the external source Cprsurvey.org.

Page Optimization Overview & Recommendations

Page size can be reduced by 2.0 MB (52%)

Content Size

3.8 MB

After Optimization

1.8 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Sahfos.ac.uk main page is 3.8 MB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 70% of websites need less resources to load. Images take 2.5 MB which makes up the majority of the site volume.

HTML Optimization

-85%

Potential reduce by 42.4 kB

  • Original 50.1 kB
  • After minification 33.8 kB
  • After compression 7.7 kB

HTML content can be minified and compressed by a website’s server. The most efficient way is to compress content using GZIP which reduces data amount travelling through the network between server and browser. This page needs HTML code to be minified as it can gain 16.4 kB, which is 33% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 42.4 kB or 85% of the original size.

Image Optimization

-36%

Potential reduce by 885.3 kB

  • Original 2.5 MB
  • After minification 1.6 MB

Image size optimization can help to speed up a website loading time. The chart above shows the difference between the size before and after optimization. Obviously, Sahfos needs image optimization as it can save up to 885.3 kB or 36% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-73%

Potential reduce by 358.3 kB

  • Original 493.8 kB
  • After minification 447.5 kB
  • After compression 135.5 kB

It’s better to minify JavaScript in order to improve website performance. The diagram shows the current total size of all JavaScript files against the prospective JavaScript size after its minification and compression. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 358.3 kB or 73% of the original size.

CSS Optimization

-87%

Potential reduce by 694.8 kB

  • Original 801.2 kB
  • After minification 657.0 kB
  • After compression 106.4 kB

CSS files minification is very important to reduce a web page rendering time. The faster CSS files can load, the earlier a page can be rendered. Sahfos.ac.uk needs all CSS files to be minified and compressed as it can save up to 694.8 kB or 87% of the original size.

Requests Breakdown

Number of requests can be reduced by 19 (46%)

Requests Now

41

After Optimization

22

  • Images
  • JavaScript
  • CSS

The browser has sent 41 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Sahfos. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 12 to 1 for JavaScripts and from 9 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

sahfos.ac.uk

sahfos.ac.uk

488 ms

www.cprsurvey.org

www.cprsurvey.org

526 ms

css2

css2

43 ms

bootstrap.min.css

bootstrap.min.css

32 ms

essentials.css

essentials.css

437 ms

layout.css

layout.css

626 ms

header-1.css

header-1.css

364 ms

green.css

green.css

366 ms

bs-custom.css

bs-custom.css

367 ms

extralayers.css

extralayers.css

466 ms

settings.css

settings.css

632 ms

CPR-Logo-Header.png

CPR-Logo-Header.png

465 ms

MBA-Logo-Header.png

MBA-Logo-Header.png

467 ms

1x1.png

1x1.png

441 ms

jquery-2.1.4.min.js

jquery-2.1.4.min.js

639 ms

jquery.counterup.min.js

jquery.counterup.min.js

460 ms

custom.js

custom.js

460 ms

jquery.validate.min.js

jquery.validate.min.js

528 ms

jquery.validate.unobtrusive.min.js

jquery.validate.unobtrusive.min.js

638 ms

jquery.themepunch.tools.min.js

jquery.themepunch.tools.min.js

641 ms

jquery.themepunch.revolution.min.js

jquery.themepunch.revolution.min.js

638 ms

demo.revolution_slider.js

demo.revolution_slider.js

639 ms

scripts.js

scripts.js

718 ms

js

js

65 ms

Plankton.png

Plankton.png

754 ms

data.png

data.png

640 ms

knowledge.png

knowledge.png

707 ms

database.png

database.png

716 ms

calanus-finmarchicus.png

calanus-finmarchicus.png

753 ms

glynn-gorick.png

glynn-gorick.png

915 ms

david-and-vincent-un-advisor_cropped.png

david-and-vincent-un-advisor_cropped.png

887 ms

icpr-0491.jpg

icpr-0491.jpg

849 ms

cropped_procentrum_micans_image014-alt-1024x768.png

cropped_procentrum_micans_image014-alt-1024x768.png

898 ms

the-laboratory.jpg

the-laboratory.jpg

851 ms

shadow3.png

shadow3.png

296 ms

parallax-bg.jpg

parallax-bg.jpg

346 ms

footer_sprite.png

footer_sprite.png

348 ms

1095

1095

357 ms

font.woff

font.woff

341 ms

font.woff

font.woff

355 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

367 ms

c4m61nF8G8_s6gHhIOX0IYBo_KJ3GmP-.woff

c4m61nF8G8_s6gHhIOX0IYBo_KJ3GmP-.woff

33 ms

bootstrap.min.js

bootstrap.min.js

167 ms

smoothscroll.js

smoothscroll.js

167 ms

gridtile.png

gridtile.png

157 ms

loader.gif

loader.gif

254 ms

revicons.woff

revicons.woff

244 ms

2024_gwr_cpr-in-seabeams-landscape_slider.png

2024_gwr_cpr-in-seabeams-landscape_slider.png

308 ms

Accessibility Review

sahfos.ac.uk accessibility score

40

Accessibility Issues

Names and labels

These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

Buttons do not have an accessible name

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Contrast

These are opportunities to improve the legibility of your content.

Impact

Issue

High

Background and foreground colors do not have a sufficient contrast ratio.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

Tables and lists

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

Impact

Issue

High

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

sahfos.ac.uk best practices score

83

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

sahfos.ac.uk SEO score

92

Search Engine Optimization Advices

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

Image elements do not have [alt] attributes

Mobile Friendly

Make sure your pages are mobile friendly so users don’t have to pinch or zoom in order to read the content pages. [Learn more](https://developers.google.com/search/mobile-sites/).

Impact

Issue

High

Document uses legible font sizes

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Sahfos.ac.uk can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Sahfos.ac.uk main page’s claimed encoding is utf-8. Use of this encoding format is the best practice as the main page visitors from all over the world won’t have any issues with symbol transcription.

Social Sharing Optimization

sahfos.ac.uk

Open Graph data is detected on the main page of Sahfos. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: