Report Summary

  • 51

    Performance

    Renders faster than
    70% of other websites

  • 88

    Accessibility

    Visual factors better than
    that of 70% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 87

    SEO

    Google-friendlier than
    66% of websites

Page Load Speed

3.3 sec in total

First Response

52 ms

Resources Loaded

2.7 sec

Page Rendered

517 ms

shellfish.org screenshot

About Website

Click here to check amazing Shellfish content. Otherwise, check out these important facts you probably never knew about shellfish.org

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Key Findings

We analyzed Shellfish.org page load time and found that the first response time was 52 ms and then it took 3.2 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

shellfish.org performance score

51

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.8 s

11/100

10%

LCP (Largest Contentful Paint)

Value11.3 s

0/100

25%

SI (Speed Index)

Value6.0 s

46/100

10%

TBT (Total Blocking Time)

Value130 ms

96/100

30%

CLS (Cumulative Layout Shift)

Value0.111

87/100

15%

TTI (Time to Interactive)

Value8.6 s

37/100

10%

Network Requests Diagram

shellfish.org

52 ms

www.shellfish.org

695 ms

css

70 ms

jquery-1.9.0.js

57 ms

jquery-ui-1.8.22.custom.min.js

110 ms

Our browser made a total of 68 requests to load all elements on the main page. We found that 82% of them (56 requests) were addressed to the original Shellfish.org, 7% (5 requests) were made to Shellfish.memberclicks.net and 3% (2 requests) were made to Fonts.gstatic.com. The less responsive or slowest element that took the longest time to load (695 ms) belongs to the original domain Shellfish.org.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.2 MB (36%)

Content Size

3.4 MB

After Optimization

2.2 MB

In fact, the total size of Shellfish.org main page is 3.4 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. 50% of websites need less resources to load. Images take 2.3 MB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 35.0 kB

  • Original 42.6 kB
  • After minification 29.1 kB
  • After compression 7.6 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 13.5 kB, which is 32% 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 35.0 kB or 82% of the original size.

Image Optimization

-14%

Potential reduce by 332.1 kB

  • Original 2.3 MB
  • After minification 2.0 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, Shellfish needs image optimization as it can save up to 332.1 kB or 14% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-80%

Potential reduce by 795.2 kB

  • Original 992.2 kB
  • After minification 674.4 kB
  • After compression 197.0 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 795.2 kB or 80% of the original size.

CSS Optimization

-85%

Potential reduce by 79.0 kB

  • Original 93.4 kB
  • After minification 59.7 kB
  • After compression 14.4 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. Shellfish.org needs all CSS files to be minified and compressed as it can save up to 79.0 kB or 85% of the original size.

Requests Breakdown

Number of requests can be reduced by 37 (58%)

Requests Now

64

After Optimization

27

The browser has sent 64 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Shellfish. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 18 to 1 for JavaScripts and from 21 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

shellfish.org accessibility score

88

Accessibility Issues

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

[id] attributes on active, focusable elements are not unique

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

Links do not have a discernible name

Best Practices

shellfish.org best practices score

75

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

shellfish.org SEO score

87

Search Engine Optimization Advices

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

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    N/A

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Shellfish.org can be misinterpreted by Google and other search engines. Unfortunately we cannot identify language used on the page (probably there is a mix of languages, too little text or something else), while the claimed language is English. Our system also found out that Shellfish.org 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

Open Graph description is not detected on the main page of Shellfish. Lack of Open Graph description can be counter-productive for their social media presence, as such a description allows converting a website homepage (or other pages) into good-looking, rich and well-structured posts, when it is being shared on Facebook and other social media. For example, adding the following code snippet into HTML <head> tag will help to represent this web page correctly in social networks: