Tools & Wizards About Us
greatscience.com screenshot

Report Summary

  • 29

    Performance

    Renders faster than
    49% of other websites

  • 81

    Accessibility

    Visual factors better than
    that of 51% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 84

    SEO

    Google-friendlier than
    52% of websites

greatscience.com

Great Lakes Science Center | A community where all people value science, technology, engineering, and math to inform decision-making and enrich lives.

Page Load Speed

2 sec in total

First Response

33 ms

Resources Loaded

1 sec

Page Rendered

890 ms

greatscience.com screenshot

About Website

Click here to check amazing Great Science content for United States. Otherwise, check out these important facts you probably never knew about greatscience.com

A community where all people value science, technology, engineering, and math to inform decision-making and enrich lives.

Visit greatscience.com

Key Findings

We analyzed Greatscience.com page load time and found that the first response time was 33 ms and then it took 1.9 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 40% of websites can load faster.

Performance Metrics

greatscience.com performance score

29

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.7 s

92/100

10%

LCP (Largest Contentful Paint)

Value38.7 s

0/100

25%

SI (Speed Index)

Value16.0 s

0/100

10%

TBT (Total Blocking Time)

Value1,370 ms

16/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value63.2 s

0/100

10%

Network Requests Diagram

greatscience.com

33 ms

greatscience.com

126 ms

gtm.js

115 ms

js

165 ms

js

443 ms

Our browser made a total of 85 requests to load all elements on the main page. We found that 76% of them (65 requests) were addressed to the original Greatscience.com, 8% (7 requests) were made to Googletagmanager.com and 4% (3 requests) were made to Connect.facebook.net. The less responsive or slowest element that took the longest time to load (616 ms) belongs to the original domain Greatscience.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.5 MB (7%)

Content Size

20.8 MB

After Optimization

19.2 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Greatscience.com main page is 20.8 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. Only a small number of websites need less resources to load. Images take 20.2 MB which makes up the majority of the site volume.

HTML Optimization

-77%

Potential reduce by 96.9 kB

  • Original 126.6 kB
  • After minification 123.2 kB
  • After compression 29.7 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. HTML code on this page is well minified. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 96.9 kB or 77% of the original size.

Image Optimization

-6%

Potential reduce by 1.3 MB

  • Original 20.2 MB
  • After minification 18.9 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. Great Science images are well optimized though.

JavaScript Optimization

-33%

Potential reduce by 151.3 kB

  • Original 453.3 kB
  • After minification 447.2 kB
  • After compression 302.0 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 151.3 kB or 33% of the original size.

CSS Optimization

-23%

Potential reduce by 7.5 kB

  • Original 32.8 kB
  • After minification 32.8 kB
  • After compression 25.2 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. Greatscience.com needs all CSS files to be minified and compressed as it can save up to 7.5 kB or 23% of the original size.

Requests Breakdown

Number of requests can be reduced by 40 (51%)

Requests Now

78

After Optimization

38

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 78 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Great Science. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 20 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

greatscience.com

greatscience.com

33 ms

greatscience.com

greatscience.com

126 ms

gtm.js

gtm.js

115 ms

js

js

165 ms

js

js

443 ms

8f133720-2ab8-013a-bf98-06a60fe5fe77%E2%80%99

8f133720-2ab8-013a-bf98-06a60fe5fe77%E2%80%99

111 ms

fbevents.js

fbevents.js

42 ms

analytics.js

analytics.js

71 ms

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js__AK-CL86gnIqwE9tzw-7GchyFRsasNF--XZ-i8xZPTig__rQaVI3heYo2BXUV133Ia4mgKj3R-xkDs52mhHfLT3rY__VytQggfWHP2HMH9Ak30w5Kqdqi9xNfBj0u7XRGl5OyQ.js

94 ms

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js__pqoYaVR8NVhof-vNXe50j2TKhFv__IihVag_h4G6kus__B4mbn4wICLQjWm1m3-z1kw8F1FtP0cDAHKp00Xy_-88__VytQggfWHP2HMH9Ak30w5Kqdqi9xNfBj0u7XRGl5OyQ.js

94 ms

js__H5AFmq1RrXKsrazzPq_xPQPy4K0wUKqecPjczzRiTgQ__wor4r9P8YTtQ7p6fbywTetZ47Z_orumIfrrhgxrpLus__VytQggfWHP2HMH9Ak30w5Kqdqi9xNfBj0u7XRGl5OyQ.js

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95 ms

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94 ms

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139 ms

embed.js

embed.js

147 ms

mc-validate.js

mc-validate.js

95 ms

all.js

all.js

52 ms

hamburger.png

hamburger.png

139 ms

logo_white.png

logo_white.png

137 ms

icon-search.png

icon-search.png

137 ms

icon-dropdown-carat.png

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138 ms

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138 ms

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350 ms

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143 ms

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476 ms

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membership-banner-img.jpg

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341 ms

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340 ms

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423 ms

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472 ms

Mather_6%2C%206.30.11.JPG

Mather_6%2C%206.30.11.JPG

482 ms

Mather_6%2C%206.30.11.JPG

Mather_6%2C%206.30.11.JPG

471 ms

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476 ms

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Website%20Banner%20%20-%20Volunteer%20%2822%29.png

494 ms

css__IiiUHLC4asGo44oCOYQB_V6wHWkY9SveYuvF-RpHJZE__1NU10gAYPUaieK8p9fz144HgxEc3Gzg6602jn1JaEak__VytQggfWHP2HMH9Ak30w5Kqdqi9xNfBj0u7XRGl5OyQ.css

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489 ms

collect

collect

50 ms

css__-ed-nqdVOjlAF9Fc4fR44sccdfvYGyoQjINExoT1avc__zbwoQtgGsstodL8VnZj-1mAiPti1er8Zsk7sYLRadZg__VytQggfWHP2HMH9Ak30w5Kqdqi9xNfBj0u7XRGl5OyQ.css

css__-ed-nqdVOjlAF9Fc4fR44sccdfvYGyoQjINExoT1avc__zbwoQtgGsstodL8VnZj-1mAiPti1er8Zsk7sYLRadZg__VytQggfWHP2HMH9Ak30w5Kqdqi9xNfBj0u7XRGl5OyQ.css

395 ms

montserrat-bold-webfont.woff

montserrat-bold-webfont.woff

403 ms

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403 ms

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403 ms

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408 ms

js

js

227 ms

events.js

events.js

293 ms

js

js

346 ms

js

js

343 ms

collect

collect

347 ms

js

js

339 ms

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616 ms

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361 ms

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362 ms

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364 ms

menu-leaf.png

menu-leaf.png

365 ms

sponsor-logo.png

sponsor-logo.png

362 ms

all.js

all.js

225 ms

script.js

script.js

558 ms

318 ms

ga-audiences

ga-audiences

338 ms

saq_pxl

saq_pxl

163 ms

css__-ed-nqdVOjlAF9Fc4fR44sccdfvYGyoQjINExoT1avc__zbwoQtgGsstodL8VnZj-1mAiPti1er8Zsk7sYLRadZg__VytQggfWHP2HMH9Ak30w5Kqdqi9xNfBj0u7XRGl5OyQ.css

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30 ms

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51 ms

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46 ms

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45 ms

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74 ms

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28 ms

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css__IiiUHLC4asGo44oCOYQB_V6wHWkY9SveYuvF-RpHJZE__1NU10gAYPUaieK8p9fz144HgxEc3Gzg6602jn1JaEak__VytQggfWHP2HMH9Ak30w5Kqdqi9xNfBj0u7XRGl5OyQ.css

9 ms

Accessibility Review

greatscience.com accessibility score

81

Accessibility Issues

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

[role] values are not valid

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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

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

greatscience.com 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

High

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

SEO Factors

greatscience.com SEO score

84

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

Links do not have descriptive text

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

Links are not crawlable

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

    EN

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Greatscience.com can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it matches the claimed language. Our system also found out that Greatscience.com 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

greatscience.com

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