Tools & Wizards About Us
stoneageinstitute.org screenshot

Report Summary

  • 74

    Performance

    Renders faster than
    83% of other websites

  • 63

    Accessibility

    Visual factors better than
    that of 28% of websites

  • 50

    Best Practices

    More advanced features
    available than in
    19% of websites

  • 67

    SEO

    Google-friendlier than
    26% of websites

stoneageinstitute.org

Stone Age Institute: Home

Page Load Speed

631 ms in total

First Response

43 ms

Resources Loaded

239 ms

Page Rendered

349 ms

stoneageinstitute.org screenshot

About Website

Click here to check amazing Stone Age Institute content for Ethiopia. Otherwise, check out these important facts you probably never knew about stoneageinstitute.org

The Stone Age Institute is a non-profit organization devoted to the study of technology, adaptation, and evolution in human prehistory.

Visit stoneageinstitute.org

Key Findings

We analyzed Stoneageinstitute.org page load time and found that the first response time was 43 ms and then it took 588 ms to load all DOM resources and completely render a web page. This is quite a good result, as only 10% of websites can load faster.

Performance Metrics

stoneageinstitute.org performance score

74

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.7 s

91/100

10%

LCP (Largest Contentful Paint)

Value22.3 s

0/100

25%

SI (Speed Index)

Value1.7 s

100/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value1.7 s

100/100

10%

Network Requests Diagram

stoneageinstitute.org

43 ms

stoneageinstitute.org

27 ms

style.css

5 ms

addthis_widget.js

130 ms

clear.gif

12 ms

Our browser made a total of 47 requests to load all elements on the main page. We found that 96% of them (45 requests) were addressed to the original Stoneageinstitute.org, 2% (1 request) were made to S7.addthis.com and 2% (1 request) were made to Statcounter.com. The less responsive or slowest element that took the longest time to load (130 ms) relates to the external source S7.addthis.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 141.2 kB (3%)

Content Size

4.2 MB

After Optimization

4.0 MB

  • HTML
  • Images
  • CSS

In fact, the total size of Stoneageinstitute.org main page is 4.2 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. 45% of websites need less resources to load. Images take 4.2 MB which makes up the majority of the site volume.

HTML Optimization

-74%

Potential reduce by 11.8 kB

  • Original 15.9 kB
  • After minification 14.7 kB
  • After compression 4.1 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 11.8 kB or 74% of the original size.

Image Optimization

-3%

Potential reduce by 128.8 kB

  • Original 4.2 MB
  • After minification 4.0 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. Stone Age Institute images are well optimized though.

CSS Optimization

-25%

Potential reduce by 572 B

  • Original 2.3 kB
  • After minification 2.3 kB
  • After compression 1.7 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. Stoneageinstitute.org needs all CSS files to be minified and compressed as it can save up to 572 B or 25% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

44

After Optimization

44

  • Images
  • JavaScript
  • CSS

The browser has sent 44 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Stone Age Institute. According to our analytics all requests are already optimized.

Network Requests Diagram

stoneageinstitute.org

stoneageinstitute.org

43 ms

stoneageinstitute.org

stoneageinstitute.org

27 ms

style.css

style.css

5 ms

addthis_widget.js

addthis_widget.js

130 ms

clear.gif

clear.gif

12 ms

aerialsai.jpg

aerialsai.jpg

17 ms

sailogoformenu.jpg

sailogoformenu.jpg

13 ms

saifront2icon.jpg

saifront2icon.jpg

18 ms

standagainstracism.jpg

standagainstracism.jpg

15 ms

sailibrary.jpg

sailibrary.jpg

14 ms

counter.js

counter.js

21 ms

body-bg.png

body-bg.png

12 ms

header-bg.jpg

header-bg.jpg

16 ms

cutmark-bg.jpg

cutmark-bg.jpg

13 ms

Emily_Dickinson_daguerreotype_cropped.jpg

Emily_Dickinson_daguerreotype_cropped.jpg

16 ms

lisaloebthumb.jpg

lisaloebthumb.jpg

21 ms

larkinpoethumb.jpg

larkinpoethumb.jpg

19 ms

kennyaronoffstickscrop.jpg

kennyaronoffstickscrop.jpg

17 ms

carrieevent2020crop.jpg

carrieevent2020crop.jpg

18 ms

kamanlabcomplete.jpg

kamanlabcomplete.jpg

21 ms

researchawardicon.jpg

researchawardicon.jpg

20 ms

craftsmanawardicon.jpg

craftsmanawardicon.jpg

21 ms

hebexcavationpano400.jpg

hebexcavationpano400.jpg

23 ms

elephantbutchery125.jpg

elephantbutchery125.jpg

23 ms

KZ&ChausikuGroom.jpg

KZ&ChausikuGroom.jpg

29 ms

NihewanDGTexcavation125.jpg

NihewanDGTexcavation125.jpg

25 ms

gonaexcavation125.jpg

gonaexcavation125.jpg

26 ms

ainhanech125.jpg

ainhanech125.jpg

26 ms

adzemakers125.jpg

adzemakers125.jpg

29 ms

bb2wwwpainting400wcrop.jpg

bb2wwwpainting400wcrop.jpg

28 ms

sai-band-core.jpg

sai-band-core.jpg

31 ms

olduvaisculpturegroup.jpg

olduvaisculpturegroup.jpg

31 ms

nickbighistorytools.jpg

nickbighistorytools.jpg

30 ms

origins-symposium.jpg

origins-symposium.jpg

32 ms

teacherworkshoparusha2.jpg

teacherworkshoparusha2.jpg

33 ms

saiolduvaidoc400.jpg

saiolduvaidoc400.jpg

35 ms

four-pubs.jpg

four-pubs.jpg

45 ms

humanbraincovericon.jpg

humanbraincovericon.jpg

35 ms

thecuttingedgecovericon.jpg

thecuttingedgecovericon.jpg

37 ms

breathinglifecovericon.jpg

breathinglifecovericon.jpg

37 ms

theoldowancovericon.jpg

theoldowancovericon.jpg

39 ms

silentstonescovericon.jpg

silentstonescovericon.jpg

35 ms

saibookshelficon.jpg

saibookshelficon.jpg

36 ms

Facebook.svg

Facebook.svg

36 ms

Twitter.svg

Twitter.svg

35 ms

Email.svg

Email.svg

35 ms

sai-logo.gif

sai-logo.gif

36 ms

Accessibility Review

stoneageinstitute.org accessibility score

63

Accessibility Issues

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

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

Image elements do not have [alt] attributes

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

stoneageinstitute.org best practices score

50

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Displays images with incorrect aspect ratio

High

Serves images with low resolution

General

Impact

Issue

High

Browser errors were logged to the console

High

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

stoneageinstitute.org SEO score

67

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

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 Stoneageinstitute.org 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 Stoneageinstitute.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

stoneageinstitute.org

Open Graph description is not detected on the main page of Stone Age Institute. 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: