Tools & Wizards About Us
oliverlabs.net screenshot

Report Summary

  • 69

    Performance

    Renders faster than
    80% of other websites

  • 96

    Accessibility

    Visual factors better than
    that of 88% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 99

    SEO

    Google-friendlier than
    93% of websites

oliverlabs.net

Home - Dr. Oliver Labs: mathematics, math art, math design

Page Load Speed

5.8 sec in total

First Response

260 ms

Resources Loaded

4.6 sec

Page Rendered

919 ms

oliverlabs.net screenshot

About Website

Visit oliverlabs.net now to see the best up-to-date Oliver Labs content and also check out these interesting facts you probably never knew about oliverlabs.net

Home - Dr. Oliver Labs: mathematics, math art, math design. Math sculptures and math art, math teaching, math talks, math research, math exhibitions.

Visit oliverlabs.net

Key Findings

We analyzed Oliverlabs.net page load time and found that the first response time was 260 ms and then it took 5.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 75% of websites can load faster.

Performance Metrics

oliverlabs.net performance score

69

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.7 s

29/100

10%

LCP (Largest Contentful Paint)

Value4.2 s

45/100

25%

SI (Speed Index)

Value9.6 s

11/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value3.8 s

89/100

10%

Network Requests Diagram

oliverlabs.net

260 ms

oliverlabs.net

3187 ms

style.min.css

644 ms

style.css

322 ms

font-libre-franklin.css

332 ms

Our browser made a total of 30 requests to load all elements on the main page. We found that 97% of them (29 requests) were addressed to the original Oliverlabs.net, 3% (1 request) were made to Ol.mo-labs.com. The less responsive or slowest element that took the longest time to load (3.2 sec) belongs to the original domain Oliverlabs.net.

Page Optimization Overview & Recommendations

Page size can be reduced by 447.5 kB (31%)

Content Size

1.5 MB

After Optimization

1.0 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Oliverlabs.net main page is 1.5 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. 35% of websites need less resources to load. Images take 1.0 MB which makes up the majority of the site volume.

HTML Optimization

-75%

Potential reduce by 83.6 kB

  • Original 112.1 kB
  • After minification 110.6 kB
  • After compression 28.6 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. 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 83.6 kB or 75% of the original size.

Image Optimization

-9%

Potential reduce by 88.2 kB

  • Original 1.0 MB
  • After minification 918.5 kB

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. Oliver Labs images are well optimized though.

JavaScript Optimization

-67%

Potential reduce by 86.9 kB

  • Original 129.4 kB
  • After minification 123.2 kB
  • After compression 42.5 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 86.9 kB or 67% of the original size.

CSS Optimization

-87%

Potential reduce by 188.8 kB

  • Original 217.2 kB
  • After minification 191.3 kB
  • After compression 28.4 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. Oliverlabs.net needs all CSS files to be minified and compressed as it can save up to 188.8 kB or 87% of the original size.

Requests Breakdown

Number of requests can be reduced by 10 (56%)

Requests Now

18

After Optimization

8

  • Images
  • JavaScript
  • CSS

The browser has sent 18 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Oliver Labs. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 7 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

oliverlabs.net

oliverlabs.net

260 ms

oliverlabs.net

oliverlabs.net

3187 ms

style.min.css

style.min.css

644 ms

style.css

style.css

322 ms

font-libre-franklin.css

font-libre-franklin.css

332 ms

style.css

style.css

548 ms

blocks.css

blocks.css

336 ms

jquery.min.js

jquery.min.js

557 ms

jquery-migrate.min.js

jquery-migrate.min.js

437 ms

global.js

global.js

441 ms

navigation.js

navigation.js

448 ms

script.min.js

script.min.js

442 ms

dlm-xhr.min.js

dlm-xhr.min.js

451 ms

jquery.scrollTo.js

jquery.scrollTo.js

555 ms

lig_BarthSextic_2000x1200_dark_blue.jpg

lig_BarthSextic_2000x1200_dark_blue.jpg

82 ms

ClebschDiag_Klein4_withChairs_etc_EOW_3377_rat1950_750.jpg

ClebschDiag_Klein4_withChairs_etc_EOW_3377_rat1950_750.jpg

220 ms

FF_HistoricalModelsRuled_2000x1200-2000x1199.jpg

FF_HistoricalModelsRuled_2000x1200-2000x1199.jpg

330 ms

Scheune_Talk_Modelle_20170816_194434_detail_2000x1200-2000x1200.jpg

Scheune_Talk_Modelle_20170816_194434_detail_2000x1200-2000x1200.jpg

329 ms

D6singularity_meshlab_screenshot_overview_2000x1200-2000x1199.jpg

D6singularity_meshlab_screenshot_overview_2000x1200-2000x1199.jpg

556 ms

Scheune_Talk_Fernseher_20170816_194030_detail_2000x1200.jpg

Scheune_Talk_Fernseher_20170816_194030_detail_2000x1200.jpg

331 ms

arrow.png

arrow.png

150 ms

libre-franklin-all-400-normal.woff

libre-franklin-all-400-normal.woff

119 ms

libre-franklin-all-300-normal.woff

libre-franklin-all-300-normal.woff

204 ms

libre-franklin-all-600-normal.woff

libre-franklin-all-600-normal.woff

245 ms

libre-franklin-all-800-normal.woff

libre-franklin-all-800-normal.woff

333 ms

libre-franklin-all-400-italic.woff

libre-franklin-all-400-italic.woff

365 ms

libre-franklin-all-300-italic.woff

libre-franklin-all-300-italic.woff

386 ms

libre-franklin-all-600-italic.woff

libre-franklin-all-600-italic.woff

387 ms

libre-franklin-all-800-italic.woff

libre-franklin-all-800-italic.woff

387 ms

ClebschDiag_Klein4_withChairs_etc_EOW_3377_rat1950_750.jpg

ClebschDiag_Klein4_withChairs_etc_EOW_3377_rat1950_750.jpg

520 ms

Accessibility Review

oliverlabs.net accessibility score

96

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

Links do not have a discernible name

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

oliverlabs.net best practices score

92

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

oliverlabs.net SEO score

99

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

    EN

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Oliverlabs.net 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 Oliverlabs.net 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

oliverlabs.net

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