Tools & Wizards About Us
drillster.com screenshot

Report Summary

  • 29

    Performance

    Renders faster than
    49% of other websites

  • 86

    Accessibility

    Visual factors better than
    that of 61% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 83

    SEO

    Google-friendlier than
    46% of websites

drillster.com

Drillster: the adaptive learning solution for knowledge retention.

Page Load Speed

5.9 sec in total

First Response

1.5 sec

Resources Loaded

3.4 sec

Page Rendered

924 ms

drillster.com screenshot

About Website

Visit drillster.com now to see the best up-to-date Drillster content for Netherlands and also check out these interesting facts you probably never knew about drillster.com

The adaptive learning solution for developing, maintaining, and anchoring knowledge. Be proficient and knowledgeable year-round.

Visit drillster.com

Key Findings

We analyzed Drillster.com page load time and found that the first response time was 1.5 sec and then it took 4.4 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.

Performance Metrics

drillster.com performance score

29

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.3 s

39/100

10%

LCP (Largest Contentful Paint)

Value6.6 s

8/100

25%

SI (Speed Index)

Value6.2 s

43/100

10%

TBT (Total Blocking Time)

Value1,770 ms

10/100

30%

CLS (Cumulative Layout Shift)

Value0.01

100/100

15%

TTI (Time to Interactive)

Value16.6 s

5/100

10%

Network Requests Diagram

drillster.com

1536 ms

gtm.js

80 ms

style.min.css

110 ms

style-index.css

116 ms

dashicons.min.css

172 ms

Our browser made a total of 129 requests to load all elements on the main page. We found that 68% of them (88 requests) were addressed to the original Drillster.com, 19% (25 requests) were made to Fonts.gstatic.com and 2% (3 requests) were made to Fonts.googleapis.com. The less responsive or slowest element that took the longest time to load (1.5 sec) belongs to the original domain Drillster.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 566.0 kB (24%)

Content Size

2.4 MB

After Optimization

1.8 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Drillster.com main page is 2.4 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. 70% of websites need less resources to load. Images take 2.0 MB which makes up the majority of the site volume.

HTML Optimization

-88%

Potential reduce by 108.7 kB

  • Original 124.1 kB
  • After minification 108.5 kB
  • After compression 15.4 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 15.6 kB, which is 13% 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 108.7 kB or 88% of the original size.

Image Optimization

-21%

Potential reduce by 437.7 kB

  • Original 2.0 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, Drillster needs image optimization as it can save up to 437.7 kB or 21% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-4%

Potential reduce by 2.5 kB

  • Original 65.1 kB
  • After minification 65.1 kB
  • After compression 62.6 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. This website has mostly compressed JavaScripts.

CSS Optimization

-13%

Potential reduce by 17.1 kB

  • Original 130.2 kB
  • After minification 129.6 kB
  • After compression 113.1 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. Drillster.com needs all CSS files to be minified and compressed as it can save up to 17.1 kB or 13% of the original size.

Requests Breakdown

Number of requests can be reduced by 50 (50%)

Requests Now

101

After Optimization

51

  • Images
  • JavaScript
  • CSS

The browser has sent 101 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Drillster. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 23 to 1 for JavaScripts and from 20 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

drillster.com

drillster.com

1536 ms

gtm.js

gtm.js

80 ms

style.min.css

style.min.css

110 ms

style-index.css

style-index.css

116 ms

dashicons.min.css

dashicons.min.css

172 ms

wpmm.css

wpmm.css

131 ms

wp-megamenu.css

wp-megamenu.css

121 ms

wpmm-featuresbox.css

wpmm-featuresbox.css

123 ms

wpmm-gridpost.css

wpmm-gridpost.css

199 ms

style.min.css

style.min.css

204 ms

style.css

style.css

222 ms

style.css

style.css

217 ms

main.css

main.css

399 ms

responsive.css

responsive.css

265 ms

style.css

style.css

294 ms

font-awesome.min.css

font-awesome.min.css

53 ms

slick.css

slick.css

55 ms

responsive-menu.css

responsive-menu.css

371 ms

default.css

default.css

310 ms

css

css

51 ms

css

css

68 ms

language-cookie.js

language-cookie.js

313 ms

jquery.min.js

jquery.min.js

391 ms

jquery-migrate.min.js

jquery-migrate.min.js

386 ms

wpmm-featuresbox.js

wpmm-featuresbox.js

467 ms

wpmm-gridpost.js

wpmm-gridpost.js

468 ms

script.min.js

script.min.js

469 ms

jquery.matchHeight.js

jquery.matchHeight.js

479 ms

objectfit.js

objectfit.js

487 ms

scripts.js

scripts.js

501 ms

skrollr.min.js

skrollr.min.js

508 ms

search-in-menu.js

search-in-menu.js

502 ms

sticky-menu.js

sticky-menu.js

561 ms

slick.min.js

slick.min.js

65 ms

skrollr.min.js

skrollr.min.js

47 ms

tilt.jquery.js

tilt.jquery.js

52 ms

site_tracking.js

site_tracking.js

687 ms

wpmm.js

wpmm.js

688 ms

responsive-menu.js

responsive-menu.js

688 ms

css2

css2

26 ms

brand-logo.png

brand-logo.png

165 ms

Logo.png

Logo.png

119 ms

icon_drillster_256x256-1-e1672741073866.png

icon_drillster_256x256-1-e1672741073866.png

119 ms

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116 ms

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117 ms

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116 ms

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116 ms

france.png

france.png

222 ms

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222 ms

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254 ms

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221 ms

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253 ms

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252 ms

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315 ms

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315 ms

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314 ms

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Phone-bg-1-e1672387909788.png

320 ms

512x512bb.jpeg

512x512bb.jpeg

331 ms

flashlight-svgrepo-com1.png

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319 ms

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519 ms

charger-long.png

charger-long.png

385 ms

driehoek-donker-oranje.png

driehoek-donker-oranje.png

383 ms

image-1.png

image-1.png

437 ms

image-7.png

image-7.png

414 ms

image-8.png

image-8.png

455 ms

image-2.png

image-2.png

477 ms

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image-5.png

491 ms

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business-management-presentation-svgrepo-com-1-1.png

508 ms

image-6-e1660565046997.png

image-6-e1660565046997.png

538 ms

business-growth-management-svgrepo-com1.png

business-growth-management-svgrepo-com1.png

546 ms

logo_worldbook.png

logo_worldbook.png

572 ms

logo_elsevier.png

logo_elsevier.png

586 ms

logo-fundacion-bbva-microfinanzas.png

logo-fundacion-bbva-microfinanzas.png

603 ms

logo_klm.png

logo_klm.png

518 ms

logo_shell.png

logo_shell.png

549 ms

logo_wgu.png

logo_wgu.png

546 ms

diffuser.js

diffuser.js

60 ms

insight.min.js

insight.min.js

44 ms

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28 ms

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62 ms

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63 ms

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73 ms

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72 ms

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143 ms

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148 ms

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71 ms

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72 ms

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109 ms

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143 ms

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142 ms

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72 ms

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109 ms

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142 ms

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112 ms

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141 ms

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146 ms

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160 ms

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145 ms

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145 ms

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147 ms

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148 ms

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146 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

35 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

708 ms

logo_vodafone.png

logo_vodafone.png

573 ms

logo_zilverenkruis.png

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587 ms

logo_achmea.png

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598 ms

logo_rai.png

logo_rai.png

630 ms

logo_credit-agricole.png

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631 ms

logo_axalta.png

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667 ms

insight.beta.min.js

insight.beta.min.js

24 ms

prism.app-us1.com

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141 ms

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133 ms

rabobank-logop.png

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581 ms

logo_the-hartford.png

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605 ms

logo_transavia.png

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622 ms

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590 ms

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631 ms

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639 ms

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600 ms

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602 ms

Cybersecurity-handout_featured-image.jpg

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710 ms

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vs.jpg

668 ms

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658 ms

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659 ms

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632 ms

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808 ms

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659 ms

Accessibility Review

drillster.com accessibility score

86

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.

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

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

drillster.com 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

High

Page has valid source maps

SEO Factors

drillster.com SEO score

83

Search Engine Optimization Advices

Crawling and Indexing

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

Impact

Issue

High

Links are not crawlable

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

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 Drillster.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 Drillster.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

drillster.com

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