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content.wdl.org screenshot

Report Summary

  • 33

    Performance

    Renders faster than
    53% of other websites

  • 96

    Accessibility

    Visual factors better than
    that of 88% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 96

    SEO

    Google-friendlier than
    90% of websites

content.wdl.org

About this Collection  |  World Digital Library  |  Digital Collections  |  Library of Congress

Page Load Speed

2.2 sec in total

First Response

133 ms

Resources Loaded

1.5 sec

Page Rendered

536 ms

content.wdl.org screenshot

About Website

Welcome to content.wdl.org homepage info - get ready to check Content Wdl best content for Russia right away, or after learning these important things about content.wdl.org

This collection contains cultural heritage materials gathered during the World Digital Library (WDL) project, including thousands of items contributed by partner organizations worldwide as well as con...

Visit content.wdl.org

Key Findings

We analyzed Content.wdl.org page load time and found that the first response time was 133 ms and then it took 2 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

content.wdl.org performance score

33

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.3 s

18/100

10%

LCP (Largest Contentful Paint)

Value12.4 s

0/100

25%

SI (Speed Index)

Value5.8 s

50/100

10%

TBT (Total Blocking Time)

Value880 ms

32/100

30%

CLS (Cumulative Layout Shift)

Value0.002

100/100

15%

TTI (Time to Interactive)

Value12.4 s

15/100

10%

Network Requests Diagram

133 ms

base.css

122 ms

satelliteLib-6b47f831c184878d7338d4683ecf773a17973bb9.js

72 ms

jquery-1.8.2.js

453 ms

ReadSpeaker.js

601 ms

Our browser made a total of 30 requests to load all elements on the main page. We found that 0% of them (0 request) were addressed to the original Content.wdl.org, 10% (3 requests) were made to Assets.adobedtm.com and 7% (2 requests) were made to Dpm.demdex.net. The less responsive or slowest element that took the longest time to load (675 ms) relates to the external source Loc.gov.

Page Optimization Overview & Recommendations

Page size can be reduced by 692.0 kB (79%)

Content Size

872.7 kB

After Optimization

180.7 kB

  • HTML
  • JavaScript
  • CSS

In fact, the total size of Content.wdl.org main page is 872.7 kB. 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. CSS take 394.9 kB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 115.4 kB

  • Original 142.5 kB
  • After minification 128.6 kB
  • After compression 27.1 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 115.4 kB or 81% of the original size.

JavaScript Optimization

-67%

Potential reduce by 226.2 kB

  • Original 335.3 kB
  • After minification 212.5 kB
  • After compression 109.1 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 226.2 kB or 67% of the original size.

CSS Optimization

-89%

Potential reduce by 350.4 kB

  • Original 394.9 kB
  • After minification 310.0 kB
  • After compression 44.5 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. Content.wdl.org needs all CSS files to be minified and compressed as it can save up to 350.4 kB or 89% of the original size.

Requests Breakdown

Number of requests can be reduced by 6 (26%)

Requests Now

23

After Optimization

17

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 23 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Content Wdl. 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 as a result speed up the page load time.

Network Requests Diagram

133 ms

base.css

base.css

122 ms

satelliteLib-6b47f831c184878d7338d4683ecf773a17973bb9.js

satelliteLib-6b47f831c184878d7338d4683ecf773a17973bb9.js

72 ms

jquery-1.8.2.js

jquery-1.8.2.js

453 ms

ReadSpeaker.js

ReadSpeaker.js

601 ms

ReadSpeaker.Custom.js

ReadSpeaker.Custom.js

504 ms

base.js

base.js

675 ms

id

id

362 ms

AppMeasurement.min.js

AppMeasurement.min.js

190 ms

AppMeasurement_Module_ActivityMap.min.js

AppMeasurement_Module_ActivityMap.min.js

279 ms

logo-loc-new-branding.svg

logo-loc-new-branding.svg

185 ms

facebook.svg

facebook.svg

187 ms

twitter.svg

twitter.svg

188 ms

link.svg

link.svg

216 ms

email.svg

email.svg

215 ms

youtube.svg

youtube.svg

213 ms

pinterest.svg

pinterest.svg

212 ms

flickr.svg

flickr.svg

207 ms

instagram.svg

instagram.svg

217 ms

itunesU.svg

itunesU.svg

344 ms

OpenSans-Regular.woff

OpenSans-Regular.woff

192 ms

OpenSans-Bold.woff

OpenSans-Bold.woff

208 ms

dest5.html

dest5.html

159 ms

id

id

159 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

139 ms

ibs:dpid=411&dpuuid=YzWebwAAAJeaMANP

ibs:dpid=411&dpuuid=YzWebwAAAJeaMANP

20 ms

RobotoSlab-Bold.woff

RobotoSlab-Bold.woff

41 ms

RobotoSlab-Regular.woff

RobotoSlab-Regular.woff

42 ms

congress-gov.svg

congress-gov.svg

187 ms

copyright-gov.svg

copyright-gov.svg

186 ms

Accessibility Review

content.wdl.org accessibility score

96

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

Heading elements are not in a sequentially-descending order

Best Practices

content.wdl.org best practices score

83

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

Missing source maps for large first-party JavaScript

SEO Factors

content.wdl.org SEO score

96

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 Content.wdl.org 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 Content.wdl.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

content.wdl.org

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