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dl.wdl.org screenshot

Report Summary

  • 31

    Performance

    Renders faster than
    51% 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

dl.wdl.org

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

Page Load Speed

1.8 sec in total

First Response

88 ms

Resources Loaded

1.2 sec

Page Rendered

478 ms

dl.wdl.org screenshot

About Website

Visit dl.wdl.org now to see the best up-to-date Dl Wdl content for Russia and also check out these interesting facts you probably never knew about dl.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 dl.wdl.org

Key Findings

We analyzed Dl.wdl.org page load time and found that the first response time was 88 ms and then it took 1.7 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 35% of websites can load faster.

Performance Metrics

dl.wdl.org performance score

31

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.6 s

13/100

10%

LCP (Largest Contentful Paint)

Value12.7 s

0/100

25%

SI (Speed Index)

Value6.5 s

39/100

10%

TBT (Total Blocking Time)

Value920 ms

31/100

30%

CLS (Cumulative Layout Shift)

Value0.001

100/100

15%

TTI (Time to Interactive)

Value12.6 s

14/100

10%

Network Requests Diagram

88 ms

base.css

137 ms

satelliteLib-6b47f831c184878d7338d4683ecf773a17973bb9.js

254 ms

jquery-1.8.2.js

251 ms

ReadSpeaker.js

523 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 Dl.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 (629 ms) relates to the external source Loc.gov.

Page Optimization Overview & Recommendations

Page size can be reduced by 693.7 kB (79%)

Content Size

874.4 kB

After Optimization

180.7 kB

  • HTML
  • JavaScript
  • CSS

In fact, the total size of Dl.wdl.org main page is 874.4 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. 55% 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

-68%

Potential reduce by 227.9 kB

  • Original 336.9 kB
  • After minification 214.1 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 227.9 kB or 68% 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. Dl.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 Dl 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

88 ms

base.css

base.css

137 ms

satelliteLib-6b47f831c184878d7338d4683ecf773a17973bb9.js

satelliteLib-6b47f831c184878d7338d4683ecf773a17973bb9.js

254 ms

jquery-1.8.2.js

jquery-1.8.2.js

251 ms

ReadSpeaker.js

ReadSpeaker.js

523 ms

ReadSpeaker.Custom.js

ReadSpeaker.Custom.js

133 ms

base.js

base.js

629 ms

id

id

347 ms

AppMeasurement.min.js

AppMeasurement.min.js

130 ms

AppMeasurement_Module_ActivityMap.min.js

AppMeasurement_Module_ActivityMap.min.js

237 ms

logo-loc-new-branding.svg

logo-loc-new-branding.svg

117 ms

facebook.svg

facebook.svg

122 ms

twitter.svg

twitter.svg

115 ms

link.svg

link.svg

243 ms

email.svg

email.svg

247 ms

youtube.svg

youtube.svg

242 ms

pinterest.svg

pinterest.svg

246 ms

flickr.svg

flickr.svg

240 ms

instagram.svg

instagram.svg

243 ms

itunesU.svg

itunesU.svg

310 ms

OpenSans-Regular.woff

OpenSans-Regular.woff

275 ms

OpenSans-Bold.woff

OpenSans-Bold.woff

236 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

193 ms

RobotoSlab-Bold.woff

RobotoSlab-Bold.woff

119 ms

RobotoSlab-Regular.woff

RobotoSlab-Regular.woff

119 ms

dest5.html

dest5.html

107 ms

id

id

201 ms

congress-gov.svg

congress-gov.svg

103 ms

copyright-gov.svg

copyright-gov.svg

105 ms

ibs:dpid=411&dpuuid=YzVdpwAAAHqNBgNP

ibs:dpid=411&dpuuid=YzVdpwAAAHqNBgNP

95 ms

Accessibility Review

dl.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

dl.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

dl.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 Dl.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 Dl.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

dl.wdl.org

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