Tools & Wizards About Us
api.wdl.org screenshot

Report Summary

  • 18

    Performance

    Renders faster than
    34% of other websites

  • 96

    Accessibility

    Visual factors better than
    that of 89% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 96

    SEO

    Google-friendlier than
    91% of websites

api.wdl.org

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

Page Load Speed

704 ms in total

First Response

149 ms

Resources Loaded

339 ms

Page Rendered

216 ms

api.wdl.org screenshot

About Website

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

Key Findings

We analyzed Api.wdl.org page load time and found that the first response time was 149 ms and then it took 555 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

api.wdl.org performance score

18

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.4 s

6/100

10%

LCP (Largest Contentful Paint)

Value18.2 s

0/100

25%

SI (Speed Index)

Value8.2 s

20/100

10%

TBT (Total Blocking Time)

Value7,550 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.001

100/100

15%

TTI (Time to Interactive)

Value19.3 s

2/100

10%

Network Requests Diagram

api.wdl.org

149 ms

stylesheet.css

39 ms

wdl-gray.4f4f4a504421.svg

189 ms

github-light.css

43 ms

analytics.js

31 ms

Our browser made a total of 7 requests to load all elements on the main page. We found that 57% of them (4 requests) were addressed to the original Api.wdl.org, 29% (2 requests) were made to Google-analytics.com and 14% (1 request) were made to Static.wdl.org. The less responsive or slowest element that took the longest time to load (189 ms) relates to the external source Static.wdl.org.

Page Optimization Overview & Recommendations

Page size can be reduced by 19.6 kB (43%)

Content Size

46.0 kB

After Optimization

26.4 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Api.wdl.org main page is 46.0 kB. This result falls within a vast category (top 1 000 000) of heavyweight, probably not optimized, and thus slow loading web pages. Only 5% of websites need less resources to load. Javascripts take 21.0 kB which makes up the majority of the site volume.

HTML Optimization

-77%

Potential reduce by 11.2 kB

  • Original 14.6 kB
  • After minification 11.0 kB
  • After compression 3.4 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 3.6 kB, which is 24% 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 11.2 kB or 77% of the original size.

Image Optimization

-0%

Potential reduce by 0 B

  • Original 78 B
  • After minification 78 B

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. Api Wdl images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 50 B

  • Original 21.0 kB
  • After minification 21.0 kB
  • After compression 20.9 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

-80%

Potential reduce by 8.3 kB

  • Original 10.3 kB
  • After minification 6.0 kB
  • After compression 2.0 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. Api.wdl.org needs all CSS files to be minified and compressed as it can save up to 8.3 kB or 80% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

6

After Optimization

6

  • Images
  • JavaScript
  • CSS

The browser has sent 6 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Api Wdl. According to our analytics all requests are already optimized.

Network Requests Diagram

api.wdl.org

api.wdl.org

149 ms

stylesheet.css

stylesheet.css

39 ms

wdl-gray.4f4f4a504421.svg

wdl-gray.4f4f4a504421.svg

189 ms

github-light.css

github-light.css

43 ms

analytics.js

analytics.js

31 ms

bg_hr.png

bg_hr.png

15 ms

collect

collect

11 ms

Accessibility Review

api.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

api.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

api.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 Api.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 Api.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

api.wdl.org

Open Graph description is not detected on the main page of Api Wdl. 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: