Tools & Wizards About Us
news-navigator.labs.loc.gov screenshot

Report Summary

  • 14

    Performance

    Renders faster than
    26% of other websites

  • 100

    Accessibility

    Visual factors better than
    that of 97% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 86

    SEO

    Google-friendlier than
    60% of websites

news-navigator.labs.loc.gov

Newspaper Navigator  |  Experiments  |  Work  |  Library of Congress

Page Load Speed

5.4 sec in total

First Response

199 ms

Resources Loaded

3.8 sec

Page Rendered

1.4 sec

news-navigator.labs.loc.gov screenshot

About Website

Welcome to news-navigator.labs.loc.gov homepage info - get ready to check News Navigator Labs Loc best content for United States right away, or after learning these important things about news-navigator.labs.loc.gov

Explore the visual and textual content within the Chronicling America digitized newspaper collection in new ways using machine learning!

Visit news-navigator.labs.loc.gov

Key Findings

We analyzed News-navigator.labs.loc.gov page load time and found that the first response time was 199 ms and then it took 5.2 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

news-navigator.labs.loc.gov performance score

14

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.8 s

5/100

10%

LCP (Largest Contentful Paint)

Value13.6 s

0/100

25%

SI (Speed Index)

Value7.7 s

24/100

10%

TBT (Total Blocking Time)

Value7,090 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.164

72/100

15%

TTI (Time to Interactive)

Value16.7 s

5/100

10%

Network Requests Diagram

news-navigator.labs.loc.gov

199 ms

news-navigator.labs.loc.gov

342 ms

base.css

258 ms

satelliteLib-6b47f831c184878d7338d4683ecf773a17973bb9.js

409 ms

jquery-1.8.2.js

193 ms

Our browser made a total of 29 requests to load all elements on the main page. We found that 62% of them (18 requests) were addressed to the original News-navigator.labs.loc.gov, 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 (1.8 sec) belongs to the original domain News-navigator.labs.loc.gov.

Page Optimization Overview & Recommendations

Page size can be reduced by 385.4 kB (33%)

Content Size

1.2 MB

After Optimization

777.5 kB

  • HTML
  • JavaScript
  • CSS

In fact, the total size of News-navigator.labs.loc.gov main page is 1.2 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. 75% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Javascripts take 943.2 kB which makes up the majority of the site volume.

HTML Optimization

-86%

Potential reduce by 134.2 kB

  • Original 156.9 kB
  • After minification 134.0 kB
  • After compression 22.7 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 22.9 kB, which is 15% 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 134.2 kB or 86% of the original size.

JavaScript Optimization

-25%

Potential reduce by 239.5 kB

  • Original 943.2 kB
  • After minification 943.1 kB
  • After compression 703.7 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 239.5 kB or 25% of the original size.

CSS Optimization

-19%

Potential reduce by 11.7 kB

  • Original 62.8 kB
  • After minification 62.8 kB
  • After compression 51.1 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. News-navigator.labs.loc.gov needs all CSS files to be minified and compressed as it can save up to 11.7 kB or 19% of the original size.

Requests Breakdown

Number of requests can be reduced by 9 (47%)

Requests Now

19

After Optimization

10

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 19 CSS, Javascripts, AJAX and image requests in order to completely render the main page of News Navigator Labs Loc. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 10 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

news-navigator.labs.loc.gov

news-navigator.labs.loc.gov

199 ms

news-navigator.labs.loc.gov

news-navigator.labs.loc.gov

342 ms

base.css

base.css

258 ms

satelliteLib-6b47f831c184878d7338d4683ecf773a17973bb9.js

satelliteLib-6b47f831c184878d7338d4683ecf773a17973bb9.js

409 ms

jquery-1.8.2.js

jquery-1.8.2.js

193 ms

email-decode.min.js

email-decode.min.js

187 ms

base.js

base.js

740 ms

share.js

share.js

392 ms

vcd15cbe7772f49c399c6a5babf22c1241717689176015

vcd15cbe7772f49c399c6a5babf22c1241717689176015

398 ms

id

id

543 ms

AppMeasurement.min.js

AppMeasurement.min.js

524 ms

AppMeasurement_Module_ActivityMap.min.js

AppMeasurement_Module_ActivityMap.min.js

619 ms

logo-loc-alt.svg

logo-loc-alt.svg

558 ms

logo-labs.svg

logo-labs.svg

540 ms

nnavigator-logo-cropped.jpg

nnavigator-logo-cropped.jpg

568 ms

twitter.svg

twitter.svg

553 ms

OpenSans-Regular.woff

OpenSans-Regular.woff

349 ms

OpenSans-Bold.woff

OpenSans-Bold.woff

1800 ms

dest5.html

dest5.html

1531 ms

id

id

1587 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

1548 ms

RobotoSlab-Bold.woff

RobotoSlab-Bold.woff

1546 ms

RobotoSlab-Regular.woff

RobotoSlab-Regular.woff

1543 ms

OpenSans-Italic.woff

OpenSans-Italic.woff

1501 ms

OpenSans-BoldItalic.woff

OpenSans-BoldItalic.woff

1500 ms

style.css

style.css

329 ms

jwplayer.js

jwplayer.js

448 ms

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22 ms

ibs:dpid=411&dpuuid=Z0VYIAAAAIiimgNP

ibs:dpid=411&dpuuid=Z0VYIAAAAIiimgNP

12 ms

Accessibility Review

news-navigator.labs.loc.gov accessibility score

100

Accessibility Issues

Best Practices

news-navigator.labs.loc.gov 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

news-navigator.labs.loc.gov SEO score

86

Search Engine Optimization Advices

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

Links do not have descriptive text

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 News-navigator.labs.loc.gov 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 News-navigator.labs.loc.gov 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

news-navigator.labs.loc.gov

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