Report Summary

  • 33

    Performance

    Renders faster than
    53% of other websites

  • 84

    Accessibility

    Visual factors better than
    that of 58% of websites

  • 69

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 76

    SEO

    Google-friendlier than
    35% of websites

naperville-lib.org

Naperville Public Library, IL | Official Website

Page Load Speed

1.8 sec in total

First Response

85 ms

Resources Loaded

1.4 sec

Page Rendered

294 ms

naperville-lib.org screenshot

About Website

Click here to check amazing Naperville Lib content for United States. Otherwise, check out these important facts you probably never knew about naperville-lib.org

Naperville Public Library serves the fourth-largest city in Illinois and a community of nearly 150,000 people at its three locations: Nichols Library, Naper Blvd. Library and 95th Street Library. The ...

Visit naperville-lib.org

Key Findings

We analyzed Naperville-lib.org page load time and found that the first response time was 85 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 30% of websites can load faster.

Performance Metrics

naperville-lib.org performance score

33

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.3 s

18/100

10%

LCP (Largest Contentful Paint)

Value7.1 s

6/100

25%

SI (Speed Index)

Value5.7 s

52/100

10%

TBT (Total Blocking Time)

Value1,240 ms

20/100

30%

CLS (Cumulative Layout Shift)

Value0.076

95/100

15%

TTI (Time to Interactive)

Value7.6 s

47/100

10%

Network Requests Diagram

naperville-lib.org

85 ms

www.naperville-lib.org

176 ms

jquery-1.3.2.js

179 ms

css_365f5162224cf2755156f7613f325233.css

213 ms

js_d5b9ee6de69fccd081a2acf53b5a78be.js

190 ms

Our browser made a total of 74 requests to load all elements on the main page. We found that 84% of them (62 requests) were addressed to the original Naperville-lib.org, 8% (6 requests) were made to Google-analytics.com and 4% (3 requests) were made to Calendar.naperville-lib.org. The less responsive or slowest element that took the longest time to load (680 ms) belongs to the original domain Naperville-lib.org.

Page Optimization Overview & Recommendations

Page size can be reduced by 632.7 kB (23%)

Content Size

2.8 MB

After Optimization

2.1 MB

In fact, the total size of Naperville-lib.org main page is 2.8 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. 40% of websites need less resources to load. Images take 2.1 MB which makes up the majority of the site volume.

HTML Optimization

-79%

Potential reduce by 67.2 kB

  • Original 84.6 kB
  • After minification 74.9 kB
  • After compression 17.4 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 9.7 kB, which is 11% 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 67.2 kB or 79% of the original size.

Image Optimization

-7%

Potential reduce by 147.6 kB

  • Original 2.1 MB
  • After minification 2.0 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. Naperville Lib images are well optimized though.

JavaScript Optimization

-69%

Potential reduce by 218.6 kB

  • Original 317.8 kB
  • After minification 243.0 kB
  • After compression 99.2 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 218.6 kB or 69% of the original size.

CSS Optimization

-85%

Potential reduce by 199.3 kB

  • Original 234.8 kB
  • After minification 217.0 kB
  • After compression 35.6 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. Naperville-lib.org needs all CSS files to be minified and compressed as it can save up to 199.3 kB or 85% of the original size.

Requests Breakdown

Number of requests can be reduced by 20 (29%)

Requests Now

70

After Optimization

50

The browser has sent 70 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Naperville Lib. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 8 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

naperville-lib.org accessibility score

84

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

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

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

naperville-lib.org best practices score

69

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

User Experience

Impact

Issue

High

Displays images with incorrect aspect ratio

General

Impact

Issue

Low

Detected JavaScript libraries

High

Uses deprecated APIs

High

Page has valid source maps

SEO Factors

naperville-lib.org SEO score

76

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

Crawling and Indexing

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

Impact

Issue

High

Links are not crawlable

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 Naperville-lib.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 Naperville-lib.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

Open Graph description is not detected on the main page of Naperville Lib. 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: