Tools & Wizards About Us
leopac1.nypl.org screenshot

Report Summary

  • 71

    Performance

    Renders faster than
    82% of other websites

  • 93

    Accessibility

    Visual factors better than
    that of 82% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 62

    SEO

    Google-friendlier than
    22% of websites

leopac1.nypl.org

New York Public Library Catalog

Page Load Speed

700 ms in total

First Response

69 ms

Resources Loaded

536 ms

Page Rendered

95 ms

leopac1.nypl.org screenshot

About Website

Visit leopac1.nypl.org now to see the best up-to-date Leopac 1 Nypl content for United States and also check out these interesting facts you probably never knew about leopac1.nypl.org

Visit leopac1.nypl.org

Key Findings

We analyzed Leopac1.nypl.org page load time and found that the first response time was 69 ms and then it took 631 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

leopac1.nypl.org performance score

71

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.5 s

33/100

10%

LCP (Largest Contentful Paint)

Value4.4 s

38/100

25%

SI (Speed Index)

Value3.8 s

84/100

10%

TBT (Total Blocking Time)

Value120 ms

97/100

30%

CLS (Cumulative Layout Shift)

Value0.002

100/100

15%

TTI (Time to Interactive)

Value6.5 s

59/100

10%

Network Requests Diagram

catalog.nypl.org

69 ms

ProStyles.css

28 ms

styles.css

73 ms

elcontent.js

47 ms

common.js

68 ms

Our browser made a total of 20 requests to load all elements on the main page. We found that 0% of them (0 request) were addressed to the original Leopac1.nypl.org, 10% (2 requests) were made to Header.nypl.org and 5% (1 request) were made to A.optnmnstr.com. The less responsive or slowest element that took the longest time to load (115 ms) relates to the external source Catalog.nypl.org.

Page Optimization Overview & Recommendations

Page size can be reduced by 669.3 kB (75%)

Content Size

886.7 kB

After Optimization

217.4 kB

  • HTML
  • JavaScript
  • CSS

In fact, the total size of Leopac1.nypl.org main page is 886.7 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. 30% of websites need less resources to load. Javascripts take 766.6 kB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 17.1 kB

  • Original 20.9 kB
  • After minification 11.5 kB
  • After compression 3.8 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 9.4 kB, which is 45% 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 17.1 kB or 82% of the original size.

JavaScript Optimization

-74%

Potential reduce by 564.1 kB

  • Original 766.6 kB
  • After minification 766.6 kB
  • After compression 202.5 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 564.1 kB or 74% of the original size.

CSS Optimization

-89%

Potential reduce by 88.1 kB

  • Original 99.2 kB
  • After minification 99.1 kB
  • After compression 11.1 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. Leopac1.nypl.org needs all CSS files to be minified and compressed as it can save up to 88.1 kB or 89% of the original size.

Requests Breakdown

Number of requests can be reduced by 13 (72%)

Requests Now

18

After Optimization

5

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 18 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Leopac 1 Nypl. 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 from 5 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

catalog.nypl.org

catalog.nypl.org

69 ms

ProStyles.css

ProStyles.css

28 ms

styles.css

styles.css

73 ms

elcontent.js

elcontent.js

47 ms

common.js

common.js

68 ms

webbridge.js

webbridge.js

50 ms

features.js

features.js

54 ms

jquery-1.3.2.js

jquery-1.3.2.js

113 ms

nypl_org.js

nypl_org.js

70 ms

dgx-header.min.js

dgx-header.min.js

57 ms

search.css

search.css

27 ms

transparent.gif

transparent.gif

114 ms

submit.gif

submit.gif

115 ms

api.min.js

api.min.js

95 ms

KievitWeb.woff

KievitWeb.woff

28 ms

jquery.min.js

jquery.min.js

9 ms

styles.css

styles.css

15 ms

analytics.js

analytics.js

13 ms

267484

267484

12 ms

css

css

25 ms

Accessibility Review

leopac1.nypl.org accessibility score

93

Accessibility Issues

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

Form elements do not have associated labels

Best Practices

leopac1.nypl.org best practices score

67

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

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

SEO Factors

leopac1.nypl.org SEO score

62

Search Engine Optimization Advices

Crawling and Indexing

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

Impact

Issue

High

robots.txt is not valid

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 Leopac1.nypl.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 Leopac1.nypl.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

leopac1.nypl.org

Open Graph description is not detected on the main page of Leopac 1 Nypl. 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: