Tools & Wizards About Us
library.alibris.com screenshot

Report Summary

  • 63

    Performance

    Renders faster than
    77% of other websites

  • 48

    Accessibility

    Visual factors better than
    that of 20% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 57

    SEO

    Google-friendlier than
    20% of websites

library.alibris.com

Alibris for Libraries: Out-of-Print Books, New & Used Books

Page Load Speed

590 ms in total

First Response

41 ms

Resources Loaded

451 ms

Page Rendered

98 ms

library.alibris.com screenshot

About Website

Visit library.alibris.com now to see the best up-to-date Library Alibris content for United States and also check out these interesting facts you probably never knew about library.alibris.com

Alibris for Libraries is the leading library service for older in-print and out-of-print books, retrospective collecting, and replacement project management

Visit library.alibris.com

Key Findings

We analyzed Library.alibris.com page load time and found that the first response time was 41 ms and then it took 549 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. This domain responded with an error, which can significantly jeopardize Library.alibris.com rating and web reputation

Performance Metrics

library.alibris.com performance score

63

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.8 s

55/100

10%

LCP (Largest Contentful Paint)

Value4.6 s

34/100

25%

SI (Speed Index)

Value2.8 s

95/100

10%

TBT (Total Blocking Time)

Value510 ms

57/100

30%

CLS (Cumulative Layout Shift)

Value0.061

97/100

15%

TTI (Time to Interactive)

Value4.8 s

79/100

10%

Network Requests Diagram

library.alibris.com

41 ms

challenges.css

30 ms

favicon.ico

281 ms

v1

18 ms

transparent.gif

14 ms

Our browser made a total of 7 requests to load all elements on the main page. We found that 86% of them (6 requests) were addressed to the original Library.alibris.com, 14% (1 request) were made to Cloudflare.hcaptcha.com. The less responsive or slowest element that took the longest time to load (281 ms) belongs to the original domain Library.alibris.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 5.1 kB (38%)

Content Size

13.4 kB

After Optimization

8.3 kB

  • HTML
  • CSS

In fact, the total size of Library.alibris.com main page is 13.4 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. 20% of websites need less resources to load. HTML takes 10.8 kB which makes up the majority of the site volume.

HTML Optimization

-47%

Potential reduce by 5.1 kB

  • Original 10.8 kB
  • After minification 10.3 kB
  • After compression 5.7 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. 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 5.1 kB or 47% of the original size.

CSS Optimization

-1%

Potential reduce by 19 B

  • Original 2.6 kB
  • After minification 2.6 kB
  • After compression 2.6 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. Library.alibris.com has all CSS files already compressed.

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 Library Alibris. According to our analytics all requests are already optimized.

Network Requests Diagram

library.alibris.com

library.alibris.com

41 ms

challenges.css

challenges.css

30 ms

favicon.ico

favicon.ico

281 ms

v1

v1

18 ms

transparent.gif

transparent.gif

14 ms

transparent.gif

transparent.gif

27 ms

api.js

api.js

54 ms

Accessibility Review

library.alibris.com accessibility score

48

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.

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

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

Image elements do not have [alt] attributes

High

<input type="image"> elements do not have [alt] text

High

Form elements do not have associated labels

High

Links do not have a discernible name

Best Practices

library.alibris.com best practices score

75

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

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

SEO Factors

library.alibris.com SEO score

57

Search Engine Optimization Advices

Crawling and Indexing

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

Impact

Issue

High

Links are not crawlable

High

Page is blocked from indexing

Content Best Practices

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

Impact

Issue

High

Image elements do not have [alt] attributes

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 Library.alibris.com 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 Library.alibris.com 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

library.alibris.com

Open Graph description is not detected on the main page of Library Alibris. 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: