Tools & Wizards About Us
sbl.bibliocommons.com screenshot

Report Summary

  • 7

    Performance

    Renders faster than
    22% 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

  • 90

    SEO

    Google-friendlier than
    68% of websites

sbl.bibliocommons.com

Recent Activity | San Bruno Public Library | BiblioCommons

Page Load Speed

4.7 sec in total

First Response

15 ms

Resources Loaded

4.4 sec

Page Rendered

309 ms

sbl.bibliocommons.com screenshot

About Website

Visit sbl.bibliocommons.com now to see the best up-to-date Sbl Biblio Commons content for United States and also check out these interesting facts you probably never knew about sbl.bibliocommons.com

Explore San Bruno Public Library. New titles, recently rated, and recently tagged by the library community.

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Key Findings

We analyzed Sbl.bibliocommons.com page load time and found that the first response time was 15 ms and then it took 4.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.

Performance Metrics

sbl.bibliocommons.com performance score

7

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.0 s

51/100

10%

LCP (Largest Contentful Paint)

Value18.4 s

0/100

25%

SI (Speed Index)

Value12.5 s

3/100

10%

TBT (Total Blocking Time)

Value5,680 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.673

8/100

15%

TTI (Time to Interactive)

Value19.2 s

2/100

10%

Network Requests Diagram

sbl.bibliocommons.com

15 ms

sbl.bibliocommons.com

1451 ms

gtm.js

76 ms

bc_base-7458b34fb4de9be11818e405e123b860.css

38 ms

core-0ebb1c96c1022e0da243d70f0cde2466.css

51 ms

Our browser made a total of 172 requests to load all elements on the main page. We found that 2% of them (4 requests) were addressed to the original Sbl.bibliocommons.com, 66% (114 requests) were made to Contentcafe2.btol.com and 16% (27 requests) were made to Cor-cdn-static.bibliocommons.com. The less responsive or slowest element that took the longest time to load (1.5 sec) belongs to the original domain Sbl.bibliocommons.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 602.1 kB (12%)

Content Size

5.2 MB

After Optimization

4.6 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Sbl.bibliocommons.com main page is 5.2 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. Only a small number of websites need less resources to load. Images take 3.4 MB which makes up the majority of the site volume.

HTML Optimization

-90%

Potential reduce by 408.3 kB

  • Original 454.7 kB
  • After minification 451.3 kB
  • After compression 46.5 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 408.3 kB or 90% of the original size.

Image Optimization

-6%

Potential reduce by 190.2 kB

  • Original 3.4 MB
  • After minification 3.2 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. Sbl Biblio Commons images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 40 B

  • Original 1.3 MB
  • After minification 1.3 MB
  • After compression 1.3 MB

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

-3%

Potential reduce by 3.6 kB

  • Original 113.5 kB
  • After minification 113.5 kB
  • After compression 109.9 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. Sbl.bibliocommons.com has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 28 (19%)

Requests Now

150

After Optimization

122

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 150 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Sbl Biblio Commons. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 13 to 1 for JavaScripts and from 17 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

sbl.bibliocommons.com

sbl.bibliocommons.com

15 ms

sbl.bibliocommons.com

sbl.bibliocommons.com

1451 ms

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76 ms

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38 ms

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51 ms

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49 ms

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67 ms

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70 ms

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68 ms

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44 ms

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222 ms

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49 ms

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71 ms

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72 ms

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82 ms

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113 ms

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68 ms

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66 ms

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Accessibility Review

sbl.bibliocommons.com accessibility score

100

Accessibility Issues

Best Practices

sbl.bibliocommons.com 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

sbl.bibliocommons.com SEO score

90

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

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 Sbl.bibliocommons.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 Sbl.bibliocommons.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

sbl.bibliocommons.com

Open Graph description is not detected on the main page of Sbl Biblio Commons. 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: