Tools & Wizards About Us
code4lib.org screenshot

Report Summary

  • 100

    Performance

    Renders faster than
    97% of other websites

  • 100

    Accessibility

    Visual factors better than
    that of 97% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 99

    SEO

    Google-friendlier than
    93% of websites

code4lib.org

Code4Lib | We are developers and technologists for libraries, museums, and archives who are dedicated to being a diverse and inclusive community, seek...

Page Load Speed

2.2 sec in total

First Response

478 ms

Resources Loaded

1.3 sec

Page Rendered

435 ms

code4lib.org screenshot

About Website

Visit code4lib.org now to see the best up-to-date Code4 Lib content for United States and also check out these interesting facts you probably never knew about code4lib.org

We are developers and technologists for libraries, museums, and archives who are dedicated to being a diverse and inclusive community, seeking to share ideas and build collaboration.

Visit code4lib.org

Key Findings

We analyzed Code4lib.org page load time and found that the first response time was 478 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 35% of websites can load faster.

Performance Metrics

code4lib.org performance score

100

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.2 s

99/100

10%

LCP (Largest Contentful Paint)

Value1.2 s

100/100

25%

SI (Speed Index)

Value1.2 s

100/100

10%

TBT (Total Blocking Time)

Value30 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value1.3 s

100/100

10%

Network Requests Diagram

code4lib.org

478 ms

css_xE-rWrJf-fncB6ztZfd2huxqgxu4WO-qwma6Xer30m4.css

284 ms

css_N-pF2QtsB7TTQ43zLc7omt7WktgMDlCChZmVWDQE654.css

191 ms

css_5xoumAZa9H_g8kzY1UZiwC-UyRGDDs2FyC98GOLhSp8.css

191 ms

css_i_5pknDi1mVeI9qAn5c7JyXRdJV_XA78lzKWIwLhqeU.css

192 ms

Our browser made a total of 10 requests to load all elements on the main page. We found that all of those requests were addressed to Code4lib.org and no external sources were called. The less responsive or slowest element that took the longest time to load (663 ms) belongs to the original domain Code4lib.org.

Page Optimization Overview & Recommendations

Page size can be reduced by 113.0 kB (70%)

Content Size

162.5 kB

After Optimization

49.5 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Code4lib.org main page is 162.5 kB. This result falls within a vast category (top 1 000 000) of heavyweight, probably not optimized, and thus slow loading web pages. Only 5% of websites need less resources to load. Javascripts take 98.4 kB which makes up the majority of the site volume.

HTML Optimization

-74%

Potential reduce by 31.0 kB

  • Original 41.7 kB
  • After minification 41.0 kB
  • After compression 10.7 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 31.0 kB or 74% of the original size.

Image Optimization

-28%

Potential reduce by 2.0 kB

  • Original 7.1 kB
  • After minification 5.1 kB

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. Obviously, Code4 Lib needs image optimization as it can save up to 2.0 kB or 28% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-71%

Potential reduce by 69.5 kB

  • Original 98.4 kB
  • After minification 86.0 kB
  • After compression 28.9 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 69.5 kB or 71% of the original size.

CSS Optimization

-69%

Potential reduce by 10.5 kB

  • Original 15.3 kB
  • After minification 14.9 kB
  • After compression 4.8 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. Code4lib.org needs all CSS files to be minified and compressed as it can save up to 10.5 kB or 69% of the original size.

Requests Breakdown

Number of requests can be reduced by 3 (33%)

Requests Now

9

After Optimization

6

  • Images
  • JavaScript
  • CSS

The browser has sent 9 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Code4 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 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

code4lib.org

code4lib.org

478 ms

css_xE-rWrJf-fncB6ztZfd2huxqgxu4WO-qwma6Xer30m4.css

css_xE-rWrJf-fncB6ztZfd2huxqgxu4WO-qwma6Xer30m4.css

284 ms

css_N-pF2QtsB7TTQ43zLc7omt7WktgMDlCChZmVWDQE654.css

css_N-pF2QtsB7TTQ43zLc7omt7WktgMDlCChZmVWDQE654.css

191 ms

css_5xoumAZa9H_g8kzY1UZiwC-UyRGDDs2FyC98GOLhSp8.css

css_5xoumAZa9H_g8kzY1UZiwC-UyRGDDs2FyC98GOLhSp8.css

191 ms

css_i_5pknDi1mVeI9qAn5c7JyXRdJV_XA78lzKWIwLhqeU.css

css_i_5pknDi1mVeI9qAn5c7JyXRdJV_XA78lzKWIwLhqeU.css

192 ms

js_UWQINlriydSoeSiGQxToOUdv493zEa7dpsXC1OtYlZU.js

js_UWQINlriydSoeSiGQxToOUdv493zEa7dpsXC1OtYlZU.js

663 ms

logo.png

logo.png

191 ms

feed.png

feed.png

194 ms

menu-leaf.png

menu-leaf.png

192 ms

menu-collapsed.png

menu-collapsed.png

193 ms

Accessibility Review

code4lib.org accessibility score

100

Accessibility Issues

Best Practices

code4lib.org best practices score

83

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

SEO Factors

code4lib.org SEO score

99

Search Engine Optimization Advices

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 Code4lib.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 Code4lib.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

code4lib.org

Open Graph data is detected on the main page of PARSED_DOMAIN, but there is no image specified in description. It would be a good idea for the website admin to select a nice image that can properly represent the website in Open Graph data, otherwise the first found image will be taken for this purpose and social media information block will look like this: