Tools & Wizards About Us
lists.princeton.edu screenshot

Report Summary

  • 100

    Performance

    Renders faster than
    97% of other websites

  • 93

    Accessibility

    Visual factors better than
    that of 82% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 69

    SEO

    Google-friendlier than
    28% of websites

lists.princeton.edu

Welcome to ListServ (Production System)

Page Load Speed

374 ms in total

First Response

78 ms

Resources Loaded

127 ms

Page Rendered

169 ms

lists.princeton.edu screenshot

About Website

Click here to check amazing List S Princeton content for United States. Otherwise, check out these important facts you probably never knew about lists.princeton.edu

Visit lists.princeton.edu

Key Findings

We analyzed Lists.princeton.edu page load time and found that the first response time was 78 ms and then it took 296 ms to load all DOM resources and completely render a web page. This is an excellent result, as only a small number of websites can load faster.

Performance Metrics

lists.princeton.edu performance score

100

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value0.8 s

100/100

10%

LCP (Largest Contentful Paint)

Value1.0 s

100/100

25%

SI (Speed Index)

Value0.8 s

100/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value0.8 s

100/100

10%

Network Requests Diagram

lists.princeton.edu

78 ms

css.css

14 ms

ListServ.png

22 ms

Princeton%20logo.png

24 ms

header-bg2.gif

21 ms

Our browser made a total of 5 requests to load all elements on the main page. We found that all of those requests were addressed to Lists.princeton.edu and no external sources were called. The less responsive or slowest element that took the longest time to load (78 ms) belongs to the original domain Lists.princeton.edu.

Page Optimization Overview & Recommendations

Page size can be reduced by 6.1 kB (40%)

Content Size

15.3 kB

After Optimization

9.2 kB

  • HTML
  • Images
  • CSS

In fact, the total size of Lists.princeton.edu main page is 15.3 kB. This result falls within a vast category (top 1 000 000) of heavyweight, probably not optimized, and thus slow loading web pages. Only a small number of websites need less resources to load. Images take 7.0 kB which makes up the majority of the site volume.

HTML Optimization

-62%

Potential reduce by 3.9 kB

  • Original 6.3 kB
  • After minification 5.6 kB
  • After compression 2.3 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 659 B, 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 3.9 kB or 62% of the original size.

Image Optimization

-11%

Potential reduce by 761 B

  • Original 7.0 kB
  • After minification 6.2 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, List S Princeton needs image optimization as it can save up to 761 B or 11% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

CSS Optimization

-70%

Potential reduce by 1.4 kB

  • Original 2.0 kB
  • After minification 1.6 kB
  • After compression 616 B

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. Lists.princeton.edu needs all CSS files to be minified and compressed as it can save up to 1.4 kB or 70% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

4

After Optimization

4

  • Images
  • CSS

The browser has sent 4 CSS, Javascripts, AJAX and image requests in order to completely render the main page of List S Princeton. According to our analytics all requests are already optimized.

Network Requests Diagram

lists.princeton.edu

lists.princeton.edu

78 ms

css.css

css.css

14 ms

ListServ.png

ListServ.png

22 ms

Princeton%20logo.png

Princeton%20logo.png

24 ms

header-bg2.gif

header-bg2.gif

21 ms

Accessibility Review

lists.princeton.edu accessibility score

93

Accessibility Issues

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

Best Practices

lists.princeton.edu 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

SEO Factors

lists.princeton.edu SEO score

69

Search Engine Optimization Advices

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Lists.princeton.edu can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Lists.princeton.edu 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

lists.princeton.edu

Open Graph description is not detected on the main page of List S Princeton. 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: