Report Summary

  • 100

    Performance

    Renders faster than
    97% of other websites

  • 72

    Accessibility

    Visual factors better than
    that of 38% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 62

    SEO

    Google-friendlier than
    22% of websites

w3.pppl.gov

Princeton Plasma Physics Laboratory

Page Load Speed

398 ms in total

First Response

72 ms

Resources Loaded

116 ms

Page Rendered

210 ms

w3.pppl.gov screenshot

About Website

Visit w3.pppl.gov now to see the best up-to-date W 3 Pppl content for United States and also check out these interesting facts you probably never knew about w3.pppl.gov

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Key Findings

We analyzed W3.pppl.gov page load time and found that the first response time was 72 ms and then it took 326 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

w3.pppl.gov performance score

100

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.1 s

99/100

10%

LCP (Largest Contentful Paint)

Value1.2 s

100/100

25%

SI (Speed Index)

Value1.1 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)

Value1.1 s

100/100

10%

Network Requests Diagram

w3.pppl.gov

72 ms

PPPL_logo_175.jpg

23 ms

univ_logo.gif

15 ms

Our browser made a total of 3 requests to load all elements on the main page. We found that all of those requests were addressed to W3.pppl.gov and no external sources were called. The less responsive or slowest element that took the longest time to load (72 ms) belongs to the original domain W3.pppl.gov.

Page Optimization Overview & Recommendations

Page size can be reduced by 23.1 kB (43%)

Content Size

54.3 kB

After Optimization

31.1 kB

In fact, the total size of W3.pppl.gov main page is 54.3 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 50.2 kB which makes up the majority of the site volume.

HTML Optimization

-65%

Potential reduce by 2.6 kB

  • Original 4.1 kB
  • After minification 3.6 kB
  • After compression 1.4 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 2.6 kB or 65% of the original size.

Image Optimization

-41%

Potential reduce by 20.5 kB

  • Original 50.2 kB
  • After minification 29.7 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, W 3 Pppl needs image optimization as it can save up to 20.5 kB or 41% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

Requests Breakdown

We found no issues to fix!

Requests Now

2

After Optimization

2

The browser has sent 2 CSS, Javascripts, AJAX and image requests in order to completely render the main page of W 3 Pppl. According to our analytics all requests are already optimized.

Accessibility Review

w3.pppl.gov accessibility score

72

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

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

Best Practices

w3.pppl.gov 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

General

Impact

Issue

High

Browser errors were logged to the console

SEO Factors

w3.pppl.gov SEO score

62

Search Engine Optimization Advices

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

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise W3.pppl.gov 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 W3.pppl.gov 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

Open Graph description is not detected on the main page of W 3 Pppl. 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: