Tools & Wizards About Us

Report Summary

  • 11

    Performance

    Renders faster than
    24% of other websites

  • 99

    Accessibility

    Visual factors better than
    that of 96% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 85

    SEO

    Google-friendlier than
    55% of websites

jhuapl.edu

Johns Hopkins University Applied Physics Laboratory

Page Load Speed

4.3 sec in total

First Response

347 ms

Resources Loaded

3.3 sec

Page Rendered

667 ms

About Website

Visit jhuapl.edu now to see the best up-to-date Jhuapl content for United States and also check out these interesting facts you probably never knew about jhuapl.edu

Johns Hopkins APL, the nation’s largest university affiliated research center, delivers critical contributions to address critical challenges to our nation.

Visit jhuapl.edu

Key Findings

We analyzed Jhuapl.edu page load time and found that the first response time was 347 ms and then it took 3.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 65% of websites can load faster.

Performance Metrics

jhuapl.edu performance score

11

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.8 s

56/100

10%

LCP (Largest Contentful Paint)

Value13.9 s

0/100

25%

SI (Speed Index)

Value8.5 s

18/100

10%

TBT (Total Blocking Time)

Value2,790 ms

3/100

30%

CLS (Cumulative Layout Shift)

Value0.444

21/100

15%

TTI (Time to Interactive)

Value25.0 s

0/100

10%

Network Requests Diagram

www.jhuapl.edu

347 ms

google_tag.script.js

207 ms

ajax-progress.module.css

175 ms

align.module.css

130 ms

autocomplete-loading.module.css

166 ms

Our browser made a total of 76 requests to load all elements on the main page. We found that 70% of them (53 requests) were addressed to the original Jhuapl.edu, 9% (7 requests) were made to Youtube.com and 9% (7 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (1 sec) relates to the external source Googletagmanager.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 201.4 kB (6%)

Content Size

3.5 MB

After Optimization

3.3 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Jhuapl.edu main page is 3.5 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. 80% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Images take 2.2 MB which makes up the majority of the site volume.

HTML Optimization

-85%

Potential reduce by 155.1 kB

  • Original 182.5 kB
  • After minification 148.4 kB
  • After compression 27.4 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. This page needs HTML code to be minified as it can gain 34.1 kB, which is 19% 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 155.1 kB or 85% of the original size.

Image Optimization

-1%

Potential reduce by 22.3 kB

  • Original 2.2 MB
  • After minification 2.1 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. Jhuapl images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 4.9 kB

  • Original 1.0 MB
  • After minification 1.0 MB
  • After compression 1.0 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

-12%

Potential reduce by 19.2 kB

  • Original 161.4 kB
  • After minification 157.7 kB
  • After compression 142.2 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. Jhuapl.edu needs all CSS files to be minified and compressed as it can save up to 19.2 kB or 12% of the original size.

Requests Breakdown

Number of requests can be reduced by 38 (63%)

Requests Now

60

After Optimization

22

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 60 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Jhuapl. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 12 to 1 for JavaScripts and from 28 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

jhuapl.edu accessibility score

99

Accessibility Issues

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

Best Practices

jhuapl.edu best practices score

92

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

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

jhuapl.edu SEO score

85

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

Links do not have descriptive text

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 Jhuapl.edu 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 Jhuapl.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

Open Graph data is detected on the main page of Jhuapl. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: