Tools & Wizards About Us
pnnl.gov screenshot

Report Summary

  • 13

    Performance

    Renders faster than
    25% of other websites

  • 81

    Accessibility

    Visual factors better than
    that of 51% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 93

    SEO

    Google-friendlier than
    83% of websites

pnnl.gov

Pacific Northwest National Laboratory | PNNL

Page Load Speed

3.9 sec in total

First Response

355 ms

Resources Loaded

3 sec

Page Rendered

544 ms

pnnl.gov screenshot

About Website

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

PNNL advances the frontiers of knowledge, taking on some of the world’s greatest science and technology challenges.

Visit pnnl.gov

Key Findings

We analyzed Pnnl.gov page load time and found that the first response time was 355 ms and then it took 3.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.

Performance Metrics

pnnl.gov performance score

13

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value8.4 s

0/100

10%

LCP (Largest Contentful Paint)

Value14.5 s

0/100

25%

SI (Speed Index)

Value16.3 s

0/100

10%

TBT (Total Blocking Time)

Value42,310 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.102

89/100

15%

TTI (Time to Interactive)

Value59.4 s

0/100

10%

Network Requests Diagram

www.pnnl.gov

355 ms

basic.css

150 ms

pnnl.css

157 ms

pnnl.js

356 ms

homepage.css

229 ms

Our browser made a total of 38 requests to load all elements on the main page. We found that 84% of them (32 requests) were addressed to the original Pnnl.gov, 16% (6 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (1.9 sec) belongs to the original domain Pnnl.gov.

Page Optimization Overview & Recommendations

Page size can be reduced by 383.0 kB (4%)

Content Size

10.0 MB

After Optimization

9.6 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Pnnl.gov main page is 10.0 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. 30% of websites need less resources to load. Images take 9.8 MB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 19.6 kB

  • Original 25.0 kB
  • After minification 19.0 kB
  • After compression 5.4 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 6.0 kB, which is 24% 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 19.6 kB or 78% of the original size.

Image Optimization

-3%

Potential reduce by 248.3 kB

  • Original 9.8 MB
  • After minification 9.5 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. PNNL images are well optimized though.

JavaScript Optimization

-53%

Potential reduce by 77.4 kB

  • Original 146.2 kB
  • After minification 128.8 kB
  • After compression 68.8 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 77.4 kB or 53% of the original size.

CSS Optimization

-80%

Potential reduce by 37.7 kB

  • Original 47.3 kB
  • After minification 33.8 kB
  • After compression 9.6 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. Pnnl.gov needs all CSS files to be minified and compressed as it can save up to 37.7 kB or 80% of the original size.

Requests Breakdown

Number of requests can be reduced by 21 (57%)

Requests Now

37

After Optimization

16

  • Images
  • JavaScript
  • CSS

The browser has sent 37 CSS, Javascripts, AJAX and image requests in order to completely render the main page of PNNL. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 8 to 1 for JavaScripts and from 7 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

www.pnnl.gov

www.pnnl.gov

355 ms

basic.css

basic.css

150 ms

pnnl.css

pnnl.css

157 ms

pnnl.js

pnnl.js

356 ms

homepage.css

homepage.css

229 ms

jquery.hrzAccordion.js

jquery.hrzAccordion.js

242 ms

jquery.cycle.min.js

jquery.cycle.min.js

245 ms

jcarousellite_1.0.1.min.js

jcarousellite_1.0.1.min.js

222 ms

ui.tabs.js

ui.tabs.js

308 ms

jquery.carousel.pnnl.css

jquery.carousel.pnnl.css

303 ms

ui.tabs.css

ui.tabs.css

305 ms

ga.js

ga.js

59 ms

analytics.js

analytics.js

59 ms

pnnl_logo_battelle.png

pnnl_logo_battelle.png

81 ms

doe_seal_plus_name.png

doe_seal_plus_name.png

78 ms

search_button.png

search_button.png

78 ms

copper_shadow_gradient.png

copper_shadow_gradient.png

79 ms

02_16_hl_BiofuelTechStraight.jpg

02_16_hl_BiofuelTechStraight.jpg

539 ms

02_16_hl_HowToMakeAModernGrid.jpg

02_16_hl_HowToMakeAModernGrid.jpg

469 ms

02_16_hl_PNNL_Innovation_V2.jpg

02_16_hl_PNNL_Innovation_V2.jpg

539 ms

02_16_hl_OptimizingMicrobial.jpg

02_16_hl_OptimizingMicrobial.jpg

537 ms

02_16_hl_IceClouds.jpg

02_16_hl_IceClouds.jpg

546 ms

pause_btn.png

pause_btn.png

157 ms

lab_news_bg.png

lab_news_bg.png

235 ms

20160217135325032.jpg

20160217135325032.jpg

1850 ms

feed.png

feed.png

549 ms

pnnl_homepage_graphics3.png

pnnl_homepage_graphics3.png

922 ms

pnnl_homepage_graphics.png

pnnl_homepage_graphics.png

839 ms

bronze_shadow_gradient.png

bronze_shadow_gradient.png

615 ms

bullet_square.png

bullet_square.png

622 ms

footer_tagline.png

footer_tagline.png

624 ms

tab.png

tab.png

693 ms

__utm.gif

__utm.gif

12 ms

linkid.js

linkid.js

17 ms

collect

collect

12 ms

collect

collect

12 ms

print.css

print.css

83 ms

handheld.css

handheld.css

81 ms

Accessibility Review

pnnl.gov accessibility score

81

Accessibility Issues

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

Buttons do not have an accessible name

High

<frame> or <iframe> elements do not have a title

High

Form elements do not have associated labels

Best Practices

pnnl.gov 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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

pnnl.gov SEO score

93

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

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

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 Pnnl.gov 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 Pnnl.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

pnnl.gov

Open Graph description is not detected on the main page of PNNL. 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: