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www3.epa.gov screenshot

Report Summary

  • 29

    Performance

    Renders faster than
    49% of other websites

  • 98

    Accessibility

    Visual factors better than
    that of 94% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 100

    SEO

    Google-friendlier than
    94% of websites

www3.epa.gov

U.S. Environmental Protection Agency | US EPA

Page Load Speed

1.9 sec in total

First Response

246 ms

Resources Loaded

1.3 sec

Page Rendered

367 ms

www3.epa.gov screenshot

About Website

Click here to check amazing Www 3 EPA content for United States. Otherwise, check out these important facts you probably never knew about www3.epa.gov

Website of the U.S. Environmental Protection Agency (EPA). EPA's mission is to protect human health and the environment.

Visit www3.epa.gov

Key Findings

We analyzed Www3.epa.gov page load time and found that the first response time was 246 ms and then it took 1.6 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

www3.epa.gov performance score

29

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.2 s

44/100

10%

LCP (Largest Contentful Paint)

Value13.2 s

0/100

25%

SI (Speed Index)

Value6.4 s

40/100

10%

TBT (Total Blocking Time)

Value1,110 ms

23/100

30%

CLS (Cumulative Layout Shift)

Value0.136

80/100

15%

TTI (Time to Interactive)

Value12.1 s

16/100

10%

Network Requests Diagram

www3.epa.gov

246 ms

www.epa.gov

97 ms

ajax-progress.module.css

10 ms

autocomplete-loading.module.css

14 ms

js.module.css

14 ms

Our browser made a total of 77 requests to load all elements on the main page. We found that 1% of them (1 request) were addressed to the original Www3.epa.gov, 97% (75 requests) were made to Epa.gov and 1% (1 request) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (567 ms) relates to the external source Googletagmanager.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 218.2 kB (15%)

Content Size

1.4 MB

After Optimization

1.2 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Www3.epa.gov main page is 1.4 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 1.1 MB which makes up the majority of the site volume.

HTML Optimization

-77%

Potential reduce by 58.2 kB

  • Original 75.3 kB
  • After minification 69.6 kB
  • After compression 17.1 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 58.2 kB or 77% of the original size.

Image Optimization

-5%

Potential reduce by 53.5 kB

  • Original 1.1 MB
  • After minification 1.1 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. Www 3 EPA images are well optimized though.

JavaScript Optimization

-7%

Potential reduce by 10.6 kB

  • Original 145.5 kB
  • After minification 143.6 kB
  • After compression 134.9 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. This website has mostly compressed JavaScripts.

CSS Optimization

-96%

Potential reduce by 96.0 kB

  • Original 99.9 kB
  • After minification 6.5 kB
  • After compression 4.0 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. Www3.epa.gov needs all CSS files to be minified and compressed as it can save up to 96.0 kB or 96% of the original size.

Requests Breakdown

Number of requests can be reduced by 55 (76%)

Requests Now

72

After Optimization

17

  • Images
  • JavaScript
  • CSS

The browser has sent 72 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Www 3 EPA. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 37 to 1 for JavaScripts and from 20 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

www3.epa.gov

www3.epa.gov

246 ms

www.epa.gov

www.epa.gov

97 ms

ajax-progress.module.css

ajax-progress.module.css

10 ms

autocomplete-loading.module.css

autocomplete-loading.module.css

14 ms

js.module.css

js.module.css

14 ms

sticky-header.module.css

sticky-header.module.css

14 ms

system-status-counter.css

system-status-counter.css

16 ms

system-status-report-counters.css

system-status-report-counters.css

16 ms

system-status-report-general-info.css

system-status-report-general-info.css

14 ms

tabledrag.module.css

tabledrag.module.css

23 ms

tablesort.module.css

tablesort.module.css

21 ms

tree-child.module.css

tree-child.module.css

17 ms

views.module.css

views.module.css

17 ms

paragraphs.unpublished.css

paragraphs.unpublished.css

19 ms

noto-sans-arabic.css

noto-sans-arabic.css

21 ms

noto-sans-kr.css

noto-sans-kr.css

25 ms

noto-sans-bn.css

noto-sans-bn.css

24 ms

noto-sans-gu.css

noto-sans-gu.css

26 ms

noto-sans-sc.css

noto-sans-sc.css

26 ms

noto-sans-tc.css

noto-sans-tc.css

30 ms

styles.css

styles.css

34 ms

colorbox.min.css

colorbox.min.css

30 ms

jquery.min.js

jquery.min.js

29 ms

nodelist.foreach.js

nodelist.foreach.js

33 ms

element.matches.js

element.matches.js

29 ms

object.assign.js

object.assign.js

187 ms

css.escape.js

css.escape.js

185 ms

es6-promise.auto.min.js

es6-promise.auto.min.js

186 ms

once.min.js

once.min.js

185 ms

jquery.once.min.js

jquery.once.min.js

189 ms

drupalSettingsLoader.js

drupalSettingsLoader.js

164 ms

drupal.js

drupal.js

191 ms

drupal.init.js

drupal.init.js

189 ms

picturefill.min.js

picturefill.min.js

191 ms

index.umd.min.js

index.umd.min.js

276 ms

epaNew.js

epaNew.js

278 ms

progress.js

progress.js

277 ms

jquery.once.bc.js

jquery.once.bc.js

278 ms

loadjs.min.js

loadjs.min.js

277 ms

responsive_image.ajax.js

responsive_image.ajax.js

274 ms

ajax.js

ajax.js

272 ms

ajax.js

ajax.js

274 ms

common.min.js

common.min.js

274 ms

scripts.min.js

scripts.min.js

273 ms

header-search.min.js

header-search.min.js

277 ms

epa-alerts.min.js

epa-alerts.min.js

274 ms

sitewide-alert.min.js

sitewide-alert.min.js

273 ms

private-sitewide-alert.min.js

private-sitewide-alert.min.js

273 ms

definition.min.js

definition.min.js

285 ms

external-links.min.js

external-links.min.js

287 ms

protected-links.min.js

protected-links.min.js

282 ms

vid-copy.min.js

vid-copy.min.js

283 ms

jquery.form.min.js

jquery.form.min.js

290 ms

base.js

base.js

292 ms

ajax_view.js

ajax_view.js

289 ms

media-link.min.js

media-link.min.js

289 ms

hero-slideshow.min.js

hero-slideshow.min.js

290 ms

jquery.cycle.all.js

jquery.cycle.all.js

290 ms

gtm.js

gtm.js

567 ms

us_flag_small.png

us_flag_small.png

404 ms

expand_more.svg

expand_more.svg

399 ms

icon-dot-gov.svg

icon-dot-gov.svg

401 ms

NotoSansArabic-Regular.ttf

NotoSansArabic-Regular.ttf

384 ms

NotoSansArabic-Bold.ttf

NotoSansArabic-Bold.ttf

388 ms

icon-https.svg

icon-https.svg

380 ms

20240815_oggrf_hero.jpg

20240815_oggrf_hero.jpg

384 ms

scientists.png

scientists.png

379 ms

MicrosoftTeams-image%20%2823%29.png

MicrosoftTeams-image%20%2823%29.png

381 ms

scott-graham-5fNmWej4tAA-unsplash.jpg

scott-graham-5fNmWej4tAA-unsplash.jpg

394 ms

bil%20map.jpg

bil%20map.jpg

302 ms

earth_sunrise.png

earth_sunrise.png

299 ms

istock-1002010762_731by350.jpg

istock-1002010762_731by350.jpg

297 ms

capre-reinga.jpg

capre-reinga.jpg

297 ms

smoke-plumes-over-missoula-mt-2017-epa-photo.png

smoke-plumes-over-missoula-mt-2017-epa-photo.png

300 ms

epa-seal.svg

epa-seal.svg

303 ms

sprite.artifact.svg

sprite.artifact.svg

296 ms

headquarters-226129

headquarters-226129

46 ms

Accessibility Review

www3.epa.gov accessibility score

98

Accessibility Issues

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

[aria-hidden="true"] elements contain focusable descendents

Best Practices

www3.epa.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

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

www3.epa.gov SEO score

100

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

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 Www3.epa.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 Www3.epa.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

www3.epa.gov

Open Graph data is detected on the main page of Www 3 EPA. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: