Tools & Wizards About Us
donotcall.gov screenshot

Report Summary

  • 59

    Performance

    Renders faster than
    74% of other websites

  • 93

    Accessibility

    Visual factors better than
    that of 80% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 100

    SEO

    Google-friendlier than
    94% of websites

donotcall.gov

National Do Not Call Registry

Page Load Speed

595 ms in total

First Response

45 ms

Resources Loaded

406 ms

Page Rendered

144 ms

donotcall.gov screenshot

About Website

Visit donotcall.gov now to see the best up-to-date Do Not Call content for United States and also check out these interesting facts you probably never knew about donotcall.gov

Register your phone number to report stop or block unwanted, annoying,telemarketing, spam calls, robocalls to the FTC

Visit donotcall.gov

Key Findings

We analyzed Donotcall.gov page load time and found that the first response time was 45 ms and then it took 550 ms to load all DOM resources and completely render a web page. This is quite a good result, as only 10% of websites can load faster.

Performance Metrics

donotcall.gov performance score

59

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.6 s

64/100

10%

LCP (Largest Contentful Paint)

Value4.3 s

42/100

25%

SI (Speed Index)

Value2.6 s

97/100

10%

TBT (Total Blocking Time)

Value300 ms

79/100

30%

CLS (Cumulative Layout Shift)

Value0.527

14/100

15%

TTI (Time to Interactive)

Value5.5 s

70/100

10%

Network Requests Diagram

www.donotcall.gov

45 ms

js

82 ms

gafourprod.js

21 ms

styles.css

43 ms

analytics.js

32 ms

Our browser made a total of 36 requests to load all elements on the main page. We found that 81% of them (29 requests) were addressed to the original Donotcall.gov, 8% (3 requests) were made to Googletagmanager.com and 8% (3 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (131 ms) belongs to the original domain Donotcall.gov.

Page Optimization Overview & Recommendations

Page size can be reduced by 27.4 kB (8%)

Content Size

334.4 kB

After Optimization

307.0 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Donotcall.gov main page is 334.4 kB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 60% of websites need less resources to load. Images take 228.9 kB which makes up the majority of the site volume.

HTML Optimization

-76%

Potential reduce by 7.4 kB

  • Original 9.7 kB
  • After minification 8.9 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. 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 7.4 kB or 76% of the original size.

Image Optimization

-2%

Potential reduce by 4.1 kB

  • Original 228.9 kB
  • After minification 224.8 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. Do Not Call images are well optimized though.

JavaScript Optimization

-14%

Potential reduce by 12.4 kB

  • Original 86.8 kB
  • After minification 86.8 kB
  • After compression 74.4 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 12.4 kB or 14% of the original size.

CSS Optimization

-40%

Potential reduce by 3.6 kB

  • Original 9.0 kB
  • After minification 9.0 kB
  • After compression 5.4 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. Donotcall.gov needs all CSS files to be minified and compressed as it can save up to 3.6 kB or 40% of the original size.

Requests Breakdown

Number of requests can be reduced by 16 (46%)

Requests Now

35

After Optimization

19

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 35 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Do Not Call. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 17 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

www.donotcall.gov

www.donotcall.gov

45 ms

js

js

82 ms

gafourprod.js

gafourprod.js

21 ms

styles.css

styles.css

43 ms

analytics.js

analytics.js

32 ms

Universal-Federated-Analytics-Min.js

Universal-Federated-Analytics-Min.js

28 ms

jquery-3.7.1.js

jquery-3.7.1.js

65 ms

CLDRPluralRuleParser.js

CLDRPluralRuleParser.js

75 ms

jquery.i18n.js

jquery.i18n.js

37 ms

jquery.i18n.messagestore.js

jquery.i18n.messagestore.js

40 ms

jquery.i18n.fallbacks.js

jquery.i18n.fallbacks.js

63 ms

jquery.i18n.language.js

jquery.i18n.language.js

75 ms

jquery.i18n.parser.js

jquery.i18n.parser.js

74 ms

jquery.i18n.emitter.js

jquery.i18n.emitter.js

76 ms

jquery.i18n.emitter.bidi.js

jquery.i18n.emitter.bidi.js

77 ms

menu.js

menu.js

107 ms

global.js

global.js

108 ms

js

js

69 ms

collect

collect

50 ms

collect

collect

53 ms

background-s.jpg

background-s.jpg

51 ms

masthead.jpg

masthead.jpg

47 ms

FTC_DNC_masthead.jpg

FTC_DNC_masthead.jpg

120 ms

mobile_dnc_masthead_sm_3.jpg

mobile_dnc_masthead_sm_3.jpg

46 ms

btn_enespanol.png

btn_enespanol.png

53 ms

foooter_background_gr.jpg

foooter_background_gr.jpg

52 ms

js

js

121 ms

en-US.json

en-US.json

28 ms

es-MX.json

es-MX.json

29 ms

DNC-masthead.svg

DNC-masthead.svg

114 ms

FTC_DNC_main1_3_submit.jpg

FTC_DNC_main1_3_submit.jpg

113 ms

FTC_DNC_main1_2_verify.jpg

FTC_DNC_main1_2_verify.jpg

83 ms

FTC_DNC_main1_1_register.jpg

FTC_DNC_main1_1_register.jpg

111 ms

submit_gr_sm.gif

submit_gr_sm.gif

83 ms

verify_bl_sm.gif

verify_bl_sm.gif

131 ms

register_or_sm.gif

register_or_sm.gif

113 ms

Accessibility Review

donotcall.gov accessibility score

93

Accessibility Issues

Contrast

These are opportunities to improve the legibility of your content.

Impact

Issue

High

Background and foreground colors do not have a sufficient contrast ratio.

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

Links do not have a discernible name

Best Practices

donotcall.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

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

High

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

donotcall.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 Donotcall.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 Donotcall.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

donotcall.gov

Open Graph description is not detected on the main page of Do Not Call. 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: