Tools & Wizards About Us
americanbls.com screenshot

Report Summary

  • 55

    Performance

    Renders faster than
    72% of other websites

  • 98

    Accessibility

    Visual factors better than
    that of 94% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 93

    SEO

    Google-friendlier than
    83% of websites

americanbls.com

American BLS+ | Free CPR Classes and CPR/BLS Certification Online.

Page Load Speed

3.2 sec in total

First Response

76 ms

Resources Loaded

1.3 sec

Page Rendered

1.8 sec

americanbls.com screenshot

About Website

Visit americanbls.com now to see the best up-to-date American BLS content and also check out these interesting facts you probably never knew about americanbls.com

American BLS offers free CPR classes online. Training class include CPR, AED, First Aid or Bloodborne Pathogens. BLS certification options available.

Visit americanbls.com

Key Findings

We analyzed Americanbls.com page load time and found that the first response time was 76 ms and then it took 3.1 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.

Performance Metrics

americanbls.com performance score

55

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.5 s

33/100

10%

LCP (Largest Contentful Paint)

Value6.8 s

7/100

25%

SI (Speed Index)

Value5.0 s

63/100

10%

TBT (Total Blocking Time)

Value260 ms

83/100

30%

CLS (Cumulative Layout Shift)

Value0.012

100/100

15%

TTI (Time to Interactive)

Value8.0 s

42/100

10%

Network Requests Diagram

americanbls.com

76 ms

www.americanbls.com

205 ms

autoptimize_94ce9232d3cf0845d0d44f72f2933115.css

61 ms

autoptimize_single_d558cc84531b8847c1fceea5d2788841.css

73 ms

autoptimize_single_d0a81efd17043c5ffe658fe6028cf6b7.css

73 ms

Our browser made a total of 37 requests to load all elements on the main page. We found that 5% of them (2 requests) were addressed to the original Americanbls.com, 51% (19 requests) were made to Fonts.gstatic.com and 35% (13 requests) were made to Eadn-wc05-4166114.nxedge.io. The less responsive or slowest element that took the longest time to load (205 ms) belongs to the original domain Americanbls.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 147.2 kB (31%)

Content Size

469.7 kB

After Optimization

322.5 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Americanbls.com main page is 469.7 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. 50% of websites need less resources to load. Images take 296.6 kB which makes up the majority of the site volume.

HTML Optimization

-86%

Potential reduce by 111.1 kB

  • Original 129.7 kB
  • After minification 129.7 kB
  • After compression 18.6 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 111.1 kB or 86% of the original size.

Image Optimization

-0%

Potential reduce by 0 B

  • Original 296.6 kB
  • After minification 296.6 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. American BLS images are well optimized though.

JavaScript Optimization

-2%

Potential reduce by 15 B

  • Original 773 B
  • After minification 773 B
  • After compression 758 B

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

-85%

Potential reduce by 36.1 kB

  • Original 42.6 kB
  • After minification 6.6 kB
  • After compression 6.6 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. Americanbls.com needs all CSS files to be minified and compressed as it can save up to 36.1 kB or 85% of the original size.

Requests Breakdown

Number of requests can be reduced by 12 (75%)

Requests Now

16

After Optimization

4

  • Images
  • JavaScript
  • CSS

The browser has sent 16 CSS, Javascripts, AJAX and image requests in order to completely render the main page of American BLS. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 7 to 1 for JavaScripts and from 7 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

americanbls.com

americanbls.com

76 ms

www.americanbls.com

www.americanbls.com

205 ms

autoptimize_94ce9232d3cf0845d0d44f72f2933115.css

autoptimize_94ce9232d3cf0845d0d44f72f2933115.css

61 ms

autoptimize_single_d558cc84531b8847c1fceea5d2788841.css

autoptimize_single_d558cc84531b8847c1fceea5d2788841.css

73 ms

autoptimize_single_d0a81efd17043c5ffe658fe6028cf6b7.css

autoptimize_single_d0a81efd17043c5ffe658fe6028cf6b7.css

73 ms

autoptimize_single_b8476ce860fe2c19474f2a79ebcd67ca.css

autoptimize_single_b8476ce860fe2c19474f2a79ebcd67ca.css

97 ms

autoptimize_single_90421bb8c7e70bc236fa16425c348ba9.css

autoptimize_single_90421bb8c7e70bc236fa16425c348ba9.css

76 ms

script.js

script.js

26 ms

js

js

70 ms

css

css

45 ms

lazysizes.min.js

lazysizes.min.js

53 ms

autoptimize_single_ee722500fb4116d4376e700bc7a88883.css

autoptimize_single_ee722500fb4116d4376e700bc7a88883.css

55 ms

jquery.min.js

jquery.min.js

56 ms

hooks.min.js

hooks.min.js

56 ms

i18n.min.js

i18n.min.js

57 ms

autoptimize_7058d012be164dcdcf4133dccdf309f3.js

autoptimize_7058d012be164dcdcf4133dccdf309f3.js

74 ms

professionals-taking-cpr-course.jpg

professionals-taking-cpr-course.jpg

23 ms

online-bls-courses.jpg

online-bls-courses.jpg

23 ms

iJWZBXyIfDnIV5PNhY1KTN7Z-Yh-B4iFV0Uz.woff

iJWZBXyIfDnIV5PNhY1KTN7Z-Yh-B4iFV0Uz.woff

30 ms

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iJWZBXyIfDnIV5PNhY1KTN7Z-Yh-NYiFV0Uz.woff

53 ms

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iJWZBXyIfDnIV5PNhY1KTN7Z-Yh-WYiFV0Uz.woff

54 ms

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55 ms

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55 ms

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iJWZBXyIfDnIV5PNhY1KTN7Z-Yh-h4-FV0Uz.woff

57 ms

iJWZBXyIfDnIV5PNhY1KTN7Z-Yh-ro-FV0Uz.woff

iJWZBXyIfDnIV5PNhY1KTN7Z-Yh-ro-FV0Uz.woff

55 ms

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56 ms

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57 ms

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60 ms

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59 ms

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58 ms

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62 ms

Accessibility Review

americanbls.com accessibility score

98

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.

Best Practices

americanbls.com 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

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

americanbls.com 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 Americanbls.com 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 Americanbls.com 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

americanbls.com

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