Tools & Wizards About Us
heinemann.com screenshot

Report Summary

  • 3

    Performance

    Renders faster than
    20% of other websites

  • 93

    Accessibility

    Visual factors better than
    that of 80% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    20% of websites

  • 100

    SEO

    Google-friendlier than
    94% of websites

heinemann.com

Heinemann | Publisher of professional resources and provider of educational services for teachers

Page Load Speed

5.3 sec in total

First Response

1.3 sec

Resources Loaded

3.6 sec

Page Rendered

436 ms

heinemann.com screenshot

About Website

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

Heinemann is a publisher of professional resources and a provider of educational services for teachers and educators from kindergarten through college.

Visit heinemann.com

Key Findings

We analyzed Heinemann.com page load time and found that the first response time was 1.3 sec and then it took 4 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

heinemann.com performance score

3

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.3 s

7/100

10%

LCP (Largest Contentful Paint)

Value18.9 s

0/100

25%

SI (Speed Index)

Value13.9 s

1/100

10%

TBT (Total Blocking Time)

Value2,970 ms

3/100

30%

CLS (Cumulative Layout Shift)

Value0.617

10/100

15%

TTI (Time to Interactive)

Value39.9 s

0/100

10%

Network Requests Diagram

www.heinemann.com

1252 ms

slick-theme.css

57 ms

slick.css

72 ms

slick.css

39 ms

foundation.css

43 ms

Our browser made a total of 169 requests to load all elements on the main page. We found that 54% of them (91 requests) were addressed to the original Heinemann.com, 4% (7 requests) were made to Fast.wistia.net and 4% (6 requests) were made to 197281.fs1.hubspotusercontent-na1.net. The less responsive or slowest element that took the longest time to load (1.4 sec) belongs to the original domain Heinemann.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.3 MB (12%)

Content Size

10.6 MB

After Optimization

9.2 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Heinemann.com main page is 10.6 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. Only a small number of websites need less resources to load. Images take 9.0 MB which makes up the majority of the site volume.

HTML Optimization

-84%

Potential reduce by 127.2 kB

  • Original 151.9 kB
  • After minification 120.9 kB
  • After compression 24.7 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 31.0 kB, which is 20% 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 127.2 kB or 84% of the original size.

Image Optimization

-7%

Potential reduce by 666.9 kB

  • Original 9.0 MB
  • After minification 8.4 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. Heinemann images are well optimized though.

JavaScript Optimization

-41%

Potential reduce by 512.1 kB

  • Original 1.3 MB
  • After minification 1.3 MB
  • After compression 749.2 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 512.1 kB or 41% of the original size.

CSS Optimization

-14%

Potential reduce by 12.6 kB

  • Original 90.8 kB
  • After minification 90.8 kB
  • After compression 78.2 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. Heinemann.com needs all CSS files to be minified and compressed as it can save up to 12.6 kB or 14% of the original size.

Requests Breakdown

Number of requests can be reduced by 75 (50%)

Requests Now

150

After Optimization

75

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 150 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Heinemann. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 52 to 1 for JavaScripts and from 15 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

www.heinemann.com

www.heinemann.com

1252 ms

slick-theme.css

slick-theme.css

57 ms

slick.css

slick.css

72 ms

slick.css

slick.css

39 ms

foundation.css

foundation.css

43 ms

jquery.flextabs.css

jquery.flextabs.css

42 ms

jquery.flextabs.theme-default.css

jquery.flextabs.theme-default.css

41 ms

heinemann.js

heinemann.js

62 ms

screen-1.css

screen-1.css

55 ms

screen-07102023.min.css

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53 ms

css

css

70 ms

modernizr-custom.js

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58 ms

scripts.js

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58 ms

197281.js

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176 ms

jquery-3.3.1.min.js

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61 ms

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135 ms

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161 ms

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tooltipster.bundle.min.css

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tooltipster.bundle.js

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63 ms

focus-within-polyfill.js

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172 ms

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119 ms

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gtm.js

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176 ms

mobile-logo.png

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71 ms

icon-search-white-2x.png

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73 ms

mobile-nav-icon-2x.png

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99 ms

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75 ms

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swatch

swatch

43 ms

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364 ms

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771 ms

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693 ms

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676 ms

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680 ms

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720 ms

popover-v1.js

popover-v1.js

39 ms

embed_shepherd-v1.js

embed_shepherd-v1.js

130 ms

foundation.min.js

foundation.min.js

29 ms

slick.js

slick.js

678 ms

jquery.form-validator.min.js

jquery.form-validator.min.js

686 ms

banner.js

banner.js

123 ms

web-interactives-embed.js

web-interactives-embed.js

176 ms

fb.js

fb.js

49 ms

197281.js

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57 ms

common-02042021.js

common-02042021.js

662 ms

_Incapsula_Resource

_Incapsula_Resource

661 ms

imageMapResizer.min.js

imageMapResizer.min.js

713 ms

jquery.flextabs.min.js

jquery.flextabs.min.js

663 ms

tooltipster-sidetip-shadow.min.css

tooltipster-sidetip-shadow.min.css

660 ms

heinemann-math.png

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733 ms

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36 ms

pd_home_virtual_image.jpg

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669 ms

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js

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264 ms

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229 ms

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256 ms

hotjar-1696046.js

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402 ms

bat.js

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400 ms

up_loader.1.1.0.js

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402 ms

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409 ms

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183 ms

LB-Zone-3

LB-Zone-3

245 ms

icon-social-blog.png

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608 ms

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640 ms

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639 ms

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740 ms

fpc-brand-productimage.jpg

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742 ms

mbtb_allcovers_bundle.png

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738 ms

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717 ms

wuos3.png

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540 ms

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collect

166 ms

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205 ms

cs

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40 ms

modules.1a30a0a67c3c23c13060.js

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30 ms

collect

collect

29 ms

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18 ms

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467 ms

ga-audiences

ga-audiences

54 ms

45 ms

17 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsjZ0B4gaVQ.woff

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60 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsgH1x4gaVQ.woff

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80 ms

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86 ms

icon-search-white.png

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213 ms

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212 ms

homepage-mask-2.png

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215 ms

uos-banner-042924.png

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355 ms

Heard_Slider.jpg

Heard_Slider.jpg

214 ms

Honigsfeld_web_slider.png

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218 ms

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215 ms

uos-jrr-banner.png

uos-jrr-banner.png

1357 ms

HNM_SerravalloWSB_2024_Companion_Charts_Banner.png

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221 ms

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220 ms

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274 ms

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48 ms

imagemapresizer.min.js

imagemapresizer.min.js

192 ms

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31 ms

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134 ms

swatch

swatch

134 ms

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71 ms

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70 ms

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428 ms

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55 ms

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externalPlayer.js

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Accessibility Review

heinemann.com 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

Tables and lists

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

Impact

Issue

High

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

Best Practices

heinemann.com best practices score

58

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Displays images with incorrect aspect ratio

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

heinemann.com 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 Heinemann.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 Heinemann.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

heinemann.com

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