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stem.org screenshot

Report Summary

  • 75

    Performance

    Renders faster than
    83% of other websites

  • 76

    Accessibility

    Visual factors better than
    that of 42% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 76

    SEO

    Google-friendlier than
    35% of websites

stem.org

One moment, please...

Page Load Speed

2.5 sec in total

First Response

54 ms

Resources Loaded

868 ms

Page Rendered

1.6 sec

stem.org screenshot

About Website

Click here to check amazing Stem content for Indonesia. Otherwise, check out these important facts you probably never knew about stem.org

STEM.org is the longest continually-operating, privately-held STEM education research organization in America —serving schools, districts, organizations and the world’s top brands in over 25 countries...

Visit stem.org

Key Findings

We analyzed Stem.org page load time and found that the first response time was 54 ms and then it took 2.4 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.

Performance Metrics

stem.org performance score

75

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.2 s

44/100

10%

LCP (Largest Contentful Paint)

Value4.5 s

37/100

25%

SI (Speed Index)

Value3.2 s

92/100

10%

TBT (Total Blocking Time)

Value140 ms

95/100

30%

CLS (Cumulative Layout Shift)

Value0.013

100/100

15%

TTI (Time to Interactive)

Value4.3 s

84/100

10%

Network Requests Diagram

stem.org

54 ms

stem.org

76 ms

formidableforms.css

22 ms

index.css

46 ms

upe_blocks.css

51 ms

Our browser made a total of 59 requests to load all elements on the main page. We found that 76% of them (45 requests) were addressed to the original Stem.org, 15% (9 requests) were made to Fonts.gstatic.com and 3% (2 requests) were made to Fonts.googleapis.com. The less responsive or slowest element that took the longest time to load (428 ms) belongs to the original domain Stem.org.

Page Optimization Overview & Recommendations

Page size can be reduced by 144.7 kB (6%)

Content Size

2.6 MB

After Optimization

2.4 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Stem.org main page is 2.6 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. 65% of websites need less resources to load. Images take 2.2 MB which makes up the majority of the site volume.

HTML Optimization

-77%

Potential reduce by 129.6 kB

  • Original 168.9 kB
  • After minification 161.7 kB
  • After compression 39.3 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 129.6 kB or 77% of the original size.

Image Optimization

-1%

Potential reduce by 14.6 kB

  • Original 2.2 MB
  • After minification 2.2 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. Stem images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 40 B

  • Original 41.2 kB
  • After minification 41.2 kB
  • After compression 41.2 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. This website has mostly compressed JavaScripts.

CSS Optimization

-0%

Potential reduce by 436 B

  • Original 153.2 kB
  • After minification 153.2 kB
  • After compression 152.8 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. Stem.org has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 22 (47%)

Requests Now

47

After Optimization

25

  • Images
  • JavaScript
  • CSS

The browser has sent 47 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Stem. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 23 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

stem.org

stem.org

54 ms

stem.org

stem.org

76 ms

formidableforms.css

formidableforms.css

22 ms

index.css

index.css

46 ms

upe_blocks.css

upe_blocks.css

51 ms

style.min.css

style.min.css

51 ms

woocommerce-layout.css

woocommerce-layout.css

58 ms

woocommerce.css

woocommerce.css

45 ms

style.min.css

style.min.css

53 ms

latest.css

latest.css

58 ms

genericons.css

genericons.css

60 ms

style.css

style.css

74 ms

blocks.css

blocks.css

58 ms

jquery.min.js

jquery.min.js

69 ms

w.js

w.js

33 ms

bootstrap.min.css

bootstrap.min.css

82 ms

slick.css

slick.css

80 ms

font-awesome.min.css

font-awesome.min.css

63 ms

jquery.fancybox.min.css

jquery.fancybox.min.css

79 ms

modern-ticker.css

modern-ticker.css

69 ms

formreset.min.css

formreset.min.css

78 ms

formsmain.min.css

formsmain.min.css

80 ms

readyclass.min.css

readyclass.min.css

81 ms

browsers.min.css

browsers.min.css

82 ms

lazysizes.min.js

lazysizes.min.js

83 ms

css

css

54 ms

css2

css2

42 ms

woocommerce-smallscreen.css

woocommerce-smallscreen.css

10 ms

prev.png

prev.png

376 ms

next.png

next.png

261 ms

ataglance-bg-min2.png

ataglance-bg-min2.png

403 ms

industry-std-bg.jpg

industry-std-bg.jpg

330 ms

about-bg.png

about-bg.png

401 ms

served-bg.jpg

served-bg.jpg

259 ms

innovations-bg.png

innovations-bg.png

329 ms

timeline2.png

timeline2.png

331 ms

mathbg.jpg

mathbg.jpg

330 ms

teambg2.png

teambg2.png

381 ms

phoneiconsub.png

phoneiconsub.png

378 ms

handlenssub.png

handlenssub.png

380 ms

footerbg.png

footerbg.png

378 ms

formbg.png

formbg.png

398 ms

preloader-white.gif

preloader-white.gif

399 ms

bullet-over-fafafa.png

bullet-over-fafafa.png

399 ms

pause-fafafa.png

pause-fafafa.png

399 ms

prev-fafafa.png

prev-fafafa.png

428 ms

play-fafafa.png

play-fafafa.png

428 ms

next-fafafa.png

next-fafafa.png

428 ms

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCtr6Hw3aX8.ttf

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCtr6Hw3aX8.ttf

258 ms

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCtZ6Hw3aX8.ttf

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCtZ6Hw3aX8.ttf

314 ms

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCu173w3aX8.ttf

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCu173w3aX8.ttf

332 ms

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCuM73w3aX8.ttf

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCuM73w3aX8.ttf

331 ms

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCvC73w3aX8.ttf

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCvC73w3aX8.ttf

331 ms

JTUFjIg1_i6t8kCHKm459Wx7xQYXK0vOoz6jqw16WXZ0ow.ttf

JTUFjIg1_i6t8kCHKm459Wx7xQYXK0vOoz6jqw16WXZ0ow.ttf

86 ms

JTUFjIg1_i6t8kCHKm459Wx7xQYXK0vOoz6jq3p6WXZ0ow.ttf

JTUFjIg1_i6t8kCHKm459Wx7xQYXK0vOoz6jq3p6WXZ0ow.ttf

85 ms

KFOlCnqEu92Fr1MmEU9fChc9.ttf

KFOlCnqEu92Fr1MmEU9fChc9.ttf

85 ms

KFOmCnqEu92Fr1Mu7GxP.ttf

KFOmCnqEu92Fr1Mu7GxP.ttf

132 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

151 ms

g.gif

g.gif

111 ms

Accessibility Review

stem.org accessibility score

76

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

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Best Practices

stem.org 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

stem.org SEO score

76

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

High

Image elements do not have [alt] attributes

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

Links are not crawlable

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

High

Tap targets are not sized appropriately

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 Stem.org 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 Stem.org 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

stem.org

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