Tools & Wizards About Us
simbio.com screenshot

Report Summary

  • 12

    Performance

    Renders faster than
    25% of other websites

  • 96

    Accessibility

    Visual factors better than
    that of 89% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    81% of websites

  • 92

    SEO

    Google-friendlier than
    75% of websites

simbio.com

Virtual Labs and Interactive Chapters for College Biology Education

Page Load Speed

2.1 sec in total

First Response

635 ms

Resources Loaded

1.3 sec

Page Rendered

151 ms

simbio.com screenshot

About Website

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

SimBio's research-based virtual labs and interactive chapters teach college biology in an inquiry-driven learning style.

Visit simbio.com

Key Findings

We analyzed Simbio.com page load time and found that the first response time was 635 ms and then it took 1.5 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 30% of websites can load faster.

Performance Metrics

simbio.com performance score

12

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.3 s

40/100

10%

LCP (Largest Contentful Paint)

Value13.4 s

0/100

25%

SI (Speed Index)

Value8.9 s

15/100

10%

TBT (Total Blocking Time)

Value2,990 ms

3/100

30%

CLS (Cumulative Layout Shift)

Value0.321

36/100

15%

TTI (Time to Interactive)

Value17.2 s

4/100

10%

Network Requests Diagram

simbio.com

635 ms

button_style.css

70 ms

node.css

143 ms

defaults.css

145 ms

system.css

133 ms

Our browser made a total of 34 requests to load all elements on the main page. We found that 82% of them (28 requests) were addressed to the original Simbio.com, 9% (3 requests) were made to Fonts.gstatic.com and 6% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (635 ms) belongs to the original domain Simbio.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 130.2 kB (26%)

Content Size

510.3 kB

After Optimization

380.1 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Simbio.com main page is 510.3 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. 30% of websites need less resources to load. Images take 324.3 kB which makes up the majority of the site volume.

HTML Optimization

-72%

Potential reduce by 9.8 kB

  • Original 13.5 kB
  • After minification 12.3 kB
  • After compression 3.7 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. 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 9.8 kB or 72% of the original size.

Image Optimization

-1%

Potential reduce by 2.9 kB

  • Original 324.3 kB
  • After minification 321.4 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. Simbio images are well optimized though.

JavaScript Optimization

-61%

Potential reduce by 68.1 kB

  • Original 111.0 kB
  • After minification 88.9 kB
  • After compression 42.8 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 68.1 kB or 61% of the original size.

CSS Optimization

-80%

Potential reduce by 49.5 kB

  • Original 61.6 kB
  • After minification 46.1 kB
  • After compression 12.1 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. Simbio.com needs all CSS files to be minified and compressed as it can save up to 49.5 kB or 80% of the original size.

Requests Breakdown

Number of requests can be reduced by 18 (60%)

Requests Now

30

After Optimization

12

  • Images
  • JavaScript
  • CSS

The browser has sent 30 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Simbio. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 8 to 1 for JavaScripts and from 12 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

simbio.com

simbio.com

635 ms

button_style.css

button_style.css

70 ms

node.css

node.css

143 ms

defaults.css

defaults.css

145 ms

system.css

system.css

133 ms

user.css

user.css

143 ms

content.css

content.css

141 ms

lightbox_alt.css

lightbox_alt.css

149 ms

fieldgroup.css

fieldgroup.css

199 ms

forward.css

forward.css

206 ms

views_slideshow.css

views_slideshow.css

209 ms

style.css

style.css

210 ms

jquery.js

jquery.js

272 ms

drupal.js

drupal.js

213 ms

popup.js

popup.js

282 ms

compat.js

compat.js

267 ms

lightbox_video.js

lightbox_video.js

284 ms

lightbox.js

lightbox.js

283 ms

views_slideshow.js

views_slideshow.js

282 ms

css

css

24 ms

BKG_Header.png

BKG_Header.png

387 ms

BKG_NavBar.png

BKG_NavBar.png

146 ms

BKG_HomeBanner.jpg

BKG_HomeBanner.jpg

201 ms

BKG_Home_4col.jpg

BKG_Home_4col.jpg

135 ms

Home_RevolvePromo.jpg

Home_RevolvePromo.jpg

87 ms

Home_RevolvePromo_6.jpg

Home_RevolvePromo_6.jpg

133 ms

Home_RevolvePromo_3.jpg

Home_RevolvePromo_3.jpg

150 ms

ico-facebk.png

ico-facebk.png

201 ms

ico-mail.png

ico-mail.png

203 ms

ga.js

ga.js

6 ms

toadOcfmlt9b38dHJxOBGLsbIrGiHa6JIepkyt5c0A0.ttf

toadOcfmlt9b38dHJxOBGLsbIrGiHa6JIepkyt5c0A0.ttf

4 ms

ODelI1aHBYDBqgeIAH2zlNzbP97U9sKh0jjxbPbfOKg.ttf

ODelI1aHBYDBqgeIAH2zlNzbP97U9sKh0jjxbPbfOKg.ttf

47 ms

gk5FxslNkTTHtojXrkp-xJhsE6jcpsD2oq89kgohWx0.ttf

gk5FxslNkTTHtojXrkp-xJhsE6jcpsD2oq89kgohWx0.ttf

48 ms

__utm.gif

__utm.gif

10 ms

Accessibility Review

simbio.com accessibility score

96

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

simbio.com best practices score

92

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

Missing source maps for large first-party JavaScript

SEO Factors

simbio.com SEO score

92

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

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Simbio.com can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Simbio.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

simbio.com

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