Tools & Wizards About Us
xenbase.org screenshot

Report Summary

  • 36

    Performance

    Renders faster than
    56% of other websites

  • 80

    Accessibility

    Visual factors better than
    that of 50% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 64

    SEO

    Google-friendlier than
    24% of websites

xenbase.org

Xenbase Home

Page Load Speed

3.5 sec in total

First Response

211 ms

Resources Loaded

2.9 sec

Page Rendered

364 ms

xenbase.org screenshot

About Website

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

Xenbase: The Xenopus Model Organism Knowledgebase.

Visit xenbase.org

Key Findings

We analyzed Xenbase.org page load time and found that the first response time was 211 ms and then it took 3.3 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

xenbase.org performance score

36

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.4 s

16/100

10%

LCP (Largest Contentful Paint)

Value44.6 s

0/100

25%

SI (Speed Index)

Value7.3 s

29/100

10%

TBT (Total Blocking Time)

Value550 ms

54/100

30%

CLS (Cumulative Layout Shift)

Value0.003

100/100

15%

TTI (Time to Interactive)

Value21.2 s

1/100

10%

Network Requests Diagram

xenbase.org

211 ms

www.xenbase.org

261 ms

188 ms

base.css

122 ms

skeleton.css

124 ms

Our browser made a total of 62 requests to load all elements on the main page. We found that 95% of them (59 requests) were addressed to the original Xenbase.org, 5% (3 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (1.6 sec) belongs to the original domain Xenbase.org.

Page Optimization Overview & Recommendations

Page size can be reduced by 607.9 kB (15%)

Content Size

4.2 MB

After Optimization

3.6 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Xenbase.org main page is 4.2 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. 40% of websites need less resources to load. Images take 3.7 MB which makes up the majority of the site volume.

HTML Optimization

-79%

Potential reduce by 51.6 kB

  • Original 64.9 kB
  • After minification 59.9 kB
  • After compression 13.4 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 51.6 kB or 79% of the original size.

Image Optimization

-7%

Potential reduce by 274.5 kB

  • Original 3.7 MB
  • After minification 3.4 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. Xenbase images are well optimized though.

JavaScript Optimization

-67%

Potential reduce by 225.6 kB

  • Original 337.0 kB
  • After minification 329.8 kB
  • After compression 111.4 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 225.6 kB or 67% of the original size.

CSS Optimization

-84%

Potential reduce by 56.3 kB

  • Original 66.8 kB
  • After minification 46.0 kB
  • After compression 10.5 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. Xenbase.org needs all CSS files to be minified and compressed as it can save up to 56.3 kB or 84% of the original size.

Requests Breakdown

Number of requests can be reduced by 23 (39%)

Requests Now

59

After Optimization

36

  • Images
  • JavaScript
  • CSS

The browser has sent 59 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Xenbase. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 11 to 1 for JavaScripts and from 7 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

xenbase.org

xenbase.org

211 ms

www.xenbase.org

www.xenbase.org

261 ms

188 ms

base.css

base.css

122 ms

skeleton.css

skeleton.css

124 ms

layout.css

layout.css

129 ms

flexslider.css

flexslider.css

129 ms

styles.css

styles.css

133 ms

Master-min.css

Master-min.css

186 ms

jquery-1.7.2.min.js

jquery-1.7.2.min.js

304 ms

jquery_functions.js

jquery_functions.js

249 ms

xenbase-pre-min.js

xenbase-pre-min.js

364 ms

minibar.js

minibar.js

252 ms

SearchSuggest.js

SearchSuggest.js

254 ms

jquery.tools.min.js

jquery.tools.min.js

315 ms

jquery.flexslider-min.js

jquery.flexslider-min.js

381 ms

doubleTapToGo-min.js

doubleTapToGo-min.js

381 ms

xenbase-post-min.js

xenbase-post-min.js

331 ms

Header-min.css

Header-min.css

244 ms

analytics.js

analytics.js

27 ms

Xenbase-Logo-Small.png

Xenbase-Logo-Small.png

235 ms

usFlag.svg

usFlag.svg

168 ms

ukFlag.svg

ukFlag.svg

230 ms

frFlag.svg

frFlag.svg

233 ms

jpFlag.svg

jpFlag.svg

234 ms

icon-facebook.png

icon-facebook.png

235 ms

icon-twitter.png

icon-twitter.png

250 ms

frogs03.jpg

frogs03.jpg

743 ms

DB%20SI%20slider.jpg

DB%20SI%20slider.jpg

710 ms

mbl.jpg

mbl.jpg

634 ms

CSHL.jpg

CSHL.jpg

574 ms

evans%20et%20al%202015%20slider.jpg

evans%20et%20al%202015%20slider.jpg

812 ms

owens%20et%20al%202016%20slider.jpg

owens%20et%20al%202016%20slider.jpg

770 ms

veenstra-2015-eomes_2_stage10-5a.jpg

veenstra-2015-eomes_2_stage10-5a.jpg

1210 ms

x%20laevis%20genome%20v8.jpg

x%20laevis%20genome%20v8.jpg

1255 ms

16th%20IXC%20slider.jpg

16th%20IXC%20slider.jpg

1200 ms

BLAST.png

BLAST.png

874 ms

genome_browser.png

genome_browser.png

890 ms

gene_expression.png

gene_expression.png

937 ms

genes.png

genes.png

1005 ms

anatomy_and_development.png

anatomy_and_development.png

1014 ms

reagents_and_protocols.png

reagents_and_protocols.png

1063 ms

literature.png

literature.png

1131 ms

community.png

community.png

1137 ms

FCIS.jpg

FCIS.jpg

1192 ms

chordin.jpg

chordin.jpg

1321 ms

hex-gfp.jpg

hex-gfp.jpg

1387 ms

brachyury.jpg

brachyury.jpg

1381 ms

tunel.jpg

tunel.jpg

1441 ms

myerskrieg2013.jpg

myerskrieg2013.jpg

1396 ms

nkx3-1a.jpg

nkx3-1a.jpg

1433 ms

e-cadherin.jpg

e-cadherin.jpg

1574 ms

eye%20field%20transcription%20factors.jpg

eye%20field%20transcription%20factors.jpg

1566 ms

cranial%20placodes.jpg

cranial%20placodes.jpg

1569 ms

xenopustumor.jpg

xenopustumor.jpg

1581 ms

nichd_logo_med.png

nichd_logo_med.png

1561 ms

linkid.js

linkid.js

20 ms

collect

collect

88 ms

closed.png

closed.png

1348 ms

bg_direction_nav.png

bg_direction_nav.png

1462 ms

close.gif

close.gif

126 ms

loading.gif

loading.gif

127 ms

Accessibility Review

xenbase.org accessibility score

80

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.

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

ARIA IDs are not unique

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

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

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

List items (<li>) are not contained within <ul> or <ol> parent elements.

Best Practices

xenbase.org 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

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

SEO Factors

xenbase.org SEO score

64

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 doesn't use 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 Xenbase.org 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 Xenbase.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

xenbase.org

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