Tools & Wizards About Us
sciencecenter.net screenshot

Report Summary

  • 100

    Performance

    Renders faster than
    97% of other websites

  • 54

    Accessibility

    Visual factors better than
    that of 23% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    19% of websites

  • 67

    SEO

    Google-friendlier than
    25% of websites

sciencecenter.net

Hutech Astronomical Products

Page Load Speed

22.2 sec in total

First Response

931 ms

Resources Loaded

20.6 sec

Page Rendered

647 ms

sciencecenter.net screenshot

About Website

Welcome to sciencecenter.net homepage info - get ready to check Sciencecenter best content for United States right away, or after learning these important things about sciencecenter.net

Hutech Astronomical Products

Visit sciencecenter.net

Key Findings

We analyzed Sciencecenter.net page load time and found that the first response time was 931 ms and then it took 21.2 sec to load all DOM resources and completely render a web page. This is a poor result, as 95% of websites can load faster. Unfortunately, there was 1 request timeout, which can generally increase the web page load time, as the browser stays idle while waiting for website response.

Performance Metrics

sciencecenter.net performance score

100

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.3 s

98/100

10%

LCP (Largest Contentful Paint)

Value1.4 s

100/100

25%

SI (Speed Index)

Value1.3 s

100/100

10%

TBT (Total Blocking Time)

Value10 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.057

98/100

15%

TTI (Time to Interactive)

Value1.4 s

100/100

10%

Network Requests Diagram

sciencecenter.net

931 ms

bkgnd2.gif

264 ms

null.gif

268 ms

null.gif

34 ms

aitoff-s.jpg

101 ms

Our browser made a total of 13 requests to load all elements on the main page. We found that 92% of them (12 requests) were addressed to the original Sciencecenter.net, 8% (1 request) were made to Tycho.usno.navy.mil. The less responsive or slowest element that took the longest time to load (19.8 sec) relates to the external source Tycho.usno.navy.mil.

Page Optimization Overview & Recommendations

Page size can be reduced by 17.4 kB (87%)

Content Size

20.0 kB

After Optimization

2.6 kB

  • HTML

In fact, the total size of Sciencecenter.net main page is 20.0 kB. This result falls within the top 5000 of lightweight and thus fast loading web pages. Only a small number of websites need less resources to load. HTML takes 20.0 kB which makes up the majority of the site volume.

HTML Optimization

-87%

Potential reduce by 17.4 kB

  • Original 20.0 kB
  • After minification 10.3 kB
  • After compression 2.6 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. This page needs HTML code to be minified as it can gain 9.7 kB, which is 48% 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 17.4 kB or 87% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

0

After Optimization

0

Besides the initial HTML request, no CSS, Javascripts, AJAX or image files were requested in the course of web page rendering.

Network Requests Diagram

sciencecenter.net

sciencecenter.net

931 ms

bkgnd2.gif

bkgnd2.gif

264 ms

null.gif

null.gif

268 ms

null.gif

null.gif

34 ms

aitoff-s.jpg

aitoff-s.jpg

101 ms

eclipse.jpg

eclipse.jpg

100 ms

cover3.jpg

cover3.jpg

223 ms

phase.gif

phase.gif

19814 ms

specials.jpg

specials.jpg

130 ms

gdot.gif

gdot.gif

127 ms

gdot.gif

gdot.gif

24 ms

null.gif

null.gif

22 ms

newton.jpg

newton.jpg

25 ms

Accessibility Review

sciencecenter.net accessibility score

54

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.

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

Best Practices

sciencecenter.net best practices score

58

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

High

Browser errors were logged to the console

High

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

sciencecenter.net SEO score

67

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

Image elements do not have [alt] attributes

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    N/A

  • Encoding

    N/A

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Sciencecenter.net 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 Sciencecenter.net main page’s claimed encoding is . Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

sciencecenter.net

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