Tools & Wizards About Us
astronomy.sierracollege.edu screenshot

Report Summary

  • 100

    Performance

    Renders faster than
    97% of other websites

  • 95

    Accessibility

    Visual factors better than
    that of 87% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    81% of websites

  • 73

    SEO

    Google-friendlier than
    31% of websites

astronomy.sierracollege.edu

Sierra College Astronomy Home Page

Page Load Speed

2.6 sec in total

First Response

966 ms

Resources Loaded

1.4 sec

Page Rendered

190 ms

astronomy.sierracollege.edu screenshot

About Website

Welcome to astronomy.sierracollege.edu homepage info - get ready to check Astronomy Sierra College best content for United States right away, or after learning these important things about astronomy.sierracollege.edu

The Sierra College Astronomy Department is dedicated to the teaching of introductory astronomy to students of varied ages and backgrounds. Instruction is based on a balanced combination of classroom p...

Visit astronomy.sierracollege.edu

Key Findings

We analyzed Astronomy.sierracollege.edu page load time and found that the first response time was 966 ms and then it took 1.6 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

astronomy.sierracollege.edu performance score

100

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.1 s

99/100

10%

LCP (Largest Contentful Paint)

Value1.1 s

100/100

25%

SI (Speed Index)

Value1.7 s

100/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value1.1 s

100/100

10%

Network Requests Diagram

astronomy.sierracollege.edu

966 ms

starsbg.jpg

447 ms

american_flag_anim.gif

469 ms

StarsCloud.jpg

455 ms

Our browser made a total of 4 requests to load all elements on the main page. We found that all of those requests were addressed to Astronomy.sierracollege.edu and no external sources were called. The less responsive or slowest element that took the longest time to load (966 ms) belongs to the original domain Astronomy.sierracollege.edu.

Page Optimization Overview & Recommendations

Page size can be reduced by 11.3 kB (23%)

Content Size

49.5 kB

After Optimization

38.2 kB

  • HTML
  • Images

In fact, the total size of Astronomy.sierracollege.edu main page is 49.5 kB. This result falls within a vast category (top 1 000 000) of heavyweight, probably not optimized, and thus slow loading web pages. Only 5% of websites need less resources to load. Images take 39.8 kB which makes up the majority of the site volume.

HTML Optimization

-76%

Potential reduce by 7.4 kB

  • Original 9.7 kB
  • After minification 8.1 kB
  • After compression 2.3 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. This page needs HTML code to be minified as it can gain 1.6 kB, which is 17% 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 7.4 kB or 76% of the original size.

Image Optimization

-10%

Potential reduce by 3.9 kB

  • Original 39.8 kB
  • After minification 35.9 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. Astronomy Sierra College images are well optimized though.

Requests Breakdown

We found no issues to fix!

Requests Now

3

After Optimization

3

  • Images

The browser has sent 3 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Astronomy Sierra College. According to our analytics all requests are already optimized.

Network Requests Diagram

astronomy.sierracollege.edu

astronomy.sierracollege.edu

966 ms

starsbg.jpg

starsbg.jpg

447 ms

american_flag_anim.gif

american_flag_anim.gif

469 ms

StarsCloud.jpg

StarsCloud.jpg

455 ms

Accessibility Review

astronomy.sierracollege.edu accessibility score

95

Accessibility Issues

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

Best Practices

astronomy.sierracollege.edu 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

SEO Factors

astronomy.sierracollege.edu SEO score

73

Search Engine Optimization Advices

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    EN

  • Encoding

    WINDOWS-1252

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Astronomy.sierracollege.edu 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 Astronomy.sierracollege.edu main page’s claimed encoding is windows-1252. 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

astronomy.sierracollege.edu

Open Graph description is not detected on the main page of Astronomy Sierra College. 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: