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About Website

Click here to check amazing Fraknoi content. Otherwise, check out these important facts you probably never knew about fraknoi.com

This is the home page of the website of astronomer and educator Andrew Fraknoi. The site includes information about his books, articles, classes, astronomy lectures, radio appearances, and work with s...

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name

value

score

weighting

FCP (First Contentful Paint)

Value2.9 s

51/100

10%

LCP (Largest Contentful Paint)

Value6.8 s

7/100

25%

SI (Speed Index)

Value6.7 s

36/100

10%

TBT (Total Blocking Time)

Value1,380 ms

16/100

30%

CLS (Cumulative Layout Shift)

Value0.331

34/100

15%

TTI (Time to Interactive)

Value10.5 s

23/100

10%

www.fraknoi.com

230 ms

js

149 ms

style.min.css

27 ms

v4-shims.min.css

38 ms

all.min.css

55 ms

Our browser made a total of 39 requests to load all elements on the main page. We found that 54% of them (21 requests) were addressed to the original Fraknoi.com, 21% (8 requests) were made to Fonts.gstatic.com and 10% (4 requests) were made to Google.com. The less responsive or slowest element that took the longest time to load (452 ms) relates to the external source Fonts.gstatic.com.

Content Size

803.8 kB

After Optimization

716.4 kB

In fact, the total size of Fraknoi.com main page is 803.8 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. 70% of websites need less resources to load. Javascripts take 347.6 kB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 86.2 kB

Original 107.7 kB
After minification 104.4 kB
After compression 21.5 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 86.2 kB or 80% of the original size.

Image Optimization

-0%

Potential reduce by 0 B

Original 225.8 kB
After minification 225.8 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. Fraknoi images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 1.2 kB

Original 347.6 kB
After minification 347.6 kB
After compression 346.4 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. This website has mostly compressed JavaScripts.

CSS Optimization

-0%

Potential reduce by 0 B

Original 122.7 kB
After minification 122.7 kB
After compression 122.7 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. Fraknoi.com has all CSS files already compressed.

Requests Now

After Optimization

The browser has sent 26 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Fraknoi. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 9 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.

Accessibility Issues

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.

High

Links do not have a discernible name

These items highlight common accessibility best practices.

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Areas of Improvement

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

Low

Detected JavaScript libraries

Search Engine Optimization Advices

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/).

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 Fraknoi.com 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 Fraknoi.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

fraknoi.com

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

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Performance

Accessibility

Best Practices

SEO

Home - Andrew Fraknoi - Astronomy Lectures - Astronomy Education Resources

Page Load Speed

First Response

Resources Loaded

Page Rendered

About Website

Key Findings

Performance Metrics

Measured Metrics

FCP (First Contentful Paint)

LCP (Largest Contentful Paint)

SI (Speed Index)

TBT (Total Blocking Time)

CLS (Cumulative Layout Shift)

TTI (Time to Interactive)