Tools & Wizards About Us
roguephysicist.com screenshot

Report Summary

  • 61

    Performance

    Renders faster than
    76% of other websites

  • 50

    Accessibility

    Visual factors better than
    that of 21% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 58

    SEO

    Google-friendlier than
    21% of websites

roguephysicist.com

Rogue Physicist - resources for physics education, © 2006-2015 Dorian Pascoe

Page Load Speed

4.2 sec in total

First Response

347 ms

Resources Loaded

3.5 sec

Page Rendered

336 ms

roguephysicist.com screenshot

About Website

Welcome to roguephysicist.com homepage info - get ready to check Rogue Physicist best content right away, or after learning these important things about roguephysicist.com

Rogue Physicist, resources for physics education, © 2006-2015 Dorian Pascoe. Resource bank, computer simulations, worksheets, documents, videos and more.

Visit roguephysicist.com

Key Findings

We analyzed Roguephysicist.com page load time and found that the first response time was 347 ms and then it took 3.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 65% of websites can load faster.

Performance Metrics

roguephysicist.com performance score

61

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.1 s

9/100

10%

LCP (Largest Contentful Paint)

Value5.8 s

15/100

25%

SI (Speed Index)

Value6.0 s

46/100

10%

TBT (Total Blocking Time)

Value70 ms

99/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value5.9 s

66/100

10%

Network Requests Diagram

roguephysicist.com

347 ms

js

58 ms

css

36 ms

rogu1011.css

336 ms

drinking-bird-logo-small-cropped.gif

354 ms

Our browser made a total of 46 requests to load all elements on the main page. We found that 93% of them (43 requests) were addressed to the original Roguephysicist.com, 2% (1 request) were made to Googletagmanager.com and 2% (1 request) were made to Fonts.googleapis.com. The less responsive or slowest element that took the longest time to load (2.4 sec) belongs to the original domain Roguephysicist.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 98.8 kB (11%)

Content Size

908.3 kB

After Optimization

809.5 kB

  • HTML
  • Images
  • CSS

In fact, the total size of Roguephysicist.com main page is 908.3 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. 25% of websites need less resources to load. Images take 850.3 kB which makes up the majority of the site volume.

HTML Optimization

-87%

Potential reduce by 43.5 kB

  • Original 50.2 kB
  • After minification 47.5 kB
  • After compression 6.7 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 43.5 kB or 87% of the original size.

Image Optimization

-6%

Potential reduce by 52.8 kB

  • Original 850.3 kB
  • After minification 797.6 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. Rogue Physicist images are well optimized though.

CSS Optimization

-33%

Potential reduce by 2.6 kB

  • Original 7.7 kB
  • After minification 7.7 kB
  • After compression 5.2 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. Roguephysicist.com needs all CSS files to be minified and compressed as it can save up to 2.6 kB or 33% of the original size.

Requests Breakdown

Number of requests can be reduced by 17 (39%)

Requests Now

44

After Optimization

27

  • Images
  • JavaScript
  • CSS

The browser has sent 44 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Rogue Physicist. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests and as a result speed up the page load time.

Network Requests Diagram

roguephysicist.com

roguephysicist.com

347 ms

js

js

58 ms

css

css

36 ms

rogu1011.css

rogu1011.css

336 ms

drinking-bird-logo-small-cropped.gif

drinking-bird-logo-small-cropped.gif

354 ms

youtube_logo4.png

youtube_logo4.png

422 ms

twitter_logo_small_black.jpg

twitter_logo_small_black.jpg

333 ms

facebook_logo_small.jpg

facebook_logo_small.jpg

353 ms

rogue_physicist_logo_new3_small_bold.gif

rogue_physicist_logo_new3_small_bold.gif

353 ms

bg9abstract_glowing_background_vector_illustration_267297.jpg

bg9abstract_glowing_background_vector_illustration_267297.jpg

441 ms

index.htm_cmp_Studio010_hbtn.gif

index.htm_cmp_Studio010_hbtn.gif

322 ms

index.htm_cmp_Studio010_hbtn.gif

index.htm_cmp_Studio010_hbtn.gif

321 ms

recommended_reading.htm_cmp_Studio010_hbtn.gif

recommended_reading.htm_cmp_Studio010_hbtn.gif

325 ms

things_to_watch.htm_cmp_Studio010_hbtn.gif

things_to_watch.htm_cmp_Studio010_hbtn.gif

328 ms

display_materials.htm_cmp_Studio010_hbtn.gif

display_materials.htm_cmp_Studio010_hbtn.gif

405 ms

interesting_links.htm_cmp_Studio010_hbtn.gif

interesting_links.htm_cmp_Studio010_hbtn.gif

633 ms

high_altitude_balloon.htm_cmp_Studio010_hbtn.gif

high_altitude_balloon.htm_cmp_Studio010_hbtn.gif

638 ms

licensing.htm_cmp_Studio010_hbtn.gif

licensing.htm_cmp_Studio010_hbtn.gif

642 ms

about_me.htm_cmp_Studio010_hbtn.gif

about_me.htm_cmp_Studio010_hbtn.gif

640 ms

java_logo_small.png

java_logo_small.png

804 ms

html5-logo_small.png

html5-logo_small.png

757 ms

Flash_8_logo.png

Flash_8_logo.png

1035 ms

phet_logo_black_small_cropped_redced.png

phet_logo_black_small_cropped_redced.png

955 ms

nebraska_astronomy_applets_thumbnail_3_cropped.jpg

nebraska_astronomy_applets_thumbnail_3_cropped.jpg

954 ms

walter_fednt_javaphys_logo.gif

walter_fednt_javaphys_logo.gif

955 ms

newton's_cannon_small_wikipedia.jpg

newton's_cannon_small_wikipedia.jpg

1085 ms

Superman_lifting_truck_thumbnail.png

Superman_lifting_truck_thumbnail.png

1273 ms

thinking-cap_real_thumbnail.jpg

thinking-cap_real_thumbnail.jpg

1283 ms

videos_reel.png

videos_reel.png

1434 ms

stack%20of%20books%20thumbnail.png

stack%20of%20books%20thumbnail.png

1436 ms

posters_thumbnail.jpg

posters_thumbnail.jpg

1441 ms

33000m%20above%20%20Pembrokeshire_lores.JPG

33000m%20above%20%20Pembrokeshire_lores.JPG

1603 ms

laptop_small_wiki.png

laptop_small_wiki.png

1721 ms

me%20with%20board%20longyearbreen.JPG

me%20with%20board%20longyearbreen.JPG

1957 ms

phet_logo_white_small.png

phet_logo_white_small.png

1760 ms

html5-logo_small_cropped.png

html5-logo_small_cropped.png

1749 ms

index.htm_cmp_Studio010_hbtn_a.gif

index.htm_cmp_Studio010_hbtn_a.gif

2078 ms

snfys0Gs98ln43n0d-14ULoToe6LZxea.woff

snfys0Gs98ln43n0d-14ULoToe6LZxea.woff

42 ms

index.htm_cmp_Studio010_hbtn_a.gif

index.htm_cmp_Studio010_hbtn_a.gif

2078 ms

recommended_reading.htm_cmp_Studio010_hbtn_a.gif

recommended_reading.htm_cmp_Studio010_hbtn_a.gif

2081 ms

things_to_watch.htm_cmp_Studio010_hbtn_a.gif

things_to_watch.htm_cmp_Studio010_hbtn_a.gif

2057 ms

display_materials.htm_cmp_Studio010_hbtn_a.gif

display_materials.htm_cmp_Studio010_hbtn_a.gif

2060 ms

interesting_links.htm_cmp_Studio010_hbtn_a.gif

interesting_links.htm_cmp_Studio010_hbtn_a.gif

2265 ms

high_altitude_balloon.htm_cmp_Studio010_hbtn_a.gif

high_altitude_balloon.htm_cmp_Studio010_hbtn_a.gif

2401 ms

licensing.htm_cmp_Studio010_hbtn_a.gif

licensing.htm_cmp_Studio010_hbtn_a.gif

2379 ms

about_me.htm_cmp_Studio010_hbtn_a.gif

about_me.htm_cmp_Studio010_hbtn_a.gif

2324 ms

Accessibility Review

roguephysicist.com accessibility score

50

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

roguephysicist.com best practices score

67

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

Displays images with incorrect aspect ratio

High

Serves images with low resolution

SEO Factors

roguephysicist.com SEO score

58

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

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    N/A

  • Encoding

    WINDOWS-1252

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Roguephysicist.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 Roguephysicist.com 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

roguephysicist.com

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