Tools & Wizards About Us
keckobservatory.org screenshot

Report Summary

  • 48

    Performance

    Renders faster than
    66% of other websites

  • 83

    Accessibility

    Visual factors better than
    that of 54% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 76

    SEO

    Google-friendlier than
    35% of websites

keckobservatory.org

W. M. Keck Observatory

Page Load Speed

3 sec in total

First Response

175 ms

Resources Loaded

1.4 sec

Page Rendered

1.5 sec

keckobservatory.org screenshot

About Website

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

Visit keckobservatory.org

Key Findings

We analyzed Keckobservatory.org page load time and found that the first response time was 175 ms and then it took 2.8 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

keckobservatory.org performance score

48

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.1 s

20/100

10%

LCP (Largest Contentful Paint)

Value16.8 s

0/100

25%

SI (Speed Index)

Value5.8 s

50/100

10%

TBT (Total Blocking Time)

Value220 ms

87/100

30%

CLS (Cumulative Layout Shift)

Value0.129

82/100

15%

TTI (Time to Interactive)

Value10.1 s

26/100

10%

Network Requests Diagram

www.keckobservatory.org

175 ms

style.min.css

41 ms

style.min.css

62 ms

style.min.css

64 ms

style.min.css

64 ms

Our browser made a total of 57 requests to load all elements on the main page. We found that 84% of them (48 requests) were addressed to the original Keckobservatory.org, 4% (2 requests) were made to Use.fontawesome.com and 4% (2 requests) were made to Fonts.googleapis.com. The less responsive or slowest element that took the longest time to load (437 ms) belongs to the original domain Keckobservatory.org.

Page Optimization Overview & Recommendations

Page size can be reduced by 562.1 kB (8%)

Content Size

6.7 MB

After Optimization

6.2 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Keckobservatory.org main page is 6.7 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. 60% of websites need less resources to load. Images take 6.3 MB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 113.9 kB

  • Original 139.1 kB
  • After minification 135.6 kB
  • After compression 25.2 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 113.9 kB or 82% of the original size.

Image Optimization

-7%

Potential reduce by 445.4 kB

  • Original 6.3 MB
  • After minification 5.9 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. Keck Observatory images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 492 B

  • Original 119.2 kB
  • After minification 119.2 kB
  • After compression 118.7 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

-2%

Potential reduce by 2.2 kB

  • Original 127.3 kB
  • After minification 126.7 kB
  • After compression 125.1 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. Keckobservatory.org has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 34 (65%)

Requests Now

52

After Optimization

18

  • Images
  • JavaScript
  • CSS

The browser has sent 52 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Keck Observatory. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 13 to 1 for JavaScripts and from 23 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

www.keckobservatory.org

www.keckobservatory.org

175 ms

style.min.css

style.min.css

41 ms

style.min.css

style.min.css

62 ms

style.min.css

style.min.css

64 ms

style.min.css

style.min.css

64 ms

cv.css

cv.css

72 ms

cvpro.min.css

cvpro.min.css

89 ms

variables-skeleton.min.css

variables-skeleton.min.css

65 ms

variables-full.min.css

variables-full.min.css

80 ms

rsvp-v1.min.css

rsvp-v1.min.css

87 ms

dashicons.min.css

dashicons.min.css

106 ms

common-skeleton.min.css

common-skeleton.min.css

86 ms

common-full.min.css

common-full.min.css

90 ms

tickets.min.css

tickets.min.css

99 ms

form-themes.css

form-themes.css

91 ms

style.css

style.css

93 ms

style.css

style.css

93 ms

slick.css

slick.css

95 ms

slick-theme.css

slick-theme.css

102 ms

all.css

all.css

49 ms

rsvp.min.css

rsvp.min.css

110 ms

v4-shims.css

v4-shims.css

64 ms

jquery.min.js

jquery.min.js

137 ms

jquery-migrate.min.js

jquery-migrate.min.js

119 ms

slick.min.js

slick.min.js

119 ms

js

js

64 ms

view.min.js

view.min.js

120 ms

css

css

39 ms

css

css

62 ms

rsvp.min.js

rsvp.min.js

119 ms

ticket-details.min.js

ticket-details.min.js

128 ms

cv.js

cv.js

168 ms

cvpro.min.js

cvpro.min.js

169 ms

scripts.js

scripts.js

168 ms

forms.js

forms.js

169 ms

wp-polyfill-importmap.min.js

wp-polyfill-importmap.min.js

23 ms

491382280

491382280

338 ms

blue-slanted-vector.png

blue-slanted-vector.png

48 ms

keck-logo-1.png

keck-logo-1.png

47 ms

starry-sky-with-two-people-flipped-scaled.jpg

starry-sky-with-two-people-flipped-scaled.jpg

145 ms

20140402_ARH-5412-1.jpg

20140402_ARH-5412-1.jpg

132 ms

Keck-Andrew-Hara-14-1-scaled.jpg

Keck-Andrew-Hara-14-1-scaled.jpg

233 ms

koa.png

koa.png

46 ms

BD-black-holes-version-5_00304-1-scaled.jpg

BD-black-holes-version-5_00304-1-scaled.jpg

125 ms

El-Badry_Kareem-NeutronStarB.2e16d0ba.fill-1600x810-c100.jpg

El-Badry_Kareem-NeutronStarB.2e16d0ba.fill-1600x810-c100.jpg

157 ms

decouple_still_version1-scaled.jpg

decouple_still_version1-scaled.jpg

134 ms

Andrea-Ghez-scaled-e1717101409152.jpg

Andrea-Ghez-scaled-e1717101409152.jpg

146 ms

58756896_10156360151693247_6855662961499832320_n-1.png

58756896_10156360151693247_6855662961499832320_n-1.png

263 ms

W12_KDL_6383-1.png

W12_KDL_6383-1.png

156 ms

Akamai-2007-1-1-scaled.jpg

Akamai-2007-1-1-scaled.jpg

270 ms

298025003_10159098848653247_2356814288063393456_n-1.png

298025003_10159098848653247_2356814288063393456_n-1.png

192 ms

37634307006_db91bc023b_k-2.png

37634307006_db91bc023b_k-2.png

437 ms

keck-white-1.png

keck-white-1.png

194 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsjZ0B4gaVc.ttf

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsjZ0B4gaVc.ttf

35 ms

SourceSans3-VariableFont_wght.ttf

SourceSans3-VariableFont_wght.ttf

310 ms

6xK3dSBYKcSV-LCoeQqfX1RYOo3qOK7g.ttf

6xK3dSBYKcSV-LCoeQqfX1RYOo3qOK7g.ttf

45 ms

api.js

api.js

13 ms

Accessibility Review

keckobservatory.org accessibility score

83

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.

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

<frame> or <iframe> elements do not have a title

High

Image elements do not have [alt] attributes

High

Form elements do not have associated labels

High

Links do not have a discernible name

Best Practices

keckobservatory.org 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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

SEO Factors

keckobservatory.org SEO score

76

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

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 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 Keckobservatory.org 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 Keckobservatory.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

keckobservatory.org

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