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spaceplace.nasa.gov screenshot

Report Summary

  • 55

    Performance

    Renders faster than
    72% of other websites

  • 90

    Accessibility

    Visual factors better than
    that of 74% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 92

    SEO

    Google-friendlier than
    74% of websites

spaceplace.nasa.gov

Home | NASA Space Place – NASA Science for Kids

Page Load Speed

2.1 sec in total

First Response

166 ms

Resources Loaded

1.7 sec

Page Rendered

262 ms

spaceplace.nasa.gov screenshot

About Website

Welcome to spaceplace.nasa.gov homepage info - get ready to check Space Place NASA best content for United States right away, or after learning these important things about spaceplace.nasa.gov

NASA’s award-winning Space Place website engages upper-elementary-aged children in space and Earth science through interactive games, hands-on activities, fun articles and short videos. With material ...

Visit spaceplace.nasa.gov

Key Findings

We analyzed Spaceplace.nasa.gov page load time and found that the first response time was 166 ms and then it took 1.9 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 40% of websites can load faster.

Performance Metrics

spaceplace.nasa.gov performance score

55

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.3 s

41/100

10%

LCP (Largest Contentful Paint)

Value6.8 s

7/100

25%

SI (Speed Index)

Value4.7 s

69/100

10%

TBT (Total Blocking Time)

Value300 ms

79/100

30%

CLS (Cumulative Layout Shift)

Value0.035

100/100

15%

TTI (Time to Interactive)

Value9.0 s

34/100

10%

Network Requests Diagram

spaceplace.nasa.gov

166 ms

spaceplace.nasa.gov

321 ms

css

44 ms

all-styles.css

141 ms

index.css

207 ms

Our browser made a total of 75 requests to load all elements on the main page. We found that 77% of them (58 requests) were addressed to the original Spaceplace.nasa.gov, 7% (5 requests) were made to Googletagmanager.com and 4% (3 requests) were made to Fonts.gstatic.com. The less responsive or slowest element that took the longest time to load (745 ms) belongs to the original domain Spaceplace.nasa.gov.

Page Optimization Overview & Recommendations

Page size can be reduced by 106.4 kB (6%)

Content Size

1.9 MB

After Optimization

1.8 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Spaceplace.nasa.gov main page is 1.9 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. 65% of websites need less resources to load. Images take 1.7 MB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 30.2 kB

  • Original 37.1 kB
  • After minification 33.3 kB
  • After compression 6.9 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 30.2 kB or 81% of the original size.

Image Optimization

-2%

Potential reduce by 37.1 kB

  • Original 1.7 MB
  • After minification 1.6 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. Space Place NASA images are well optimized though.

JavaScript Optimization

-21%

Potential reduce by 36.0 kB

  • Original 170.6 kB
  • After minification 170.6 kB
  • After compression 134.7 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 36.0 kB or 21% of the original size.

CSS Optimization

-13%

Potential reduce by 3.2 kB

  • Original 24.3 kB
  • After minification 24.3 kB
  • After compression 21.1 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. Spaceplace.nasa.gov needs all CSS files to be minified and compressed as it can save up to 3.2 kB or 13% of the original size.

Requests Breakdown

Number of requests can be reduced by 18 (26%)

Requests Now

69

After Optimization

51

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 69 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Space Place NASA. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 15 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

spaceplace.nasa.gov

spaceplace.nasa.gov

166 ms

spaceplace.nasa.gov

spaceplace.nasa.gov

321 ms

css

css

44 ms

all-styles.css

all-styles.css

141 ms

index.css

index.css

207 ms

slick.css

slick.css

206 ms

slick-theme.css

slick-theme.css

208 ms

modernizr-2.6.2.min-ck.js

modernizr-2.6.2.min-ck.js

209 ms

jquery.min.js

jquery.min.js

40 ms

jquery-ui-1.8.13.custom.min.js

jquery-ui-1.8.13.custom.min.js

239 ms

jquery.beforeafter-1.4.min.js

jquery.beforeafter-1.4.min.js

238 ms

features.js

features.js

274 ms

slick.min.js

slick.min.js

274 ms

script-ck.js

script-ck.js

349 ms

Universal-Federated-Analytics-Min.js

Universal-Federated-Analytics-Min.js

31 ms

js

js

80 ms

p.js

p.js

31 ms

space_background.png

space_background.png

473 ms

gtm.js

gtm.js

36 ms

nasa.png

nasa.png

195 ms

nasa-science-logo-horizontal.png

nasa-science-logo-horizontal.png

197 ms

logo.png

logo.png

195 ms

search-button.png

search-button.png

197 ms

nav_earth.png

nav_earth.png

274 ms

nav_sun.png

nav_sun.png

272 ms

nav_solarsystem.png

nav_solarsystem.png

273 ms

nav_space.png

nav_space.png

272 ms

nav_science.png

nav_science.png

271 ms

nav_educators.png

nav_educators.png

362 ms

valentines175.png

valentines175.png

364 ms

asteroid.jpg

asteroid.jpg

364 ms

sun-corona175.jpg

sun-corona175.jpg

362 ms

skywatching-tips_icon.png

skywatching-tips_icon.png

362 ms

eclipse-snap.gif

eclipse-snap.gif

744 ms

snap-it-eclipse-game.jpg

snap-it-eclipse-game.jpg

476 ms

space-place_art-challenge_banner.png

space-place_art-challenge_banner.png

425 ms

earth-day-2024_alonzo-10.jpg

earth-day-2024_alonzo-10.jpg

476 ms

earth-day-2024_amyra-5.jpg

earth-day-2024_amyra-5.jpg

479 ms

earth-day-2024_aurora-8.jpg

earth-day-2024_aurora-8.jpg

464 ms

earth-day-2024_ava-11.jpg

earth-day-2024_ava-11.jpg

547 ms

earth-day-2024_bella-8.jpg

earth-day-2024_bella-8.jpg

544 ms

earth-day-2024_elladya-9.jpg

earth-day-2024_elladya-9.jpg

612 ms

earth-day-2024_ivy-10.jpg

earth-day-2024_ivy-10.jpg

548 ms

earth-day-2024_josie-11.jpg

earth-day-2024_josie-11.jpg

616 ms

earth-day-2024_kathryn-14.jpg

earth-day-2024_kathryn-14.jpg

605 ms

earth-day-2024_kavinandhan.jpg

earth-day-2024_kavinandhan.jpg

682 ms

earth-day-2024_konrad-4.jpg

earth-day-2024_konrad-4.jpg

616 ms

earth-day-2024_lara.jpg

earth-day-2024_lara.jpg

675 ms

earth-day-2024_luisa-11.jpg

earth-day-2024_luisa-11.jpg

681 ms

earth-day-2024_mara-9.jpg

earth-day-2024_mara-9.jpg

686 ms

earth-day-2024_naisha-7.jpg

earth-day-2024_naisha-7.jpg

687 ms

earth-day-2024_pawel-7.jpg

earth-day-2024_pawel-7.jpg

745 ms

earth-day-2024_ryan.jpg

earth-day-2024_ryan.jpg

729 ms

6xK-dSZaM9iE8KbpRA_LJ3z8mH9BOJvgkBgv58a-xw.ttf

6xK-dSZaM9iE8KbpRA_LJ3z8mH9BOJvgkBgv58a-xw.ttf

30 ms

6xK-dSZaM9iE8KbpRA_LJ3z8mH9BOJvgkP8o58a-xw.ttf

6xK-dSZaM9iE8KbpRA_LJ3z8mH9BOJvgkP8o58a-xw.ttf

92 ms

6xK-dSZaM9iE8KbpRA_LJ3z8mH9BOJvgkKEo58a-xw.ttf

6xK-dSZaM9iE8KbpRA_LJ3z8mH9BOJvgkKEo58a-xw.ttf

163 ms

js

js

200 ms

analytics.js

analytics.js

229 ms

js

js

227 ms

js

js

284 ms

earth-day-2024_suwan-6.jpg

earth-day-2024_suwan-6.jpg

704 ms

171 ms

earth-day-2024_taifur-5.jpg

earth-day-2024_taifur-5.jpg

566 ms

earth-day-2024_varvara-5.jpg

earth-day-2024_varvara-5.jpg

567 ms

icon-games.png

icon-games.png

619 ms

slick.woff

slick.woff

557 ms

icon-crafts.png

icon-crafts.png

555 ms

icon-activities.png

icon-activities.png

557 ms

icon-media.png

icon-media.png

561 ms

icon-books.png

icon-books.png

612 ms

icon-mystery.png

icon-mystery.png

585 ms

ajax-loader.gif

ajax-loader.gif

531 ms

collect

collect

57 ms

collect

collect

54 ms

collect

collect

24 ms

Accessibility Review

spaceplace.nasa.gov accessibility score

90

Accessibility Issues

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

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

Best Practices

spaceplace.nasa.gov best practices score

75

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

SEO Factors

spaceplace.nasa.gov SEO score

92

Search Engine Optimization Advices

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

Links are not crawlable

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

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 Spaceplace.nasa.gov 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 Spaceplace.nasa.gov 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

spaceplace.nasa.gov

Open Graph description is not detected on the main page of Space Place NASA. 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: