Tools & Wizards About Us
hubblesite.org screenshot

Report Summary

  • 0

    Performance

  • 0

    Accessibility

  • 0

    Best Practices

  • 0

    SEO

hubblesite.org

Hubble Home

Page Load Speed

2.5 sec in total

First Response

16 ms

Resources Loaded

1.5 sec

Page Rendered

1 sec

hubblesite.org screenshot

About Website

Click here to check amazing Hubble Site content for United States. Otherwise, check out these important facts you probably never knew about hubblesite.org

Embark on a journey of discovery with the Hubble Space Telescope.

Visit hubblesite.org

Key Findings

We analyzed Hubblesite.org page load time and found that the first response time was 16 ms and then it took 2.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.

Performance Metrics

hubblesite.org performance score

0

Network Requests Diagram

hubblesite.org

16 ms

hubblesite.org

27 ms

video-js.min.css

80 ms

hubble-override-81c2d76b2f.css

20 ms

app-41604b7b61d688797b12.js

75 ms

Our browser made a total of 90 requests to load all elements on the main page. We found that 91% of them (82 requests) were addressed to the original Hubblesite.org, 2% (2 requests) were made to Vjs.zencdn.net and 2% (2 requests) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (703 ms) belongs to the original domain Hubblesite.org.

Page Optimization Overview & Recommendations

Page size can be reduced by 986.0 kB (14%)

Content Size

7.1 MB

After Optimization

6.1 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Hubblesite.org main page is 7.1 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. Only a small number of websites need less resources to load. Images take 5.6 MB which makes up the majority of the site volume.

HTML Optimization

-71%

Potential reduce by 321.8 kB

  • Original 450.6 kB
  • After minification 443.3 kB
  • After compression 128.7 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 321.8 kB or 71% of the original size.

Image Optimization

-4%

Potential reduce by 240.6 kB

  • Original 5.6 MB
  • After minification 5.4 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. Hubble Site images are well optimized though.

JavaScript Optimization

-45%

Potential reduce by 422.4 kB

  • Original 932.9 kB
  • After minification 932.9 kB
  • After compression 510.5 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 422.4 kB or 45% of the original size.

CSS Optimization

-1%

Potential reduce by 1.1 kB

  • Original 114.0 kB
  • After minification 114.0 kB
  • After compression 112.9 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. Hubblesite.org has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 17 (25%)

Requests Now

67

After Optimization

50

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 67 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Hubble Site. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 14 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

hubblesite.org

hubblesite.org

16 ms

hubblesite.org

hubblesite.org

27 ms

video-js.min.css

video-js.min.css

80 ms

hubble-override-81c2d76b2f.css

hubble-override-81c2d76b2f.css

20 ms

app-41604b7b61d688797b12.js

app-41604b7b61d688797b12.js

75 ms

initJahiaContext.js

initJahiaContext.js

19 ms

2a467e2bd9112ad9c6d5b6b44d8671dc.min.css

2a467e2bd9112ad9c6d5b6b44d8671dc.min.css

73 ms

538b5d66b981c639f5eea3b13d13cf.min.js

538b5d66b981c639f5eea3b13d13cf.min.js

73 ms

api.js

api.js

132 ms

video.min.js

video.min.js

130 ms

fonts.css

fonts.css

12 ms

p.css

p.css

124 ms

gtm.js

gtm.js

242 ms

recaptcha__en.js

recaptcha__en.js

236 ms

hs-logo-nasa.png

hs-logo-nasa.png

122 ms

HeroVideo2_Still%20Image_Final.png

HeroVideo2_Still%20Image_Final.png

219 ms

bubble.jpg

bubble.jpg

221 ms

hs-images-hubble-side12x12.jpg

hs-images-hubble-side12x12.jpg

219 ms

ajax-loader.gif

ajax-loader.gif

219 ms

spiral.jpg

spiral.jpg

224 ms

videos-img.jpg

videos-img.jpg

389 ms

STL-announcement-webb-1200x600.jpg

STL-announcement-webb-1200x600.jpg

390 ms

STScI-H-05-May-constellations-2400x1200.jpg

STScI-H-05-May-constellations-2400x1200.jpg

389 ms

STSCI-H-p2016-slideshow-2400x1200.png

STSCI-H-p2016-slideshow-2400x1200.png

222 ms

STScI-H-p1610a-slideshow-2400x1200.jpg

STScI-H-p1610a-slideshow-2400x1200.jpg

391 ms

STScI-H-p1915-slideshow-2400x1200.jpg

STScI-H-p1915-slideshow-2400x1200.jpg

396 ms

STSCI-H-p1812d-slideshow-2400x1200.jpg

STSCI-H-p1812d-slideshow-2400x1200.jpg

397 ms

STSCI-H-p1821a-slideshow-2400x1200.jpg

STSCI-H-p1821a-slideshow-2400x1200.jpg

399 ms

STScI-H-p1601a-slideshow-2400x1200.jpg

STScI-H-p1601a-slideshow-2400x1200.jpg

399 ms

STSCI-H-p1829b-slideshow-2400x1200.jpg

STSCI-H-p1829b-slideshow-2400x1200.jpg

393 ms

STSCI-H-p1733a-slideshow-2400x1200.jpg

STSCI-H-p1733a-slideshow-2400x1200.jpg

392 ms

STL-announcement-webb-1200x600.jpg

STL-announcement-webb-1200x600.jpg

394 ms

cats-eye12x12.jpg

cats-eye12x12.jpg

562 ms

hs-cfa0822-2400x1200.jpg

hs-cfa0822-2400x1200.jpg

397 ms

hs-s109-e5628-2400x1200.jpg

hs-s109-e5628-2400x1200.jpg

563 ms

hs-0928b-2400x1200.jpg

hs-0928b-2400x1200.jpg

402 ms

hs-1108a-2400x1200.jpg

hs-1108a-2400x1200.jpg

398 ms

hs-1210a-2400x1200.jpg

hs-1210a-2400x1200.jpg

563 ms

stsci-logo.svg

stsci-logo.svg

399 ms

poppins-v5-latin-900.woff

poppins-v5-latin-900.woff

470 ms

poppins-v5-latin-700.woff

poppins-v5-latin-700.woff

472 ms

poppins-v5-latin-regular.woff

poppins-v5-latin-regular.woff

470 ms

poppins-v5-latin-300.woff

poppins-v5-latin-300.woff

471 ms

overpass-regular-webfont.woff

overpass-regular-webfont.woff

538 ms

overpass-thin-webfont.woff

overpass-thin-webfont.woff

536 ms

overpass-bold-webfont.woff

overpass-bold-webfont.woff

535 ms

merriweather-v19-latin-regular.woff

merriweather-v19-latin-regular.woff

472 ms

merriweather-v19-latin-300.woff

merriweather-v19-latin-300.woff

476 ms

merriweather-v19-latin-700.woff

merriweather-v19-latin-700.woff

475 ms

oswald-regular.ttf

oswald-regular.ttf

473 ms

oswald-medium.ttf

oswald-medium.ttf

525 ms

oswald-bold.ttf

oswald-bold.ttf

414 ms

overpass-italic-webfont.woff

overpass-italic-webfont.woff

556 ms

overpass-thin-italic-webfont.woff

overpass-thin-italic-webfont.woff

471 ms

overpass-bold-italic-webfont.woff

overpass-bold-italic-webfont.woff

469 ms

akrobat-regular-webfont.woff

akrobat-regular-webfont.woff

514 ms

akrobat-semibold-webfont.woff

akrobat-semibold-webfont.woff

506 ms

akrobat-bold-webfont.woff

akrobat-bold-webfont.woff

388 ms

akrobat-extrabold-webfont.woff

akrobat-extrabold-webfont.woff

478 ms

rajdhani-semibold-webfont.woff

rajdhani-semibold-webfont.woff

477 ms

9-41604b7b61d688797b12.js

9-41604b7b61d688797b12.js

344 ms

1-41604b7b61d688797b12.js

1-41604b7b61d688797b12.js

344 ms

0-41604b7b61d688797b12.js

0-41604b7b61d688797b12.js

380 ms

3-41604b7b61d688797b12.js

3-41604b7b61d688797b12.js

379 ms

2-41604b7b61d688797b12.js

2-41604b7b61d688797b12.js

383 ms

hs-logo-nasa.png

hs-logo-nasa.png

380 ms

HeroVideo2_Still%20Image_Final.png

HeroVideo2_Still%20Image_Final.png

703 ms

hs-images-hubble-side12x12.jpg

hs-images-hubble-side12x12.jpg

379 ms

spiral.jpg

spiral.jpg

465 ms

videos-img.jpg

videos-img.jpg

377 ms

STL-announcement-webb-1200x600.jpg

STL-announcement-webb-1200x600.jpg

690 ms

hubble-79d67493b9.svg

hubble-79d67493b9.svg

356 ms

STScI-H-05-May-constellations-2400x1200.jpg

STScI-H-05-May-constellations-2400x1200.jpg

303 ms

STSCI-H-p2016-slideshow-2400x1200.png

STSCI-H-p2016-slideshow-2400x1200.png

304 ms

STScI-H-p1610a-slideshow-2400x1200.jpg

STScI-H-p1610a-slideshow-2400x1200.jpg

306 ms

STScI-H-p1915-slideshow-2400x1200.jpg

STScI-H-p1915-slideshow-2400x1200.jpg

304 ms

STSCI-H-p1812d-slideshow-2400x1200.jpg

STSCI-H-p1812d-slideshow-2400x1200.jpg

302 ms

STSCI-H-p1821a-slideshow-2400x1200.jpg

STSCI-H-p1821a-slideshow-2400x1200.jpg

302 ms

STScI-H-p1601a-slideshow-2400x1200.jpg

STScI-H-p1601a-slideshow-2400x1200.jpg

304 ms

STSCI-H-p1829b-slideshow-2400x1200.jpg

STSCI-H-p1829b-slideshow-2400x1200.jpg

304 ms

STSCI-H-p1733a-slideshow-2400x1200.jpg

STSCI-H-p1733a-slideshow-2400x1200.jpg

300 ms

cats-eye12x12.jpg

cats-eye12x12.jpg

521 ms

hs-cfa0822-2400x1200.jpg

hs-cfa0822-2400x1200.jpg

244 ms

hs-s109-e5628-2400x1200.jpg

hs-s109-e5628-2400x1200.jpg

472 ms

hs-0928b-2400x1200.jpg

hs-0928b-2400x1200.jpg

473 ms

hs-1108a-2400x1200.jpg

hs-1108a-2400x1200.jpg

473 ms

hs-1210a-2400x1200.jpg

hs-1210a-2400x1200.jpg

473 ms

js

js

95 ms

analytics.js

analytics.js

91 ms

stsci-logo.svg

stsci-logo.svg

406 ms

SEO Factors

hubblesite.org SEO score

0

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 Hubblesite.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 Hubblesite.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

hubblesite.org

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