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deepimpact.jpl.nasa.gov screenshot

Report Summary

  • 10

    Performance

    Renders faster than
    23% of other websites

  • 82

    Accessibility

    Visual factors better than
    that of 54% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 79

    SEO

    Google-friendlier than
    40% of websites

deepimpact.jpl.nasa.gov

In Depth | Deep Impact (EPOXI) – NASA Solar System Exploration

Page Load Speed

6.6 sec in total

First Response

254 ms

Resources Loaded

2.7 sec

Page Rendered

3.6 sec

deepimpact.jpl.nasa.gov screenshot

About Website

Welcome to deepimpact.jpl.nasa.gov homepage info - get ready to check Deep Impact Jpl NASA best content for United States right away, or after learning these important things about deepimpact.jpl.nasa.gov

NASA’s real-time science encyclopedia of deep space exploration. Our scientists and far-ranging robots explore the wild frontiers of our solar system.

Visit deepimpact.jpl.nasa.gov

Key Findings

We analyzed Deepimpact.jpl.nasa.gov page load time and found that the first response time was 254 ms and then it took 6.3 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.

Performance Metrics

deepimpact.jpl.nasa.gov performance score

10

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value8.4 s

0/100

10%

LCP (Largest Contentful Paint)

Value14.3 s

0/100

25%

SI (Speed Index)

Value13.5 s

2/100

10%

TBT (Total Blocking Time)

Value8,890 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.196

63/100

15%

TTI (Time to Interactive)

Value18.9 s

3/100

10%

Network Requests Diagram

deepimpact.jpl.nasa.gov

254 ms

139 ms

1646 ms

gtm.js

48 ms

css

235 ms

Our browser made a total of 38 requests to load all elements on the main page. We found that 3% of them (1 request) were addressed to the original Deepimpact.jpl.nasa.gov, 66% (25 requests) were made to Solarsystem.nasa.gov and 11% (4 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (1.6 sec) relates to the external source Solarsystem.nasa.gov.

Page Optimization Overview & Recommendations

Page size can be reduced by 96.7 kB (11%)

Content Size

886.9 kB

After Optimization

790.2 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Deepimpact.jpl.nasa.gov main page is 886.9 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. 55% of websites need less resources to load. Images take 533.1 kB which makes up the majority of the site volume.

HTML Optimization

-74%

Potential reduce by 86.3 kB

  • Original 115.9 kB
  • After minification 115.4 kB
  • After compression 29.6 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 86.3 kB or 74% of the original size.

Image Optimization

-2%

Potential reduce by 8.6 kB

  • Original 533.1 kB
  • After minification 524.5 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. Deep Impact Jpl NASA images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 251 B

  • Original 72.1 kB
  • After minification 72.1 kB
  • After compression 71.9 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

-1%

Potential reduce by 1.5 kB

  • Original 165.8 kB
  • After minification 165.8 kB
  • After compression 164.3 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. Deepimpact.jpl.nasa.gov has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 14 (45%)

Requests Now

31

After Optimization

17

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 31 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Deep Impact Jpl 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 10 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

deepimpact.jpl.nasa.gov

deepimpact.jpl.nasa.gov

254 ms

139 ms

1646 ms

gtm.js

gtm.js

48 ms

css

css

235 ms

public_manifest-1469757d464fd267559cf18479719e4614a39f4f51ebeeadb4edac10b94d11fe.css

public_manifest-1469757d464fd267559cf18479719e4614a39f4f51ebeeadb4edac10b94d11fe.css

111 ms

jquery.fancybox3-d5d81bdfc05a59e4ea72bca1d8b7fcc399bd3b61f7c06af95a8a48795df69d7a.css

jquery.fancybox3-d5d81bdfc05a59e4ea72bca1d8b7fcc399bd3b61f7c06af95a8a48795df69d7a.css

46 ms

jquery.fancybox-thumbs-63891ea3fd7b7f15621befe5cbdf329cd554b2129f7d69a7ea8d7cedb4c98323.css

jquery.fancybox-thumbs-63891ea3fd7b7f15621befe5cbdf329cd554b2129f7d69a7ea8d7cedb4c98323.css

69 ms

public_manifest-2157f9531afc5049db097ffd39138b6dac5d9af3ff4a9c458f23872e907cbf83.js

public_manifest-2157f9531afc5049db097ffd39138b6dac5d9af3ff4a9c458f23872e907cbf83.js

233 ms

jquery.fancybox3-bd543a29719f5c70e897670b5484b67824cc3c8eba68c8e4719d3cd6e2a5f542.js

jquery.fancybox3-bd543a29719f5c70e897670b5484b67824cc3c8eba68c8e4719d3cd6e2a5f542.js

69 ms

jquery.fancybox-thumbs3-165b9822252e6816da53602b68cdd1a366475c528a9276488772c4849fed264f.js

jquery.fancybox-thumbs3-165b9822252e6816da53602b68cdd1a366475c528a9276488772c4849fed264f.js

226 ms

mb_manifest-d47afa37977428b18fe8ac3c567cca75e542ae9210447c2483b9d5e90a3ece07.js

mb_manifest-d47afa37977428b18fe8ac3c567cca75e542ae9210447c2483b9d5e90a3ece07.js

227 ms

moment-0f515265fe44caec21b3dd009365d237724d8d1f03b529c96706cba0349eaca4.js

moment-0f515265fe44caec21b3dd009365d237724d8d1f03b529c96706cba0349eaca4.js

227 ms

moment-precise-range-f8f5e2d885c27f8711dafc5ffa7787f995ec126b3da94b60d812d471509471a3.js

moment-precise-range-f8f5e2d885c27f8711dafc5ffa7787f995ec126b3da94b60d812d471509471a3.js

228 ms

Universal-Federated-Analytics-Min.js

Universal-Federated-Analytics-Min.js

257 ms

css2

css2

106 ms

print-8f8fee6fd062f161b3d761c1d1f16d49d7f6b94fc5c4450adeb3fcf015497a76.css

print-8f8fee6fd062f161b3d761c1d1f16d49d7f6b94fc5c4450adeb3fcf015497a76.css

107 ms

logo_nasa_trio@2x.png

logo_nasa_trio@2x.png

48 ms

logo_nasa_trio_black@2x.png

logo_nasa_trio_black@2x.png

47 ms

878_deep_impact.jpg

878_deep_impact.jpg

413 ms

715_First_Luna_320.jpg

715_First_Luna_320.jpg

244 ms

285_ssc2008-10b1_320.jpg

285_ssc2008-10b1_320.jpg

245 ms

2314_PIA23155_320.jpg

2314_PIA23155_320.jpg

243 ms

overlay-arrow.png

overlay-arrow.png

47 ms

loading_320x240.png

loading_320x240.png

48 ms

Metropolis-Regular.otf

Metropolis-Regular.otf

45 ms

Metropolis-Medium.otf

Metropolis-Medium.otf

45 ms

Metropolis-SemiBold.otf

Metropolis-SemiBold.otf

45 ms

Metropolis-Bold.otf

Metropolis-Bold.otf

46 ms

footer_bg.jpg

footer_bg.jpg

27 ms

analytics.js

analytics.js

46 ms

collect

collect

44 ms

collect

collect

62 ms

collect

collect

54 ms

collect

collect

65 ms

collect

collect

49 ms

collect

collect

67 ms

nr-spa-1216.min.js

nr-spa-1216.min.js

41 ms

Accessibility Review

deepimpact.jpl.nasa.gov accessibility score

82

Accessibility Issues

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

[aria-hidden="true"] elements contain focusable descendents

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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

Best Practices

deepimpact.jpl.nasa.gov best practices score

83

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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Missing source maps for large first-party JavaScript

SEO Factors

deepimpact.jpl.nasa.gov SEO score

79

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

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

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

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Deepimpact.jpl.nasa.gov 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 Deepimpact.jpl.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

deepimpact.jpl.nasa.gov

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