Report Summary

  • 56

    Performance

    Renders faster than
    73% of other websites

  • 95

    Accessibility

    Visual factors better than
    that of 87% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    81% of websites

  • 92

    SEO

    Google-friendlier than
    75% of websites

software.nasa.gov

Home | NASA Software Catalog

Page Load Speed

3.4 sec in total

First Response

220 ms

Resources Loaded

2.9 sec

Page Rendered

266 ms

software.nasa.gov screenshot

About Website

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

Visit software.nasa.gov

Key Findings

We analyzed Software.nasa.gov page load time and found that the first response time was 220 ms and then it took 3.2 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

software.nasa.gov performance score

56

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.3 s

41/100

10%

LCP (Largest Contentful Paint)

Value4.8 s

30/100

25%

SI (Speed Index)

Value3.3 s

91/100

10%

TBT (Total Blocking Time)

Value210 ms

89/100

30%

CLS (Cumulative Layout Shift)

Value0.573

12/100

15%

TTI (Time to Interactive)

Value5.7 s

68/100

10%

Network Requests Diagram

software.nasa.gov

220 ms

software.nasa.gov

382 ms

federatedanalytics.all.min.js

144 ms

jquery-1.11.1.min.js

578 ms

portal.js

453 ms

Our browser made a total of 44 requests to load all elements on the main page. We found that 95% of them (42 requests) were addressed to the original Software.nasa.gov, 5% (2 requests) were made to Ssl.google-analytics.com. The less responsive or slowest element that took the longest time to load (1.6 sec) belongs to the original domain Software.nasa.gov.

Page Optimization Overview & Recommendations

Page size can be reduced by 428.2 kB (13%)

Content Size

3.2 MB

After Optimization

2.8 MB

In fact, the total size of Software.nasa.gov main page is 3.2 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. 35% of websites need less resources to load. Images take 3.0 MB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 17.3 kB

  • Original 21.6 kB
  • After minification 16.0 kB
  • After compression 4.3 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. This page needs HTML code to be minified as it can gain 5.5 kB, which is 26% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 17.3 kB or 80% of the original size.

Image Optimization

-10%

Potential reduce by 290.0 kB

  • Original 3.0 MB
  • After minification 2.7 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. Software NASA images are well optimized though.

JavaScript Optimization

-59%

Potential reduce by 89.5 kB

  • Original 151.1 kB
  • After minification 150.7 kB
  • After compression 61.6 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 89.5 kB or 59% of the original size.

CSS Optimization

-83%

Potential reduce by 31.5 kB

  • Original 38.1 kB
  • After minification 28.2 kB
  • After compression 6.6 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. Software.nasa.gov needs all CSS files to be minified and compressed as it can save up to 31.5 kB or 83% of the original size.

Requests Breakdown

Number of requests can be reduced by 4 (10%)

Requests Now

42

After Optimization

38

The browser has sent 42 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Software 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 5 to 1 for JavaScripts and as a result speed up the page load time.

Accessibility Review

software.nasa.gov accessibility score

95

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

Links do not have a discernible name

Best Practices

software.nasa.gov best practices score

92

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

SEO Factors

software.nasa.gov SEO score

92

Search Engine Optimization Advices

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

    ISO-8859-1

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Software.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 Software.nasa.gov main page’s claimed encoding is iso-8859-1. 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

Open Graph description is not detected on the main page of Software 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: