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Top Technologies

Google Font API
Font Scripts
WordPress
CMS
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CDN
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Font Awesome
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Google Tag Manager
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Apache
Web Servers
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Web Frameworks

92 nasa.gov Last Updated: 3 months

Success 55% of passed verification steps
Warning 30% of total warning
Errors 15% of total errors, require fast action

Desktop

Mobile

Performance Desktop Score 23%
Best Practices Desktop Score 86%
SEO Desktop Score 83%
Progressive Web App Desktop Score 26%
Performance Mobile Score 6%
Best Practices Mobile Score 86%
SEO Mobile Score 83%
Progressive Web App Mobile Score 29%
Page Authority Authority 73%
Domain Authority Domain Authority 94%
Moz Rank 7.3/10
Bounce Rate Rate 0%
charset Encoding
Great, language/character encoding is specified: UTF-8
Title Tag 4 Characters
NASA
Meta Description 179 Characters
NASA.gov brings you the latest news, images and videos from America's space agency, pioneering the future in space exploration, scientific discovery and aeronautics research.
Effective URL 20 Characters
https://www.nasa.gov
Google Preview Your look like this in google search result
NASA
https://www.nasa.gov
NASA.gov brings you the latest news, images and videos from America's space agency, pioneering the future in space exploration, scientific discov
Robots.txt File Detected
Sitemap.xml File Detected
Whois Is a query and response protocol that is widely used for querying databases that store the registered users or assignees of an Internet resource, such as a domain name, an IP address block, or an autonomous system
Updated: 1970-01-01 / 51 years
Create on: 1970-01-01 / 51 years
Expires on: 1970-01-01 / 619 months 28 days
Page Size Code & Text Ratio
Document Size: ~10.79 KB
Code Size: ~4.67 KB
Text Size: ~6.12 KB Ratio: 56.68%

Social Data

Delicious Total: 0
Facebook Total: 501,818
Google Total: 0
Linkedin Total: 0
Pinterest Total: 158
Stumbleupon Total: 0
Tumblr Total: 0
Vk Total: 0

Estimation Traffic and Earnings

49,094
Unique Visits
Daily
90,823
Pages Views
Daily
$87
Income
Daily
1,374,632
Unique Visits
Monthly
2,588,456
Pages Views
Monthly
$2,175
Income
Monthly
15,906,456
Unique Visits
Yearly
30,516,528
Pages Views
Yearly
$22,968
Income
Yearly

Technologies

PWA - Manifest

Manifest is not valid
Your site don't have valid manifest.json, read more in Web App Manifest

Desktop

Desktop Screenshot
Serve images in next-gen formats Potential savings of 747 KiB
Image formats like JPEG 2000, JPEG XR, and WebP often provide better compression than PNG or JPEG, which means faster downloads and less data consumption
First Meaningful Paint 3.7 s
First Meaningful Paint measures when the primary content of a page is visible
Remove unused JavaScript Potential savings of 1,585 KiB
Remove unused JavaScript to reduce bytes consumed by network activity
Avoid enormous network payloads Total size was 5,453 KiB
Large network payloads cost users real money and are highly correlated with long load times
Network Round Trip Times 0 ms
Network round trip times (RTT) have a large impact on performance. If the RTT to an origin is high, it's an indication that servers closer to the user could improve performance
Minimize main-thread work 2.1 s
Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this
First CPU Idle 4.7 s
First CPU Idle marks the first time at which the page's main thread is quiet enough to handle input. [Learn more](https://web.dev/first-cpu-idle/).
Total Blocking Time 380 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds
Max Potential First Input Delay 370 ms
The maximum potential First Input Delay that your users could experience is the duration of the longest task
Serve static assets with an efficient cache policy 39 resources found
A long cache lifetime can speed up repeat visits to your page
Use video formats for animated content Potential savings of 658 KiB
Large GIFs are inefficient for delivering animated content. Consider using MPEG4/WebM videos for animations and PNG/WebP for static images instead of GIF to save network bytes
Avoid large layout shifts 5 elements found
These DOM elements contribute most to the CLS of the page.
Initial server response time was short Root document took 140 ms
Keep the server response time for the main document short because all other requests depend on it
Time to Interactive 5.1 s
Time to interactive is the amount of time it takes for the page to become fully interactive
Avoid serving legacy JavaScript to modern browsers Potential savings of 11 KiB
Polyfills and transforms enable legacy browsers to use new JavaScript features. However, many aren't necessary for modern browsers. For your bundled JavaScript, adopt a modern script deployment strategy using module/nomodule feature detection to reduce the amount of code shipped to modern browsers, while retaining support for legacy browsers
Includes front-end JavaScript libraries with known security vulnerabilities 2 vulnerabilities detected
Some third-party scripts may contain known security vulnerabilities that are easily identified and exploited by attackers
Keep request counts low and transfer sizes small 80 requests • 5,453 KiB
To set budgets for the quantity and size of page resources, add a budget.json file
Eliminate render-blocking resources Potential savings of 3,050 ms
Resources are blocking the first paint of your page. Consider delivering critical JS/CSS inline and deferring all non-critical JS/styles
Replace unnecessarily large JavaScript libraries 1 large library found
Large JavaScript libraries can lead to poor performance. Prefer smaller, functionally equivalent libraries to reduce your bundle size
First Contentful Paint 3.7 s
First Contentful Paint marks the time at which the first text or image is painted
User Timing marks and measures 1 user timing
Consider instrumenting your app with the User Timing API to measure your app's real-world performance during key user experiences
Remove unused CSS Potential savings of 404 KiB
Remove dead rules from stylesheets and defer the loading of CSS not used for above-the-fold content to reduce unnecessary bytes consumed by network activity
Avoids an excessive DOM size 286 elements
A large DOM will increase memory usage, cause longer [style calculations](https://developers.google.com/web/fundamentals/performance/rendering/reduce-the-scope-and-complexity-of-style-calculations), and produce costly [layout reflows](https://developers.google.com/speed/articles/reflow)
Largest Contentful Paint element 1 element found
This is the largest contentful element painted within the viewport
Avoid long main-thread tasks 9 long tasks found
Lists the longest tasks on the main thread, useful for identifying worst contributors to input delay
Server Backend Latencies 0 ms
Server latencies can impact web performance. If the server latency of an origin is high, it's an indication the server is overloaded or has poor backend performance
Minimize third-party usage Third-party code blocked the main thread for 70 ms
Third-party code can significantly impact load performance. Limit the number of redundant third-party providers and try to load third-party code after your page has primarily finished loading
Reduce JavaScript execution time 1.4 s
Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this
Cumulative Layout Shift 0.251
Cumulative Layout Shift measures the movement of visible elements within the viewport
Speed Index 3.7 s
Speed Index shows how quickly the contents of a page are visibly populated
Page load is not fast enough on mobile networks Interactive on simulated mobile network at 26.0 s
A fast page load over a cellular network ensures a good mobile user experience
Avoid chaining critical requests 15 chains found
The Critical Request Chains below show you what resources are loaded with a high priority. Consider reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load
Efficiently encode images Potential savings of 194 KiB
Optimized images load faster and consume less cellular data
Estimated Input Latency 110 ms
Estimated Input Latency is an estimate of how long your app takes to respond to user input, in milliseconds, during the busiest 5s window of page load. If your latency is higher than 50 ms, users may perceive your app as laggy
Largest Contentful Paint 7.1 s
Largest Contentful Paint marks the time at which the largest text or image is painted
Minify CSS Potential savings of 80 KiB
Minifying CSS files can reduce network payload sizes
Enable text compression Potential savings of 2,267 KiB
Text-based resources should be served with compression (gzip, deflate or brotli) to minimize total network bytes

Mobile

Mobile Screenshot
Document uses legible font sizes 100% legible text
Font sizes less than 12px are too small to be legible and require mobile visitors to “pinch to zoom” in order to read. Strive to have >60% of page text ≥12px
Avoid enormous network payloads Total size was 4,448 KiB
Large network payloads cost users real money and are highly correlated with long load times
Avoid long main-thread tasks 14 long tasks found
Lists the longest tasks on the main thread, useful for identifying worst contributors to input delay
Minimize main-thread work 5.5 s
Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this
Tap targets are not sized appropriately 74% appropriately sized tap targets
Interactive elements like buttons and links should be large enough (48x48px), and have enough space around them, to be easy enough to tap without overlapping onto other elements
Enable text compression Potential savings of 2,267 KiB
Text-based resources should be served with compression (gzip, deflate or brotli) to minimize total network bytes
Estimated Input Latency 500 ms
Estimated Input Latency is an estimate of how long your app takes to respond to user input, in milliseconds, during the busiest 5s window of page load. If your latency is higher than 50 ms, users may perceive your app as laggy
Reduce the impact of third-party code Third-party code blocked the main thread for 340 ms
Third-party code can significantly impact load performance. Limit the number of redundant third-party providers and try to load third-party code after your page has primarily finished loading
Avoid chaining critical requests 15 chains found
The Critical Request Chains below show you what resources are loaded with a high priority. Consider reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load
Network Round Trip Times 0 ms
Network round trip times (RTT) have a large impact on performance. If the RTT to an origin is high, it's an indication that servers closer to the user could improve performance
Keep request counts low and transfer sizes small 77 requests • 4,448 KiB
To set budgets for the quantity and size of page resources, add a budget.json file
Serve static assets with an efficient cache policy 36 resources found
A long cache lifetime can speed up repeat visits to your page
Initial server response time was short Root document took 40 ms
Keep the server response time for the main document short because all other requests depend on it
Minify CSS Potential savings of 80 KiB
Minifying CSS files can reduce network payload sizes
Includes front-end JavaScript libraries with known security vulnerabilities 2 vulnerabilities detected
Some third-party scripts may contain known security vulnerabilities that are easily identified and exploited by attackers
Remove unused CSS Potential savings of 409 KiB
Remove dead rules from stylesheets and defer the loading of CSS not used for above-the-fold content to reduce unnecessary bytes consumed by network activity
Largest Contentful Paint 24.8 s
Largest Contentful Paint marks the time at which the largest text or image is painted
First Contentful Paint 18.5 s
First Contentful Paint marks the time at which the first text or image is painted
First Contentful Paint (3G) 40381 ms
First Contentful Paint 3G marks the time at which the first text or image is painted while on a 3G network
Server Backend Latencies 0 ms
Server latencies can impact web performance. If the server latency of an origin is high, it's an indication the server is overloaded or has poor backend performance
Page load is not fast enough on mobile networks Interactive at 24.0 s
A fast page load over a cellular network ensures a good mobile user experience
Eliminate render-blocking resources Potential savings of 16,380 ms
Resources are blocking the first paint of your page. Consider delivering critical JS/CSS inline and deferring all non-critical JS/styles
Max Potential First Input Delay 1,110 ms
The maximum potential First Input Delay that your users could experience is the duration of the longest task
Remove unused JavaScript Potential savings of 1,585 KiB
Remove unused JavaScript to reduce bytes consumed by network activity
User Timing marks and measures 1 user timing
Consider instrumenting your app with the User Timing API to measure your app's real-world performance during key user experiences
Use video formats for animated content Potential savings of 266 KiB
Large GIFs are inefficient for delivering animated content. Consider using MPEG4/WebM videos for animations and PNG/WebP for static images instead of GIF to save network bytes
Speed Index 18.5 s
Speed Index shows how quickly the contents of a page are visibly populated
Largest Contentful Paint element 1 element found
This is the largest contentful element painted within the viewport
Total Blocking Time 1,810 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds
Avoid serving legacy JavaScript to modern browsers Potential savings of 11 KiB
Polyfills and transforms enable legacy browsers to use new JavaScript features. However, many aren't necessary for modern browsers. For your bundled JavaScript, adopt a modern script deployment strategy using module/nomodule feature detection to reduce the amount of code shipped to modern browsers, while retaining support for legacy browsers
First CPU Idle 18.9 s
First CPU Idle marks the first time at which the page's main thread is quiet enough to handle input. [Learn more](https://web.dev/first-cpu-idle/).
Time to Interactive 24.0 s
Time to interactive is the amount of time it takes for the page to become fully interactive
Avoid large layout shifts 3 elements found
These DOM elements contribute most to the CLS of the page.
Reduce JavaScript execution time 3.9 s
Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this
Efficiently encode images Potential savings of 160 KiB
Optimized images load faster and consume less cellular data
Serve images in next-gen formats Potential savings of 370 KiB
Image formats like JPEG 2000, JPEG XR, and WebP often provide better compression than PNG or JPEG, which means faster downloads and less data consumption
Avoids an excessive DOM size 286 elements
A large DOM will increase memory usage, cause longer [style calculations](https://developers.google.com/web/fundamentals/performance/rendering/reduce-the-scope-and-complexity-of-style-calculations), and produce costly [layout reflows](https://developers.google.com/speed/articles/reflow)
Replace unnecessarily large JavaScript libraries 1 large library found
Large JavaScript libraries can lead to poor performance. Prefer smaller, functionally equivalent libraries to reduce your bundle size
First Meaningful Paint 18.9 s
First Meaningful Paint measures when the primary content of a page is visible

Speed And Optimization Tips

Website speed has a huge impact on performance, affecting user experience, conversion rates and even rankings. ‪‬‬By reducing page load-times, users are less likely to get distracted and the search engines are more likely to reward you by ranking you
Title Website
Warning! Your title is not optimized
Description Website
Warning! Your description is not optimized
Robots.txt
Congratulations! Your site have a robots.txt file
Sitemap.xml
Congratulations! We've found a sitemap file for your website
SSL Secure
Congratulations! Your site have Support to HTTPS
Headings
Warning! Your page not contain any H1 and H2 headings. H1 and H2 headings help indicate the important topics of your page to search engines
Blacklist
Congratulations! Your site is not listed in a blacklist
W3C Validator
Warning! Your site have errors W3C
Accelerated Mobile Pages (AMP)
Warning! Your site not have AMP Version
Domain Authority
Congratulations! Your Domain Authority is good
GZIP Compress
Warning! Your site not is compressed, this can make slower response for the visitors
Favicon
Congratulations! Your website appears to have a favicon.
Broken Links
Congratulations! You not have broken links View links

Alexa Rank

1,472

Global Rank

710

United States
Traffic
Search

Information Server

Response Header HTTP headers carry information about the client browser, the requested page and the server
HTTP/2 200 
content-type: text/html
content-length: 11047
x-amz-id-2: xjxYSXeCJ6p3Alj3MGeQwrKnA27tsfPTrphsxYB9DWiWp2WvlqGn6m7VQfu+2a4vY3gvtYZ5+f4=
x-amz-request-id: 32CF8BC51E87B9E5
x-amz-replication-status: COMPLETED
last-modified: Fri, 11 Sep 2020 12:37:15 GMT
x-amz-meta-md5_hash: 4e58c0b6c5ee52962edbdfa21038347a
x-amz-version-id: jBGACucOUTLuKVl7g2U4w8hB4qerewiW
accept-ranges: bytes
server: AmazonS3
x-ua-compatible: IE=edge,chrome=1
date: Mon, 14 Sep 2020 10:47:11 GMT
etag: "4e58c0b6c5ee52962edbdfa21038347a"
cache-control: max-age=300
referrer-policy: strict-origin
x-content-type-options: nosniff
strict-transport-security: max-age=31557600; includeSubdomains; preload
content-security-policy: frame-ancestors 'self' https://*.nasa.gov
x-cache: Hit from cloudfront
via: 1.1 f67188cca541e8788c38e9eb35529bea.cloudfront.net (CloudFront)
x-amz-cf-pop: YTO50-C3
x-amz-cf-id: DyiANLN_JSJUdqWPMm8e-RtCDCIXc8hF543ItZdXreDtDaPKaoyuUg==
DNS Records DNS Resource Records associated with a hostname
View DNS Records

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