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Top Technologies

Google Font API
Font Scripts
WordPress
CMS
CloudFlare
CDN
Nginx
Web Servers
Font Awesome
Font Scripts
Google Tag Manager
Tag Managers
Apache
Web Servers
LiteSpeed
Web Servers

92 nasa.gov Last Updated: 2 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 30%
Best Practices Desktop Score 100%
SEO Desktop Score 83%
PWA Desktop Score 25%
Performance Mobile Score 9%
Best Practices Mobile Score 100%
SEO Mobile Score 83%
PWA Mobile Score 33%
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 / 54 years
Create on: 1970-01-01 / 54 years
Expires on: 1970-01-01 / 654 months 6 days
Page Size Code & Text Ratio
Document Size: ~9.09 KB
Code Size: ~4.81 KB
Text Size: ~4.28 KB Ratio: 47.10%

Social Data

Estimation Traffic and Earnings

8
Unique Visits
Daily
14
Pages Views
Daily
$0
Income
Daily
224
Unique Visits
Monthly
399
Pages Views
Monthly
$0
Income
Monthly
2,592
Unique Visits
Yearly
4,704
Pages Views
Yearly
$0
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 static assets with an efficient cache policy 31 resources found
A long cache lifetime can speed up repeat visits to your page
Largest Contentful Paint 7.2 s
Largest Contentful Paint marks the time at which the largest text or image is painted
Reduce unused JavaScript Potential savings of 4,508 KiB
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity
Cumulative Layout Shift 0.52
Cumulative Layout Shift measures the movement of visible elements within the viewport
Avoids an excessive DOM size 304 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)
Enable text compression Potential savings of 4,838 KiB
Text-based resources should be served with compression (gzip, deflate or brotli) to minimize total network bytes
Reduce unused CSS Potential savings of 435 KiB
Reduce unused rules from stylesheets and defer CSS not used for above-the-fold content to decrease bytes consumed by network activity
Speed Index 6.2 s
Speed Index shows how quickly the contents of a page are visibly populated
Minify CSS Potential savings of 93 KiB
Minifying CSS files can reduce network payload sizes
Eliminate render-blocking resources Potential savings of 5,790 ms
Resources are blocking the first paint of your page. Consider delivering critical JS/CSS inline and deferring all non-critical JS/styles
Avoid long main-thread tasks 5 long tasks found
Lists the longest tasks on the main thread, useful for identifying worst contributors to input delay
Keep request counts low and transfer sizes small 61 requests • 7,659 KiB
To set budgets for the quantity and size of page resources, add a budget.json file
Network Round Trip Times 20 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
Serve images in next-gen formats Potential savings of 421 KiB
Image formats like WebP and AVIF often provide better compression than PNG or JPEG, which means faster downloads and less data consumption
First Meaningful Paint 6.2 s
First Meaningful Paint measures when the primary content of a page is visible
Largest Contentful Paint element 7,220 ms
This is the largest contentful element painted within the viewport
Avoid chaining critical requests 16 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
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
Minimize third-party usage Third-party code blocked the main thread for 0 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
Server Backend Latencies 50 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
Avoid enormous network payloads Total size was 7,659 KiB
Large network payloads cost users real money and are highly correlated with long load times
Time to Interactive 6.7 s
Time to Interactive is the amount of time it takes for the page to become fully interactive
JavaScript execution time 0.7 s
Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this
Web app manifest or service worker do not meet the installability requirements 1 reason
Service worker is the technology that enables your app to use many Progressive Web App features, such as offline, add to homescreen, and push notifications. With proper service worker and manifest implementations, browsers can proactively prompt users to add your app to their homescreen, which can lead to higher engagement
Max Potential First Input Delay 170 ms
The maximum potential First Input Delay that your users could experience is the duration of the longest task
Avoid large layout shifts 5 elements found
These DOM elements contribute most to the CLS of the page
Efficiently encode images Potential savings of 85 KiB
Optimized images load faster and consume less cellular data
Minimizes main-thread work 1.1 s
Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this
Avoid serving legacy JavaScript to modern browsers Potential savings of 36 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 Contentful Paint 6.2 s
First Contentful Paint marks the time at which the first text or image is painted
Total Blocking Time 180 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds

Mobile

Mobile Screenshot
Serve static assets with an efficient cache policy 32 resources found
A long cache lifetime can speed up repeat visits to your page
Max Potential First Input Delay 530 ms
The maximum potential First Input Delay that your users could experience is the duration of the longest task
Largest Contentful Paint 39.2 s
Largest Contentful Paint marks the time at which the largest text or image is painted
Minimize main-thread work 5.3 s
Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this
Initial server response time was short Root document took 30 ms
Keep the server response time for the main document short because all other requests depend on it
Keep request counts low and transfer sizes small 62 requests • 7,600 KiB
To set budgets for the quantity and size of page resources, add a budget.json file
Largest Contentful Paint element 39,220 ms
This is the largest contentful element painted within the viewport
Avoids an excessive DOM size 304 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)
Web app manifest or service worker do not meet the installability requirements 1 reason
Service worker is the technology that enables your app to use many Progressive Web App features, such as offline, add to homescreen, and push notifications. With proper service worker and manifest implementations, browsers can proactively prompt users to add your app to their homescreen, which can lead to higher engagement
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
Avoid serving legacy JavaScript to modern browsers Potential savings of 36 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
Eliminate render-blocking resources Potential savings of 35,340 ms
Resources are blocking the first paint of your page. Consider delivering critical JS/CSS inline and deferring all non-critical JS/styles
Speed Index 36.4 s
Speed Index shows how quickly the contents of a page are visibly populated
Cumulative Layout Shift 0.883
Cumulative Layout Shift measures the movement of visible elements within the viewport
Server Backend Latencies 90 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
Time to Interactive 39.5 s
Time to Interactive is the amount of time it takes for the page to become fully interactive
Serve images in next-gen formats Potential savings of 405 KiB
Image formats like WebP and AVIF often provide better compression than PNG or JPEG, which means faster downloads and less data consumption
First Contentful Paint 36.4 s
First Contentful Paint marks the time at which the first text or image is painted
Avoid long main-thread tasks 13 long tasks found
Lists the longest tasks on the main thread, useful for identifying worst contributors to input delay
Reduce unused JavaScript Potential savings of 4,508 KiB
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity
Minify CSS Potential savings of 93 KiB
Minifying CSS files can reduce network payload sizes
Total Blocking Time 1,030 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds
Enable text compression Potential savings of 4,838 KiB
Text-based resources should be served with compression (gzip, deflate or brotli) to minimize total network bytes
Network Round Trip Times 20 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
Avoid enormous network payloads Total size was 7,600 KiB
Large network payloads cost users real money and are highly correlated with long load times
Avoid large layout shifts 4 elements found
These DOM elements contribute most to the CLS of the page
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
Reduce unused CSS Potential savings of 485 KiB
Reduce unused rules from stylesheets and defer CSS not used for above-the-fold content to decrease bytes consumed by network activity
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
Tap targets are not sized appropriately 70% appropriately sized tap targets
Interactive elements like buttons and links should be large enough (48x48px), or have enough space around them, to be easy enough to tap without overlapping onto other elements
Efficiently encode images Potential savings of 98 KiB
Optimized images load faster and consume less cellular data
First Meaningful Paint 36.7 s
First Meaningful Paint measures when the primary content of a page is visible
Avoid chaining critical requests 16 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
Defer offscreen images Potential savings of 15 KiB
Consider lazy-loading offscreen and hidden images after all critical resources have finished loading to lower time to interactive

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

99,999,999

Global Rank

99,999,999

-
Traffic
Search

Domain Available

Domain (TDL) and Typo Status
nasa.co Available Buy Now!
nasa.us Available Buy Now!
nasa.com Available Buy Now!
nasa.org Available Buy Now!
nasa.net Available Buy Now!
nsa.gov Available Buy Now!
hasa.gov Available Buy Now!
uasa.gov Available Buy Now!

Information Server

Response Header HTTP headers carry information about the client browser, the requested page and the server
HTTP/1.1 200 OK
Content-Type: text/html
Content-Length: 9313
Connection: keep-alive
x-amz-id-2: yO1ke6Y+wVfQrHh2LRbRPwdtN+wgb/zoB7QOBNmXi2/y6tg+0lTHaD1XSkRhXQlevONTLhvC+5U=
x-amz-request-id: Z88KJNF2SW4WW3KM
x-amz-replication-status: PENDING
Last-Modified: Wed, 19 Jul 2023 16:53:45 GMT
x-amz-server-side-encryption: AES256
x-amz-meta-md5_hash: f31aab49ed44ab81526b978622e78458
x-amz-version-id: zwU2rukW2gD8Lf8vxW_6vOZ55M7Odiv6
Accept-Ranges: bytes
Server: AmazonS3
X-UA-Compatible: IE=edge,chrome=1
Date: Thu, 20 Jul 2023 00:06:13 GMT
Cache-Control: max-age=300
ETag: "f31aab49ed44ab81526b978622e78458"
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 312f8b716ad43246758aa8031a8e0342.cloudfront.net (CloudFront)
X-Amz-Cf-Pop: IAD55-P5
X-Amz-Cf-Id: xNC9flYPtjZwhYJuZdLlghvj-Y9YPoadrZCt8NxNmn7eWrbqzwNaEg==
Age: 282
DNS Records DNS Resource Records associated with a hostname
View DNS Records

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