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92 nasa.gov Last Updated: 1 year

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

Mobile

Performance Desktop Score 24%
Best Practices Desktop Score 85%
SEO Desktop Score 100%
Progressive Web App Desktop Score 27%
Performance Mobile Score 0%
Best Practices Mobile Score 85%
SEO Mobile Score 97%
Progressive Web App Mobile Score 26%
Page Authority Authority 72%
Domain Authority Domain Authority 94%
Moz Rank 7.2/10
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
http://nasa.gov/robots.txt
Sitemap.xml File Detected
http://nasa.gov/sitemap.xml
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 23 days
Page Size Code & Text Ratio
Document Size: ~10.32 KB
Code Size: ~4.67 KB
Text Size: ~5.64 KB Ratio: 54.70%

Estimation Traffic and Earnings

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Technologies

PWA - Manifest

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

Desktop

Desktop Screenshot
Server response times are low (TTFB) Root document took 40 ms
Time To First Byte identifies the time at which your server sends a response
Eliminate render-blocking resources Potential savings of 3,250 ms
Resources are blocking the first paint of your page. Consider delivering critical JS/CSS inline and deferring all non-critical JS/styles
Enable text compression Potential savings of 2,930 KB
Text-based resources should be served with compression (gzip, deflate or brotli) to minimize total network bytes
Efficiently encode images Potential savings of 104 KB
Optimized images load faster and consume less cellular data
Minimize third-party usage Third-party code blocked the main thread for 10 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
Total Blocking Time 310 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds.
Reduce JavaScript execution time 1.3 s
Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this
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
Speed Index 3.9 s
Speed Index shows how quickly the contents of a page are visibly populated
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).
Avoid enormous network payloads Total size was 5,038 KB
Large network payloads cost users real money and are highly correlated with long load times
Minimize main-thread work 2.4 s
Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this
First Contentful Paint 3.9 s
First Contentful Paint marks the time at which the first text or image is painted
Includes front-end JavaScript libraries with known security vulnerabilities 9 vulnerabilities detected
Some third-party scripts may contain known security vulnerabilities that are easily identified and exploited by attackers
Avoid chaining critical requests 12 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
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)
First Meaningful Paint 3.9 s
First Meaningful Paint measures when the primary content of a page is visible
Keep request counts low and transfer sizes small 140 requests • 5,038 KB
To set budgets for the quantity and size of page resources, add a budget.json file
Serve static assets with an efficient cache policy 37 resources found
A long cache lifetime can speed up repeat visits to your page
Max Potential First Input Delay 270 ms
The maximum potential First Input Delay that your users could experience is the duration, in milliseconds, of the longest task
Time to Interactive 4.9 s
Time to interactive is the amount of time it takes for the page to become fully interactive
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
Page load is not fast enough on mobile networks Interactive on simulated mobile network at 30.3 s
A fast page load over a cellular network ensures a good mobile user experience
Estimated Input Latency 40 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
Minify CSS Potential savings of 94 KB
Minifying CSS files can reduce network payload sizes
Remove unused CSS Potential savings of 395 KB
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
Serve images in next-gen formats Potential savings of 134 KB
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
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

Mobile

Mobile Screenshot
Serve static assets with an efficient cache policy 36 resources found
A long cache lifetime can speed up repeat visits to your page
Max Potential First Input Delay 880 ms
The maximum potential First Input Delay that your users could experience is the duration, in milliseconds, of the longest task
Time to Interactive 34.9 s
Time to interactive is the amount of time it takes for the page to become fully interactive
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
Page load is not fast enough on mobile networks Interactive at 34.9 s
A fast page load over a cellular network ensures a good mobile user experience
Estimated Input Latency 370 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
First Contentful Paint (3G) 46059 ms
First Contentful Paint 3G marks the time at which the first text or image is painted while on a 3G network
Minify CSS Potential savings of 94 KB
Minifying CSS files can reduce network payload sizes
Tap targets are not sized appropriately 71% 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
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
Remove unused CSS Potential savings of 400 KB
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
Serve images in next-gen formats Potential savings of 565 KB
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
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
Server response times are low (TTFB) Root document took 40 ms
Time To First Byte identifies the time at which your server sends a response
Eliminate render-blocking resources Potential savings of 18,640 ms
Resources are blocking the first paint of your page. Consider delivering critical JS/CSS inline and deferring all non-critical JS/styles
Efficiently encode images Potential savings of 112 KB
Optimized images load faster and consume less cellular data
Enable text compression Potential savings of 2,930 KB
Text-based resources should be served with compression (gzip, deflate or brotli) to minimize total network bytes
Reduce the impact of third-party code Third-party code blocked the main thread for 810 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
Total Blocking Time 2,260 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds.
Reduce JavaScript execution time 5.1 s
Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this
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
Defer offscreen images Potential savings of 210 KB
Consider lazy-loading offscreen and hidden images after all critical resources have finished loading to lower time to interactive
Speed Index 20.9 s
Speed Index shows how quickly the contents of a page are visibly populated
First CPU Idle 21.3 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).
Avoid enormous network payloads Total size was 6,556 KB
Large network payloads cost users real money and are highly correlated with long load times
Minimize main-thread work 8.2 s
Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this
First Contentful Paint 20.9 s
First Contentful Paint marks the time at which the first text or image is painted
Includes front-end JavaScript libraries with known security vulnerabilities 9 vulnerabilities detected
Some third-party scripts may contain known security vulnerabilities that are easily identified and exploited by attackers
Avoid chaining critical requests 12 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
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)
First Meaningful Paint 21.3 s
First Meaningful Paint measures when the primary content of a page is visible
Keep request counts low and transfer sizes small 139 requests • 6,556 KB
To set budgets for the quantity and size of page resources, add a budget.json file

Speed And Optimization Tips

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Alexa Rank

0

Local Rank: / Users: / PageViews:

Global Rank

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: 10565
Connection: keep-alive
x-amz-id-2: hM6a/qj/925guRK/J5SDIo5Z+lvvJFf7TYJ1Bpqdp3u0bptP67SlVpKl4pe2oHQzQX/1VcQtnr4=
x-amz-request-id: 150EBCB0BE00FDEA
Date: Tue, 26 Nov 2019 15:40:04 GMT
x-amz-replication-status: COMPLETED
Last-Modified: Tue, 26 Nov 2019 15:35:04 GMT
ETag: "9d776ee30c509a94e87794474db393f0"
x-amz-meta-md5_hash: 9d776ee30c509a94e87794474db393f0
Cache-Control: max-age=300
x-amz-version-id: EY1gI.Xq_I1Zhz3LhyW3.WQFuh8BhfoO
Accept-Ranges: bytes
Server: AmazonS3
X-UA-Compatible: IE=edge,chrome=1
Strict-Transport-Security: max-age=31536000
X-Cache: Hit from cloudfront
Via: 1.1 6ca6a5c7e4ef3511c3ea6d058e2252f9.cloudfront.net (CloudFront)
X-Amz-Cf-Pop: ORD50-C1
X-Amz-Cf-Id: CP89zZTEaNzct_uNrrIPe5ASGg9qdJnhtItSVWZpa2wga5nAr8kwgw==
DNS Records DNS Resource Records associated with a hostname
View DNS Records
Type Name Value Class TTL
A nasa.gov 52.0.14.116 IN 553
A nasa.gov 23.22.39.120 IN 553
NS nasa.gov ns1.nasa.gov IN 599
NS nasa.gov ns2.nasa.gov IN 599
NS nasa.gov ns3.nasa.gov IN 599
MX nasa.gov ndmsvnpf103.ndc.nasa.gov IN 599
MX nasa.gov ndmsvnpf102.ndc.nasa.gov IN 599
MX nasa.gov ndjsvnpf102.ndc.nasa.gov IN 599
MX nasa.gov ndmsvnpf104.ndc.nasa.gov IN 599
MX nasa.gov ndmsvnpf101.ndc.nasa.gov IN 599
MX nasa.gov ndjsvnpf103.ndc.nasa.gov IN 599
MX nasa.gov ndjsvnpf104.ndc.nasa.gov IN 599
MX nasa.gov ndjsvnpf101.ndc.nasa.gov IN 599
TXT nasa.gov amazonses:FXFVeQnEO3Wua+aY/H4aOIH3sSwteE+7YpGrwm8kF/s= IN 599
TXT nasa.gov google-site-verification=BUxd0xTJY4ZjGohBwKDpNms-yOATz92Y54kgme4eKHs IN 599
TXT nasa.gov v=spf1 mx include:_spf-ip4a.nasa.gov include:_spf-ip4b.nasa.gov include:_spf-ip4c.nasa.gov include:_spf-ip4g.nasa.gov include:_spf-ip4m.nasa.gov include:_spf-ip4x.nasa.gov include:spf.protection.outlook.com -all IN 599
TXT nasa.gov HRlHXyx8jXo+9pIaJWFVBPOLVfeI2biAj3VT1woaTFpp05D5/q6AoD5KpUgws539/d2jl8wBJiEr58OEsRVugQ== IN 599
TXT nasa.gov uechcfoubh169akghg2214p54n IN 599
TXT nasa.gov pvv8mevb6qrmqvqi8alhmreg42 IN 599
TXT nasa.gov webexdomainverification.1YPST=f98a61ea-b92e-41f2-87aa-5651b2af43b8 IN 599
TXT nasa.gov MS=ms93625004 IN 599
AAAA nasa.gov 2600:1f18:1f:db01:11af:58af:ae11:f645 IN 552
AAAA nasa.gov 2600:1f18:1f:db00:807b:f1f4:d01b:30b1 IN 552

Comments

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