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Top Technologies

Nginx
Web Servers
Google Tag Manager
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Google Font API
Font Scripts
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CDN
Apache
Web Servers
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Web Frameworks

2 nptel.ac.in Last Updated: 12 months

Success 39% of passed verification steps
Warning 23% of total warning
Errors 38% of total errors, require fast action

Desktop

Mobile

Performance Desktop Score 79%
Best Practices Desktop Score 62%
SEO Desktop Score 67%
Progressive Web App Desktop Score 46%
Performance Mobile Score 44%
Best Practices Mobile Score 62%
SEO Mobile Score 55%
Progressive Web App Mobile Score 44%
Page Authority Authority 0%
Domain Authority Domain Authority 0%
Moz Rank 0.0/10
Bounce Rate Rate 0%
Charset Encoding
Great, language/character encoding is specified: UTF-8
Title Tag 55 Characters
NPTEL, ONLINE COURSES AND CERTIFICATION, LEARN FOR---
Meta Description 151 Characters
Nptel is a joint initiative from IITs and IISc to offer online courses & certification. Learn for---, Pay a small fee for exam and get a certificate
Effective URL 19 Characters
https://nptel.ac.in
Excerpt Page content
Nptel, online courses and certification, Learn for--- ...
Google Preview Your look like this in google search result
NPTEL, ONLINE COURSES AND CERTIFICATION, LEARN FOR---
https://nptel.ac.in
Nptel is a joint initiative from IITs and IISc to offer online courses & certification. Learn for---, Pay a small fee for exam and get a certificat
Robots.txt File No Found
Sitemap.xml File No Found
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: 2018-10-04 / 2 years
Create on: 2013-12-02 / 7 years
Expires on: 2023-12-02 / 36 months 15 days

ERNET India ,IN
Registrar URL: http://www.ernet.in

Nameservers
DNS1.IITM.AC.IN
DNS2.IITM.AC.IN
Page Size Code & Text Ratio
Document Size: ~19.67 KB
Code Size: ~11.11 KB
Text Size: ~8.56 KB Ratio: 43.50%

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
Reduce server response times (TTFB) Root document took 1,270 ms
Time To First Byte identifies the time at which your server sends a response
Eliminate render-blocking resources Potential savings of 350 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 595 KB
Optimized images load faster and consume less cellular data
Minimize third-party usage Third-party code blocked the main thread for 240 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 160 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds.
JavaScript execution time 0.6 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
Properly size images Potential savings of 1,219 KB
Serve images that are appropriately-sized to save cellular data and improve load time
Speed Index 2.7 s
Speed Index shows how quickly the contents of a page are visibly populated
First CPU Idle 1.9 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).
Avoids enormous network payloads Total size was 2,274 KB
Large network payloads cost users real money and are highly correlated with long load times
Minimizes main-thread work 1.0 s
Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this
First Contentful Paint 0.8 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 7 vulnerabilities detected
Some third-party scripts may contain known security vulnerabilities that are easily identified and exploited by attackers
Avoid chaining critical requests 14 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 193 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)
Minify JavaScript Potential savings of 37 KB
Minifying JavaScript files can reduce payload sizes and script parse time
First Meaningful Paint 0.8 s
First Meaningful Paint measures when the primary content of a page is visible
Keep request counts low and transfer sizes small 54 requests • 2,274 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 35 resources found
A long cache lifetime can speed up repeat visits to your page
Max Potential First Input Delay 120 ms
The maximum potential First Input Delay that your users could experience is the duration, in milliseconds, of the longest task
Time to Interactive 2.0 s
Time to interactive is the amount of time it takes for the page to become fully interactive
Links do not have descriptive text 4 links found
Descriptive link text helps search engines understand your content
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
Estimated Input Latency 20 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
Remove unused CSS Potential savings of 59 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 896 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 3 user timings
Consider instrumenting your app with the User Timing API to measure your app's real-world performance during key user experiences

Mobile

Mobile Screenshot
Reduce JavaScript execution time 1.7 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
Properly size images Potential savings of 933 KB
Serve images that are appropriately-sized to save cellular data and improve load time
Speed Index 7.9 s
Speed Index shows how quickly the contents of a page are visibly populated
First CPU Idle 7.9 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).
Avoids enormous network payloads Total size was 2,310 KB
Large network payloads cost users real money and are highly correlated with long load times
Minimize main-thread work 3.3 s
Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this
First Contentful Paint 2.9 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 7 vulnerabilities detected
Some third-party scripts may contain known security vulnerabilities that are easily identified and exploited by attackers
Avoid chaining critical requests 14 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 193 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)
Minify JavaScript Potential savings of 37 KB
Minifying JavaScript files can reduce payload sizes and script parse time
First Meaningful Paint 2.9 s
First Meaningful Paint measures when the primary content of a page is visible
Keep request counts low and transfer sizes small 54 requests • 2,310 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 34 resources found
A long cache lifetime can speed up repeat visits to your page
Max Potential First Input Delay 360 ms
The maximum potential First Input Delay that your users could experience is the duration, in milliseconds, of the longest task
Time to Interactive 8.6 s
Time to interactive is the amount of time it takes for the page to become fully interactive
Links do not have descriptive text 4 links found
Descriptive link text helps search engines understand your content
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
Estimated Input Latency 120 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) 5615.5 ms
First Contentful Paint 3G marks the time at which the first text or image is painted while on a 3G network
Remove unused CSS Potential savings of 62 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 896 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 3 user timings
Consider instrumenting your app with the User Timing API to measure your app's real-world performance during key user experiences
Reduce server response times (TTFB) Root document took 1,040 ms
Time To First Byte identifies the time at which your server sends a response
Eliminate render-blocking resources Potential savings of 1,020 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 595 KB
Optimized images load faster and consume less cellular data
Reduce the impact of third-party code Third-party code blocked the main thread for 1,090 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 780 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds.

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
Date: Mon, 16 Dec 2019 10:33:19 GMT
Server: Apache
Last-Modified: Wed, 11 Dec 2019 05:47:50 GMT
ETag: "4eaa-599672b4afd81-gzip"
Accept-Ranges: bytes
Vary: Accept-Encoding
Content-Encoding: gzip
X-Content-Type-Options: nosniff
X-Frame-Options: sameorigin
Content-Length: 5046
Content-Type: text/html
DNS Records DNS Resource Records associated with a hostname
View DNS Records

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