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Top Technologies

Nginx
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Web Frameworks

92 harvard.edu Last Updated: 10 months

Success 70% of passed verification steps
Warning 15% of total warning
Errors 15% of total errors, require fast action

Desktop

Mobile

Performance Desktop Score 90%
Best Practices Desktop Score 77%
SEO Desktop Score 91%
Progressive Web App Desktop Score 31%
Page Authority Authority 69%
Domain Authority Domain Authority 94%
Moz Rank 6.9/10
Bounce Rate Rate 0%
Charset Encoding
Great, language/character encoding is specified: UTF-8
Title Tag 18 Characters
HARVARD UNIVERSITY
Meta Description 220 Characters
Harvard University is devoted to excellence in teaching, learning, and research, and to developing leaders in many disciplines who make a difference globally. Harvard University is made up of 11 principal academic units.
Effective URL 23 Characters
https://www.harvard.edu
Excerpt Page content
Harvard University Jump to main conten...
Keywords Cloud Density
harvard35 november26 read20 twitter20 more16 view11 listen10 podcast10 browse10 tweet10
Keyword Consistency Keyword density is one of the main terms in SEO
Keyword Freq Title Desc Domain H1 H2
harvard 35
november 26
read 20
twitter 20
more 16
view 11
listen 10
podcast 10
browse 10
tweet 10
Google Preview Your look like this in google search result
HARVARD UNIVERSITY
https://www.harvard.edu
Harvard University is devoted to excellence in teaching, learning, and research, and to developing leaders in many disciplines who make a difference g
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 / 617 months 17 days
Page Size Code & Text Ratio
Document Size: ~75.62 KB
Code Size: ~52.48 KB
Text Size: ~23.15 KB Ratio: 30.61%

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
First Meaningful Paint 0.5 s
First Meaningful Paint measures when the primary content of a page is visible
Keep request counts low and transfer sizes small 77 requests • 5,778 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 17 resources found
A long cache lifetime can speed up repeat visits to your page
Max Potential First Input Delay 140 ms
The maximum potential First Input Delay that your users could experience is the duration, in milliseconds, of the longest task
Time to Interactive 2.8 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 13.7 s
A fast page load over a cellular network ensures a good mobile user experience
Estimated Input Latency 30 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 3,134 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 3 user timings
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 170 ms
Time To First Byte identifies the time at which your server sends a response
Eliminate render-blocking resources Potential savings of 0 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 1,854 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 270 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 170 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds.
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
Defer offscreen images Potential savings of 1,310 KB
Consider lazy-loading offscreen and hidden images after all critical resources have finished loading to lower time to interactive
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 2,365 KB
Serve images that are appropriately-sized to save cellular data and improve load time
Speed Index 1.4 s
Speed Index shows how quickly the contents of a page are visibly populated
First CPU Idle 2.2 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 5,778 KB
Large network payloads cost users real money and are highly correlated with long load times
Minimizes main-thread work 1.6 s
Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this
First Contentful Paint 0.5 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 2 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
Avoid an excessive DOM size 953 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 11 KB
Minifying JavaScript files can reduce payload sizes and script parse time

Mobile

Mobile Screenshot

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
Connection: keep-alive
Content-Length: 18633
Cache-Control: public, max-age=300
Content-Encoding: gzip
Content-Language: en
Content-Type: text/html; charset=utf-8
Etag: W/"1574760950-0"
Expires: Sun, 19 Nov 1978 05:00:00 GMT
Last-Modified: Tue, 26 Nov 2019 09:35:50 GMT
Link: ; rel="canonical",; rel="shortlink"
Server: nginx
Strict-Transport-Security: max-age=31622400
X-Content-Type-Options: nosniff
X-Drupal-Cache: MISS
X-Frame-Options: SAMEORIGIN
X-Generator: Drupal 7 (http://drupal.org)
X-Pantheon-Styx-Hostname: styx-fe1-a-789d66bff9-pbj96
X-Styx-Req-Id: 220754a5-1030-11ea-9bf3-e2708acee5bb
Date: Tue, 26 Nov 2019 09:36:18 GMT
X-Served-By: cache-mdw17353-MDW
X-Cache: HIT
X-Cache-Hits: 1
X-Timer: S1574760978.098938,VS0,VE1
Vary: Accept-Encoding, Cookie, Cookie
Age: 28
Accept-Ranges: bytes
Via: 1.1 varnish
DNS Records DNS Resource Records associated with a hostname
View DNS Records

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