Rdrr.io - SEO Checker - Website Review

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46 rdrr.io Last Updated: 6 months

Success 85% of passed verification steps

Warning 0% of total warning

Errors 15% of total errors, require fast action

Mobile

Performance Desktop Score 98%

Best Practices Desktop Score 85%

SEO Desktop Score 91%

Progressive Web App Desktop Score 27%

Performance Mobile Score 52%

Best Practices Mobile Score 85%

SEO Mobile Score 90%

Progressive Web App Mobile Score 30%

Page Authority Authority 45%

Domain Authority Domain Authority 45%

Moz Rank 4.5/10

Bounce Rate Rate 0%

Charset Encoding

Great, language/character encoding is specified: UTF-8

Title Tag 23 Characters

R PACKAGE DOCUMENTATION

Meta Description 98 Characters

A comprehensive index of R packages and documentation from CRAN, Bioconductor, GitHub and R-Forge.

Effective URL 15 Characters

https://rdrr.io

Excerpt Page content

R Package Documentation rdrr.io Find an R package R language docs Run R in your browser R Notebooks ...

Keywords Cloud Density

packages13 package8 documentation7 find7 code5 data4 github4 search3 language3 cran3

Keyword Consistency Keyword density is one of the main terms in SEO

Keyword	Freq	Title	Desc	Domain	H1	H2
packages	13
package	8
documentation	7
find	7
code	5
data	4
github	4
search	3
language	3
cran	3

Google Preview Your look like this in google search result

R PACKAGE DOCUMENTATION

https://rdrr.io

A comprehensive index of R packages and documentation from CRAN, Bioconductor, GitHub and R-Forge.

Robots.txt File Detected

http://rdrr.io/robots.txt

Sitemap.xml File Detected

http://rdrr.io/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: 2018-12-16 / 2 years

Create on: 2015-01-20 / 6 years

Expires on: 2020-01-20 / 9 months 4 days

Gandi SAS ,AU

Registrar Whois Server: whois.gandi.net

Registrar URL: https://www.gandi.net/whois

Nameservers

DELL.NS.CLOUDFLARE.COM

BOYD.NS.CLOUDFLARE.COM

Page Size Code & Text Ratio

Document Size: ~31.21 KB

Code Size: ~9.42 KB

Text Size: ~21.79 KB Ratio: 69.80%

Estimation Traffic and Earnings

Only Registered Users

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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

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 54 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 91 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 8 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 440 ms

Time To First Byte identifies the time at which your server sends a response

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

Total Blocking Time 50 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 8 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 6 KB

Serve images that are appropriately-sized to save cellular data and improve load time

Speed Index 1.1 s

Speed Index shows how quickly the contents of a page are visibly populated

First CPU Idle 1.7 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).

Avoids enormous network payloads Total size was 1,345 KB

Large network payloads cost users real money and are highly correlated with long load times

Minimizes main-thread work 1.5 s

Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this

First Contentful Paint 0.2 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 1 vulnerability detected

Some third-party scripts may contain known security vulnerabilities that are easily identified and exploited by attackers

Avoid chaining critical requests 8 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 187 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 0.2 s

First Meaningful Paint measures when the primary content of a page is visible

Keep request counts low and transfer sizes small 95 requests • 1,345 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 11 resources found

A long cache lifetime can speed up repeat visits to your page

Max Potential First Input Delay 90 ms

The maximum potential First Input Delay that your users could experience is the duration, in milliseconds, of the longest task

Time to Interactive 1.9 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 11.7 s

A fast page load over a cellular network ensures a good mobile user experience

Mobile

Reduce JavaScript execution time 3.8 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 8 KB

Consider lazy-loading offscreen and hidden images after all critical resources have finished loading to lower time to interactive

Speed Index 4.7 s

Speed Index shows how quickly the contents of a page are visibly populated

First CPU Idle 11.6 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 1,648 KB

Large network payloads cost users real money and are highly correlated with long load times

Minimize main-thread work 7.3 s

Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this

First Contentful Paint 0.9 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 1 vulnerability detected

Some third-party scripts may contain known security vulnerabilities that are easily identified and exploited by attackers

Avoid chaining critical requests 8 chains found

Avoids an excessive DOM size 189 elements

First Meaningful Paint 0.9 s

First Meaningful Paint measures when the primary content of a page is visible

Keep request counts low and transfer sizes small 107 requests • 1,648 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 14 resources found

A long cache lifetime can speed up repeat visits to your page

Max Potential First Input Delay 330 ms

The maximum potential First Input Delay that your users could experience is the duration, in milliseconds, of the longest task

Time to Interactive 12.5 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 12.5 s

A fast page load over a cellular network ensures a good mobile user experience

Estimated Input Latency 120 ms

First Contentful Paint (3G) 1681 ms

First Contentful Paint 3G marks the time at which the first text or image is painted while on a 3G network

Tap targets are not sized appropriately 72% 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 95.42% 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 54 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 160 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 16 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 480 ms

Time To First Byte identifies the time at which your server sends a response

Minimize third-party usage Third-party code blocked the main thread for 230 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 1,700 ms

Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds.

Speed And Optimization Tips

Only Registered Users

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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: Sun, 26 Apr 2020 15:45:05 GMT
Content-Type: text/html; charset=utf-8
Connection: keep-alive
Set-Cookie: __cfduid=da84df987fe8d41d69aec80b0acd675af1587915905; expires=Tue, 26-May-20 15:45:05 GMT; path=/; domain=.rdrr.io; HttpOnly; SameSite=Lax; Secure
Vary: Accept-Encoding
X-Frame-Options: SAMEORIGIN
Cache-Control: public, max-age=3600, s-maxage=3600
P3P: CP="ALL DSP COR PSAa PSDa OUR NOR ONL UNI COM NAV"
CF-Cache-Status: DYNAMIC
Expect-CT: max-age=604800, report-uri="https://report-uri.cloudflare.com/cdn-cgi/beacon/expect-ct"
Server: cloudflare
CF-RAY: 58a16dc7fceb74a7-IAD
Content-Encoding: gzip
alt-svc: h3-27=":443"; ma=86400, h3-25=":443"; ma=86400, h3-24=":443"; ma=86400, h3-23=":443"; ma=86400
cf-request-id: 0258c2f0f9000074a798bd9200000001

DNS Records DNS Resource Records associated with a hostname

View DNS Records

Type	Name	Value	Class	TTL
A	rdrr.io	104.26.12.166	IN	299
A	rdrr.io	104.26.13.166	IN	299
NS	rdrr.io	boyd.ns.cloudflare.com	IN	86400
NS	rdrr.io	dell.ns.cloudflare.com	IN	86400
MX	rdrr.io	aspmx.l.google.com	IN	300
MX	rdrr.io	alt3.aspmx.l.google.com	IN	300
MX	rdrr.io	alt2.aspmx.l.google.com	IN	300
MX	rdrr.io	alt4.aspmx.l.google.com	IN	300
MX	rdrr.io	alt1.aspmx.l.google.com	IN	300
TXT	rdrr.io	google-site-verification=gD2lbBR99ElUI15KAG_W6mYqXZ8uShHt7g5nDgYY7oY	IN	300
TXT	rdrr.io	yandex-verification: 3ea3262abe63a8ad	IN	300
AAAA	rdrr.io	2606:4700:20::681a:da6	IN	196
AAAA	rdrr.io	2606:4700:20::681a:ca6	IN	196

Your Website Score is

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46 rdrr.io Last Updated: 6 months

Desktop

Mobile

Estimation Traffic and Earnings

Sign up for see all features and reviews about this site

Technologies

CloudFlare

Google Font API

Semantic-ui

PWA - Manifest

Desktop

Mobile

Speed And Optimization Tips

Sign up for see all features and reviews about this site

Alexa Rank

0

Information Server

Comments