learnrxjs.com | Free Online SEO Audit for learnrxjs.com

Tasks

Select one version of your site as main and make a redirect from other versions to that one.
Avoid using deprecated HTML tags.

SEO

URL

Domain : www.learnrxjs.io/

Character length : 17

Title

Introduction · learn-rxjs

Keywords (meta keywords)

Good! The website does not use “meta keywords”.

Open Graph Protocol

Error! The website does not use the OG (Open Graph) protocol.

Dublin Core

Dublin Core is not used

Underscores in the URLs

Error! Hyphen (-) is a better solution than underscore (_) in the URLs

https://www.learnrxjs.io/operators/error_handling ("Error Handling")
https://www.learnrxjs.io/operators/error_handling/catch.html ("catch")
https://www.learnrxjs.io/operators/error_handling/retry.html ("retry")
https://www.learnrxjs.io/operators/error_handling/retrywhen.html ("retryWhen")

Search engine friendly URLs

Good! The website uses SEO friendly URLs.

Checking the robots.txt file

The robots.txt file is missing!

Social

Social Engagement

Linkedin1

Facebook Share0

Facebook Comments0

Content

Doctype

HTML 5

Encoding

Perfect! The character encoding is set: UTF-8.

Language

We have found the language localisation: ”en”.

Title

Introduction · learn-rxjs

Character length : 25

Good! The title’s length is between 10 and 70 characters.

Text / HTML ratio

Ratio : 7%

Error! The text / HTML code ratio is under 15 percent on this website. This value shows that the website has relatively few text content.

Headings

H1	H2	H3	H4	H5	H6
4	3	1	6	2	0

Heading structure in the source code

<H1> Introduction
<H1> Learn RxJS
<H2> Introduction
<H2> Content
<H4> Operators
<H5> Categories
<H5> Translated Examples
<H4> Concepts
<H4> Recipes
<H2> Introductory Resources
<H4> Reading
<H4> Videos
<H4> Exercises
<H3> A Note On References
<H1> results matching ""
<H1> No results matching ""

Word cloud

rxjs16
programming9
reactive7
introduction7
learning6
concepts5
operators5
clear4
recipes4
observables4
resources4
examples4
listing3
included3
references3
web2
libraries2
gitbook2
new2
staltz2
jafar2
husain2
ben2
transformation2
andré2
offering2
excellent2
videos2
feel2
knowledge2
content2
declarative2
behind2
asynchronous2
site2
easy2
docs2
official2
material2
section2
like2
been2
complete2
points2
lesh2
across2
all2
solid2
both2
functional2
utility2
error2
results2
handling2
filtering2
conditional2
creation2
combination2
matching2
multicasting2

Keyword matrix

word	title	descriptions	heading
rxjs
programming
reactive
introduction
learning
concepts

Two Word cloud

reactive programming4

404 Page

The website has no standard 404 error page.

Flash content

Good! The website does not have any flash contents.

Frame

Good! The website does not use iFrame solutions.

Images

We found 1 images on this web page.

Good! Every image has an alternative text attributes set on this website.

Readability

Flesch–Kincaid Grade Level

8.50

Flesch Reading Ease

41.00

Coleman Liau Index

12.00

Automated Readability Index (ARI)

7.90

Dale–Chall Readability

8.60

SMOG Index

9.10

Spache Readibility

5.00

Number of letters

3486

Number of words

599

Number of sentences

157

Average words per sentences

Number of syllables

1147

Syllables in words

1139

Average syllables in words

1.91

Number of words in first three syllables

166

Percentage of word / syllables

27.71

Words not in Dale-Chall easy-word list

319

Words not in Spache easy-word list

236

Technologies

Deprecated HTML elements

Good! No deprecated HTML tags are detected.

Redirection (www / not www)

Error! The web address is accessible with and without www!

Deprecated HTML elements

Good! No deprecated HTML tags are detected.

Printability

Suggestion! Unfortunately, no printer-friendly CSS found.

Meta Tag (viewport tag, mobile devices)

Error! The meta tag named viewport is missing.

Speed test

Server response time

The server response time is fast enough.

Table layout

Good! No nested tables found.

Number of HTTP resources

Number of source domains

Render blocking resources

The elements below are blocking the “above the fold” rendering.
List of render blocking css files

https://www.learnrxjs.io/gitbook/style.css
https://www.learnrxjs.io/.. /emoji-website.css
https://www.learnrxjs.io/gitbook/gitbook-plugin-prism/prism.css
https://www.learnrxjs.io/.. /website.css
https://www.learnrxjs.io/gitbook/gitbook-plugin-comment/plugin.css
https://www.learnrxjs.io/gitbook/gitbook-plugin-search/search.css
https://www.learnrxjs.io/.. /website.css
https://www.learnrxjs.io/styles/website.css

Speed test – Javascript

Javascript

Good! Just a few javascript files are detected on the website.

File size of all javascript files combined

1.63MB

Javascript minifying

You can save 1.8KB (25% compression) on the analysed URL by minifying the javascript files.

Speed test – CSS

CSS

Good! Just a few CSS files are used on this website.

File size of all css files combined

87.78KB

CSS minifying

You can save 619B (23% compression) on the analysed URL by minifying the CSS files.

By minifying https://www.learnrxjs.io/.. /website.css you can save 348B (23% compression rate)
By minifying https://www.learnrxjs.io/gitbook/gitbook-plugin-prism/prism.css you can save 158B (19% compression rate)
By minifying https://www.learnrxjs.io/gitbook/gitbook-plugin-search/search.css you can save 113B (35% compression rate)

Speed test – Compression

Uncompressed size of the of the HTML

75.08KB

Gzip compression

Your site uses compression.

Speed test – Browser cache

Number of static resources (image, JS, CSS)

Browser cache

The browser cache is not set correctly for all elements.

URL	Duration
https://api.github.com/repos/btroncone/learn-rxjs?callback=callback	60 seconds
https://www.learnrxjs.io/.. /emoji-website.css	10 minutes
https://www.learnrxjs.io/.. /dollar.png	10 minutes
https://www.learnrxjs.io/gitbook/gitbook-plugin-comment/plugin.css	10 minutes
https://www.learnrxjs.io/gitbook/gitbook-plugin-comment/plugin.js	10 minutes
https://www.learnrxjs.io/.. /toggle.js	10 minutes
https://www.learnrxjs.io/gitbook/gitbook-plugin-edit-link/plugin.js	10 minutes
https://www.learnrxjs.io/.. /fontsettings.js	10 minutes
https://www.learnrxjs.io/.. /website.css	10 minutes
https://www.learnrxjs.io/gitbook/gitbook-plugin-ga/plugin.js	10 minutes
https://www.learnrxjs.io/.. /plugin.js	10 minutes
https://www.learnrxjs.io/gitbook/gitbook-plugin-github/plugin.js	10 minutes
https://www.learnrxjs.io/.. /website.css	10 minutes
https://www.learnrxjs.io/gitbook/gitbook-plugin-lunr/lunr.min.js	10 minutes
https://www.learnrxjs.io/gitbook/gitbook-plugin-lunr/search-lunr.js	10 minutes
https://www.learnrxjs.io/gitbook/gitbook-plugin-prism/prism.css	10 minutes
https://www.learnrxjs.io/.. /search-engine.js	10 minutes
https://www.learnrxjs.io/gitbook/gitbook-plugin-search/search.css	10 minutes
https://www.learnrxjs.io/gitbook/gitbook-plugin-search/search.js	10 minutes
https://www.learnrxjs.io/gitbook/gitbook-plugin-sharing/buttons.js	10 minutes
https://www.learnrxjs.io/gitbook/gitbook.js	10 minutes
https://www.learnrxjs.io/gitbook/style.css	10 minutes
https://www.learnrxjs.io/gitbook/theme.js	10 minutes
https://www.learnrxjs.io/search_index.json	10 minutes
https://www.learnrxjs.io/styles/website.css	10 minutes
https://www.google-analytics.com/analytics.js	2 hours

Speed test – Images

File size of all images combined

109.11KB

Image optimisation

All images are optimized.

Links

We found a total of 112 different links.
Internal links: 91
External links: 21

External links:

Link text (anchor)	Link strength
learn-rxjs
Published with GitBook
RxJS
nearly any language
hard
imperative to declarative style
official docs
JSBin
JSFiddle
Chinese version of original RxJS 5 Operators By Example
RxJS Introduction
The Introduction to Reactive Programming You've Been Missing
Asynchronous Programming: The End of The Loop
What is RxJS?
Creating Observable from Scratch
Introduction to RxJS Marble Testing
Introduction to Reactive Programming
Reactive Programming using Observables
Functional Programming in JavaScript
Denis Stoyanov's
eBook

Internal links:

Link text (anchor)	Link strength
Introduction
Operators
Combination
combineAll
combineLatest
concat
concatAll
forkJoin
merge
mergeAll
race
startWith
withLatestFrom
zip
Conditional
defaultIfEmpty
every
Creation
create
empty
from
fromEvent
fromPromise
interval
of
range
throw
timer
Error Handling
catch
retry
retryWhen
Multicasting
publish
multicast
share
Filtering
debounce
debounceTime
distinctUntilChanged
filter
first
ignoreElements
last
sample
single
skip
skipUntil
skipWhile
take
takeUntil
takeWhile
throttle
throttleTime
Transformation
buffer
bufferCount
bufferTime
bufferToggle
bufferWhen
concatMap
concatMapTo
expand
groupBy
map
mapTo
mergeMap
partition
pluck
scan
switchMap
window
windowCount
windowTime
windowToggle
windowWhen
Utility
do
delay
delayWhen
dematerialize
let
toPromise
Full Listing
Recipes
Smart Counter
Concepts
RxJS 5 operators
Complete listing in alphabetical order
Complete Recipe Listing
https://www.learnrxjs.io/operators

Website security

95.85.1.232

External hidden links

Good! No hidden external links found

Looking for eval()

Good! No eval(bas64_decode()) scripts are found

Checking for XSS vulnerability

No XSS vulnerability found

Email encryption

Good! We have not found any unencrypted email addresses.

Sites on same ip

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smartneural.org

coc-handbook.com

financewithoutforce.com

bookofmormonorigins.org

jforexcn.com

fullstackhandbook.com

agilehandbook.info

inferentialthinking.com

ngpuppybook.com

Icons

Favicon

Good! The website uses favicon.

Typos

earnrxjs.com, lpearnrxjs.com, pearnrxjs.com, loearnrxjs.com, oearnrxjs.com, learnrxjs.com, earnrxjs.com, liearnrxjs.com, iearnrxjs.com, lkearnrxjs.com, kearnrxjs.com, lmearnrxjs.com, mearnrxjs.com, l.earnrxjs.com, .earnrxjs.com, larnrxjs.com, lewarnrxjs.com, lwarnrxjs.com, lesarnrxjs.com, lsarnrxjs.com, learnrxjs.com, larnrxjs.com, ledarnrxjs.com, ldarnrxjs.com, lefarnrxjs.com, lfarnrxjs.com, lerarnrxjs.com, lrarnrxjs.com, le3arnrxjs.com, l3arnrxjs.com, le4arnrxjs.com, l4arnrxjs.com, lernrxjs.com, leaqrnrxjs.com, leqrnrxjs.com, leawrnrxjs.com, lewrnrxjs.com, leazrnrxjs.com, lezrnrxjs.com, learnrxjs.com, lernrxjs.com, leaxrnrxjs.com, lexrnrxjs.com, leasrnrxjs.com, lesrnrxjs.com, leanrxjs.com, learenrxjs.com, leaenrxjs.com, leardnrxjs.com, leadnrxjs.com, learfnrxjs.com, leafnrxjs.com, leargnrxjs.com, leagnrxjs.com, lear4,nrxjs.com, lea4,nrxjs.com, leartnrxjs.com, leatnrxjs.com, lear5nrxjs.com, lea5nrxjs.com, learrxjs.com, learnbrxjs.com, learbrxjs.com, learngrxjs.com, leargrxjs.com, learnhrxjs.com, learhrxjs.com, learnjrxjs.com, learjrxjs.com, learnmrxjs.com, learmrxjs.com, learn rxjs.com, lear rxjs.com, learnxjs.com, learnrexjs.com, learnexjs.com, learnrdxjs.com, learndxjs.com, learnrfxjs.com, learnfxjs.com, learnrgxjs.com, learngxjs.com, learnr4,xjs.com, learn4,xjs.com, learnrtxjs.com, learntxjs.com, learnr5xjs.com, learn5xjs.com, learnrjs.com, learnrxzjs.com, learnrzjs.com, learnrxajs.com, learnrajs.com, learnrxsjs.com, learnrsjs.com, learnrxdjs.com, learnrdjs.com, learnrxcjs.com, learnrcjs.com, learnrx js.com, learnr js.com, learnrxs.com, learnrxjns.com, learnrxns.com, learnrxjhs.com, learnrxhs.com, learnrxjys.com, learnrxys.com, learnrxjus.com, learnrxus.com, learnrxjis.com, learnrxis.com, learnrxjks.com, learnrxks.com, learnrxjms.com, learnrxms.com, learnrxj.com, learnrxjsq.com, learnrxjq.com, learnrxjsw.com, learnrxjw.com, learnrxjse.com, learnrxje.com, learnrxjsz.com, learnrxjz.com, learnrxjsx.com, learnrxjx.com, learnrxjsc.com, learnrxjc.com

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SEO report of learnrxjs.com