Website review learnrxjs.io
Introduction | Learn RxJS
Generated on March 11 2026 03:01 AM
Old data? UPDATE !
The score is 44/100
SEO Content
Title
Introduction | Learn RxJS
Length : 25
Perfect, your title contains between 10 and 70 characters.
Description
Length : 0
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Keywords
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Og Meta Properties
Good, your page take advantage of Og Properties.
| Property | Content |
|---|---|
| title | Introduction | Learn RxJS |
| image | https://www.learnrxjs.io/~gitbook/ogimage/-LwY_OXSco-1BEi5cq_K |
Headings
| H1 | H2 | H3 | H4 | H5 | H6 |
| 1 | 4 | 2 | 9 | 0 | 0 |
- [H1] Introduction
- [H2] hashtagIntroduction
- [H2] hashtagContent
- [H2] hashtagIntroductory Resources
- [H2] hashtagTranslations
- [H3] hashtagBrand New to RxJS?
- [H3] hashtagA Note On References
- [H4] hashtagOperators
- [H4] hashtagUnderstanding Subjects
- [H4] hashtagConcepts
- [H4] hashtagRecipes
- [H4] hashtagConferences
- [H4] hashtagReading
- [H4] hashtagVideos
- [H4] hashtagExercises
- [H4] hashtagTools
Images
We found 4 images on this web page.
4 alt attributes are empty or missing. Add alternative text so that search engines can better understand the content of your images.
Text/HTML Ratio
Ratio : 1%
This page's ratio of text to HTML code is below 15 percent, this means that your website probably needs more text content.
Flash
Perfect, no Flash content has been detected on this page.
Iframe
Great, there are no Iframes detected on this page.
SEO Links
URL Rewrite
Good. Your links looks friendly!
Underscores in the URLs
We have detected underscores in your URLs. You should rather use hyphens to optimize your SEO.
In-page links
We found a total of 46 links including 0 link(s) to files
| Anchor | Type | Juice |
|---|---|---|
| Introduction | Internal | Passing Juice |
| RxJS Primer | Internal | Passing Juice |
| RxJS operators | Internal | Passing Juice |
| Combination | Internal | Passing Juice |
| Conditional | Internal | Passing Juice |
| Creation | Internal | Passing Juice |
| Error Handling | Internal | Passing Juice |
| Multicasting | Internal | Passing Juice |
| Filtering | Internal | Passing Juice |
| Transformation | Internal | Passing Juice |
| Utility | Internal | Passing Juice |
| Complete listing in alphabetical order | Internal | Passing Juice |
| Overview | Internal | Passing Juice |
| AsyncSubject | Internal | Passing Juice |
| BehaviorSubject | Internal | Passing Juice |
| ReplaySubject | Internal | Passing Juice |
| Subject | Internal | Passing Juice |
| Get started transforming streams with map, pluck, and mapTo | Internal | Passing Juice |
| Time based operators comparison | Internal | Passing Juice |
| RxJS v5 -> v6 Upgrade | Internal | Passing Juice |
| Alphabet Invasion Game | Internal | Passing Juice |
| Battleship Game | Internal | Passing Juice |
| Breakout Game | Internal | Passing Juice |
| Car Racing Game | Internal | Passing Juice |
| Catch The Dot Game | Internal | Passing Juice |
| Click Ninja Game | Internal | Passing Juice |
| Flappy Bird Game | Internal | Passing Juice |
| Game Loop | Internal | Passing Juice |
| Horizontal Scroll Indicator | Internal | Passing Juice |
| HTTP Polling | Internal | Passing Juice |
| Lockscreen | Internal | Passing Juice |
| Matrix Digital Rain | Internal | Passing Juice |
| Memory Game | Internal | Passing Juice |
| Mine Sweeper Game | Internal | Passing Juice |
| Platform Jumper Game | Internal | Passing Juice |
| Progress Bar | Internal | Passing Juice |
| Save Indicator | Internal | Passing Juice |
| Smart Counter | Internal | Passing Juice |
| Stop Watch | Internal | Passing Juice |
| Space Invaders Game | Internal | Passing Juice |
| Swipe To Refresh | Internal | Passing Juice |
| Tank Battle Game | Internal | Passing Juice |
| Tetris Game | Internal | Passing Juice |
| Type Ahead | Internal | Passing Juice |
| Uncover Image Game | Internal | Passing Juice |
| GitBook's documentation | External | Passing Juice |
SEO Keywords
Keywords Cloud
hashtag reactive game concepts observables arrow-up-right programming operators rxjs introduction
Keywords Consistency
| Keyword | Content | Title | Keywords | Description | Headings |
|---|---|---|---|---|---|
| rxjs | 27 |  |
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| arrow-up-right | 26 | |
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| game | 15 | |
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| hashtag | 15 | |
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| programming | 11 | |
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Usability
Url
Domain : learnrxjs.io
Length : 12
Favicon
Great, your website has a favicon.
Printability
We could not find a Print-Friendly CSS.
Language
Good. Your declared language is en.
Dublin Core
This page does not take advantage of Dublin Core.
Document
Doctype
HTML 5
Encoding
Perfect. Your declared charset is UTF-8.
W3C Validity
Errors : 0
Warnings : 0
Email Privacy
Great no email address has been found in plain text!
Deprecated HTML
Great! We haven't found deprecated HTML tags in your HTML.
Speed Tips
|
Excellent, your website doesn't use nested tables. |
|
Too bad, your website is using inline styles. |
|
Too bad, your website has too many CSS files (more than 4). |
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Too bad, your website has too many JS files (more than 6). |
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Perfect, your website takes advantage of gzip. |
Mobile
Mobile Optimization
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Apple Icon |
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Meta Viewport Tag |
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Flash content |
Optimization
XML Sitemap
Missing
Your website does not have an XML sitemap - this can be problematic.
A sitemap lists URLs that are available for crawling and can include additional information like your site's latest updates, frequency of changes and importance of the URLs. This allows search engines to crawl the site more intelligently.
Robots.txt
https://learnrxjs.io/robots.txt
Great, your website has a robots.txt file.
Analytics
Missing
We didn't detect an analytics tool installed on this website.
Web analytics let you measure visitor activity on your website. You should have at least one analytics tool installed, but It can also be good to install a second in order to cross-check the data.
PageSpeed Insights
Device
Categories
Free SEO Testing Tool
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