Website review kotlinlang.org
Kotlin Programming Language
Generated on March 04 2026 00:26 AM
Old data? UPDATE !
The score is 53/100
SEO Content
Title
Kotlin Programming Language
Length : 27
Perfect, your title contains between 10 and 70 characters.
Description
Kotlin is a concise and multiplatform programming language by JetBrains. Enjoy coding and build server-side, mobile, web, and desktop applications efficiently.
Length : 159
Great, your meta description contains between 70 and 160 characters.
Keywords
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Og Meta Properties
Good, your page take advantage of Og Properties.
| Property | Content |
|---|---|
| title | Kotlin Programming Language |
| type | website |
| url | https://kotlinlang.org/ |
| image | https://kotlinlang.org/assets/images/open-graph/general.png |
| description | Kotlin is a concise and multiplatform programming language by JetBrains. Enjoy coding and build server-side, mobile, web, and desktop applications efficiently. |
| site_name | Kotlin |
Headings
| H1 | H2 | H3 | H4 | H5 | H6 |
| 1 | 7 | 6 | 0 | 0 | 0 |
- [H1] Kotlin
- [H2] Latest news
- [H2] Kotlin in action
- [H2] Share code on your terms and for different platforms
- [H2] Kotlin + AI
- [H2] Big, friendly and helpful community
- [H2] Kotlin Foundation
- [H2] Start using Kotlin today!
- [H3] 15 Things To Do Before, During, and After KotlinConf’26
- [H3] Java to Kotlin Conversion Comes to Visual Studio Code
- [H3] Kodee’s Kotlin Roundup: KotlinConf ’26 Updates, New Releases, and More
- [H3] Building Modular Monoliths With Kotlin and Spring
- [H3] What you get with Kotlin + AI
- [H3] Build your own AI agents with Koog
Images
We found 25 images on this web page.
3 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 : 3%
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
Too Bad, you have Iframes on the web pages, this mean that content in an Iframe cannot be indexed.
SEO Links
URL Rewrite
Good. Your links looks friendly!
Underscores in the URLs
Perfect! No underscores detected in your URLs.
In-page links
We found a total of 36 links including 2 link(s) to files
| Anchor | Type | Juice |
|---|---|---|
| v2.3.10 | External | Passing Juice |
| Multiplatform | Internal | Passing Juice |
| Server-side | Internal | Passing Juice |
| Data science | Internal | Passing Juice |
| Android | Internal | Passing Juice |
| Case studies | Internal | Passing Juice |
| Language guide | Internal | Passing Juice |
| Multiplatform development | Internal | Passing Juice |
| APIs overview | Internal | Passing Juice |
| Standard library (stdlib) | Internal | Passing Juice |
| Test library (kotlin.test) | Internal | Passing Juice |
| Coroutines (kotlinx.coroutines) | Internal | Passing Juice |
| Serialization (kotlinx.serialization) | Internal | Passing Juice |
| Kotlin I/O library (kotlinx-io) | Internal | Passing Juice |
| Date and time (kotlinx-datetime) | Internal | Passing Juice |
| JVM Metadata (kotlin-metadata-jvm) | Internal | Passing Juice |
| Kotlin Gradle plugins | Internal | Passing Juice |
| Ktor | External | Passing Juice |
| Compose Multiplatform Material3 | Internal | Passing Juice |
| Community | Internal | Passing Juice |
| Teach | Internal | Passing Juice |
| Playground | Internal | Passing Juice |
| Koans | Internal | Passing Juice |
| Contributing to Kotlin | Internal | Passing Juice |
| Releases | Internal | Passing Juice |
| Press Kit | Internal | Passing Juice |
| Security | Internal | Passing Juice |
| Blog | External | Passing Juice |
| Issue Tracker | External | Passing Juice |
| Brand Assets | Internal | Passing Juice |
| Careers | External | Passing Juice |
| Kotlin Merch | External | Passing Juice |
| Opt-Out | Internal | Passing Juice |
| JetBrains | External | Passing Juice |
| Kotlin Foundation | Internal | Passing Juice |
| Apache 2 license | External | Passing Juice |
SEO Keywords
Keywords Cloud
ecosystem community across from server-side code kotlin java development multiplatform
Keywords Consistency
| Keyword | Content | Title | Keywords | Description | Headings |
|---|---|---|---|---|---|
| kotlin | 39 |  |
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| multiplatform | 11 | |
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| code | 9 | |
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| community | 8 | |
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| development | 6 | |
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Usability
Url
Domain : kotlinlang.org
Length : 14
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
Warning! At least one email address has been found in the plain text. Use free antispam protector to hide email from spammers.
Deprecated HTML
Great! We haven't found deprecated HTML tags in your HTML.
Speed Tips
|
Excellent, your website doesn't use nested tables. |
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Too bad, your website is using inline styles. |
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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
Great, your website has an XML sitemap.
| https://kotlinlang.org/sitemap_index.xml |
Robots.txt
https://kotlinlang.org/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
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