Website review koff.io
KOFF.io
Generated on February 04 2026 12:24 PM
Old data? UPDATE !
The score is 51/100
SEO Content
Title
KOFF.io
Length : 7
Ideally, your title should contain between 10 and 70 characters (spaces included). Use this free tool to calculate text length.
Description
❤ Scala since 2015
Length : 18
Ideally, your meta description should contain between 70 and 160 characters (spaces included). Use this free tool to calculate text length.
Keywords
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Og Meta Properties
Good, your page take advantage of Og Properties.
| Property | Content |
|---|---|
| site_name | KOFF.io |
| description | ❤ Scala since 2015 |
| url | https://coffius.github.io/ |
Headings
| H1 | H2 | H3 | H4 | H5 | H6 |
| 14 | 5 | 0 | 0 | 0 | 0 |
- [H1] KOFF.io
- [H1] Gathering effects in Tagless Final
- [H1] Context Passing in Tagless Final
- [H1] Sum Data Types with Shapeless
- [H1] HLL counters as Cassandra user defined aggregates
- [H1] Tips about variance in scala
- [H1] Pagination and Streams
- [H1] Validation in scala
- [H1] Implementations
- [H1] Using T-Digest: Median calculation and anomaly detection
- [H1] Comparison of HLL implementations
- [H1] Lens in scala
- [H1] True fail-fast async error handling with Expression
- [H1] Practical Scalaz: Make async operations with scalaz.Either and Futures
- [H2] Contents
- [H2] Main problem
- [H2] General Info
- [H2] List of implementations
- [H2] Intro
Images
We found 0 images on this web page.
Good, most or all of your images have alt attributes.
Text/HTML Ratio
Ratio : 0%
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
Perfect! No underscores detected in your URLs.
In-page links
We found a total of 47 links including 0 link(s) to files
| Anchor | Type | Juice |
|---|---|---|
| Hugo | External | Passing Juice |
| poison | External | Passing Juice |
| Gathering effects in Tagless Final | External | Passing Juice |
| Read More… | Internal | Passing Juice |
| Context Passing in Tagless Final | External | Passing Juice |
| Read More… | Internal | Passing Juice |
| Sum Data Types with Shapeless | External | Passing Juice |
| What is ADT? | Internal | Passing Juice |
| Sealed trait as a sum type | Internal | Passing Juice |
| Extending ADTs using Wrapper + Evidence | Internal | Passing Juice |
| Coproduct as a sum type | Internal | Passing Juice |
| Poly1 as pattern matching | Internal | Passing Juice |
| Merging sum types with Shapeless | Internal | Passing Juice |
| Read More… | Internal | Passing Juice |
| HLL counters as Cassandra user defined aggregates | External | Passing Juice |
| the previous article | Internal | Passing Juice |
| Read More… | Internal | Passing Juice |
| Tips about variance in scala | External | Passing Juice |
| Read More… | Internal | Passing Juice |
| Pagination and Streams | External | Passing Juice |
| Read More… | Internal | Passing Juice |
| Validation in scala | External | Passing Juice |
| Accord | External | Passing Juice |
| Docs here | External | Passing Juice |
| Docs here | External | Passing Juice |
| DValidation | External | Passing Juice |
| io.underscore.validation | External | Passing Juice |
| here | External | Passing Juice |
| Read More… | Internal | Passing Juice |
| Using T-Digest: Median calculation and anomaly detection | External | Passing Juice |
| Read More… | Internal | Passing Juice |
| Comparison of HLL implementations | External | Passing Juice |
| here | External | Passing Juice |
| twitter/algebird | External | Passing Juice |
| prasanthj/hyperloglog | External | Passing Juice |
| addthis/stream-lib | External | Passing Juice |
| aggregateknowledge/java-hll | External | Passing Juice |
| Read More… | Internal | Passing Juice |
| Lens in scala | External | Passing Juice |
| Read More… | Internal | Passing Juice |
| True fail-fast async error handling with Expression | External | Passing Juice |
| article | Internal | Passing Juice |
| link | External | Passing Juice |
| Read More… | Internal | Passing Juice |
| Practical Scalaz: Make async operations with scalaz.Either and Futures | External | Passing Juice |
| here | External | Passing Juice |
| Read More… | Internal | Passing Juice |
SEO Keywords
Keywords Cloud
Keywords Consistency
| Keyword | Content | Title | Keywords | Description | Headings |
|---|
Usability
Url
Domain : koff.io
Length : 7
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. |
|
Great, your website has few CSS files. |
|
Perfect, your website has few JavaScript files. |
|
Perfect, your website takes advantage of gzip. |
Mobile
Mobile Optimization
|
Apple Icon |
|
Meta Viewport Tag |
|
Flash content |
Optimization
XML Sitemap
Great, your website has an XML sitemap.
| https://koff.io/sitemap.xml |
Robots.txt
https://koff.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
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