Programming language: Kotlin
Tags: Misc    

krakdown alternatives and similar libraries

Based on the "Misc" category.
Alternatively, view krakdown alternatives based on common mentions on social networks and blogs.

Do you think we are missing an alternative of krakdown or a related project?

Add another 'Misc' Library



Krakdown is a markdown parser written in native Kotlin (no external dependencies). It is meant to be used either on the server side (running in a JVM), or to be cross-compiled into Javascript and run in a browser.

Project status

The project has a small portion of the common-mark specification covered (mostly around lists and blockquotes).

It is not heavily tested yet, and probably contains a large amount of bugs, and potential performance issues.


The parser is broken into two parts: a block parser and an inline parser. Both parsers work via chain of responsibility where rules are evaluated in order on the input.

The inline parser consists of a lexer and a parser. The lexer is fairly heavy, as it evaluates tokens based on current context (it performs look-behind).


Commonmark compatibility

Next steps here would involve adding the remaining common mark tests to the src/test/resources/commonmark.testspec specification file and then performing the necessary fixes in the parsers to get this project to 100% commonmark compatibility.

Streaming parsing

Once common mark compatibility is reached, the parser will be updated to support stream parsing, i.e. consume data from an input stream and produce a stream of parse nodes. This would, ideally, decrease the memory footprint of the parser, as it would ideally keep at most the necessary memory for processing a single block of text.


At present, the performance of the parser is not thoroughly measured. A test suite should be built to measure the performance of the parser.

Support for non-standard markdown extensions

Support for tables, todos, footnotes, definition lists, custom block quotes, table of contents, etc.