Important: This news article covers an old version of Javalin (v5.6.0). The current version is v6.1.3.
See the documentation page for up-to-date information.

Javalin 5.6.0 has been released!

Javalin now supports Java 9 modules! We’ve also added various improvements, including the ability to configure HttpConfiguration for Jetty, and a method to clear cache of pre-compressed static files.


  • [jetty] Add ability to configure HttpConfiguration #1910
  • [static-files] Add method to clear cache of pre-compressed files #1903
  • [meta] Support Java 9 modules
  • [websocket] Add missing headerAsClass to WsContext #1878
  • [corsplugin] Add maxAge parameter to config #1880
  • [content-types] Support AVIF #1879
  • [routing] Add case insensitive matching #1892


  • [javalinvue] Fix filesystem scanning issue #1905
  • [gson] Fix JavalinGson#toJsonStream #1885


  • [compression] Add brotli4j and make it default in javalin-bundle #1904
  • [compression] Introduce Compressor interface #1897
  • [websocket] Add method level docs to WsContext #1877

Test Improvement

  • [tests] Improve tests using selenium/webdriver #1886
  • [tests] Improve custom jetty filter test