Documentation for Confluence 2.5.4 - 2.5.8.
Documentation for [Confluence Cloud] and the latest Confluence Server is available too.

Form sizes

Jetty limits form submission sizes to 200000 bytes by default. This can cause the following error to occur when attempting to edit a large page in Confluence.

java.lang.IllegalStateException: Form too large

This limit may be adjusted via the org.mortbay.http.HttpRequest.maxFormContentSize system property passed to the JVM on startup. Setting this value to 500000 may be a good start to avoid this problem but please note that setting this value too high can leave your server vulnerable to denial of service attacks.