System Requirements

This website contains links to software which is either no longer maintained or will be supported only until the end of 2019 (CKFinder 2). For the latest documentation about current CKSource projects, including software like CKEditor 4/CKEditor 5, CKFinder 3, Cloud Services, Letters, Accessibility Checker, please visit the new documentation website.

If you look for an information about very old versions of CKEditor, FCKeditor and CKFinder check also the CKEditor forum, which was closed in 2015. If not, please head to StackOverflow for support.


Currently, any of the following browsers is required for CKFinder to run:

  • Google Chrome
  • Firefox
  • Internet Explorer 8+
  • Safari
  • Opera
important note

Some features depend on your browser settings. CKFinder should work in any of the browsers listed above with their default settings enabled. If you are experiencing problems with the Context Menu or your Settings are not being saved, make sure that your browser is configured to "allow scripts to replace context menus" ("allow scripts to receive right clicks") and that you have "cookies support enabled".

Please contact your system administrator if you have any doubts.


CKFinder for ASP is designed to run in IIS versions 5 and 6, with no need of any extra component for its basic functionality, except for image manipulation.

In order to create thumbnails or restrict image dimensions, one of the following options must be available:

  • ASP.NET 1.1 or 2.0. If the .NET Framework is available on the server and enabled in IIS, and both the ASP and ASP.NET runtimes have write access to the Windows temporary folder, it will be used automatically. This is the recommended solution.
  • AspJpeg component from Persits Software Inc. Not distributed with CKFinder.
  • ASPImage 2 component from ServerObjects. Not distributed with CKFinder.
  • ASPThumb component from BRIZ Software. Not distributed with CKFinder.
This page was last edited on 26 April 2011, at 12:25.