Projects / Dia


Dia is a program for creating diagrams of all kinds. The current version can do UML class diagrams, Entity-Relationship modeling, network diagrams, and much more. The engine is very flexible and dynamically loads diagram-types from disk. It stores diagrams in an XML format, but can read and write a number of different formats.


Recent releases

  •  27 Dec 2011 15:43

    Release Notes: A lot of translations were updated. Several bugs have been fixed in this release. More colors have been added to SADT.

    •  01 Jun 2009 09:28

      Release Notes: An integrated UI is available with "dia --integrated". The Cairo renderer has been improved, including anti-aliasing and printing. A Find and Replace feature was added. Text editing mode was improved. A custom lines plug-in was added. Shapes can have sub-shapes and default sizes. Start-up time and memory usage were reduced through delayed shape loading. Rotated text is supported. The DXF plug-in was improved. Dia supports EMF on Linux. Database table shapes were added. Grouped objects property handling was improved. Arrow bounding box calculations were improved. The "UML - Class" dialog fits on 800x600 screens. SWIG/C++ bindings were added.

      •  04 Dec 2008 21:38

        Release Notes: Text-line rendering in SVG export. Keyboard shortcuts for tools now use shift-alt. Improvement in autogaps for some objects. The .desktop file now has the current version. A change in zoom levels in menus. A check that windows are within bounds before opening. Various compilation-time improvements. UML class improvements in comment and wrapped underlined names. Many bugfixes.

        •  25 Aug 2004 15:45

          Release Notes: New additions include highlighting when connecting objects, connectability between layers, hexagonal grids, several new shape sets (RDP, KAOS, I*, Jackson, ChemEng), two new renderers (WMF for non-Windows and Cairo), rounded corners on polylines, persistence of a number of settings, and a new arrow head. The modification status was improved to use unod. UML objects were improved with text wrapping and label positioning. A host of random persistence systems were combined into one. Fixes were made for memory leaks, a shape compatibility bug, dialog closing problems, and many smaller bugs.

          •  04 May 2004 19:52

            Release Notes: Text-rendering is faster due to a Pango layout cache. The Win32 version now also uses Freetype2 rendering, allowing more unified appearance and antialiasing. Arrow head size selection now keeps aspect ratio by default. A navigation window has been added to the lower-right corner. UML objects can now have color. Dia can now convert objects without requiring X. Pre-edit text input is much improved. Shapes can now have extra properties, shown only in the dialog. There are new arrows, sheets, XSLT filters, and more. Many bugs and leaks are fixed, and there are other minor improvements.

            Recent comments

            28 Dec 2011 11:03 djzort

            check out some shapes at...



            08 Sep 2006 20:08 jfz

            Thanks for not restricting this.
            Just wanted to say thanks for making such a useful

            tool and not restricting it to KDE /GNOME.

            02 Feb 2006 06:52 allgaeutobias

            How to Set a Scale (e. g. 1:50)?

            Iím new to Dia.

            It looks very good. Congratulations to the developers!

            Iíd like to draw up a building plan and havenít found a way to set the scale of the canvas (e. g. 1:50).

            Can anyone shed some light on this?



            25 Feb 2005 21:07 parubok

            Latex labels in dia
            I love dia, but I have to switch to some other editors such as ipe and xfig when I need good looking latex-style labels on my diagrams. Dia would be golden if it had the same option.

            13 Jun 2004 03:39 spacetux

            DIA for Windows
            Hi All!

            Dia is an excellent tool to create diagrams. I had some trouble first to put these diagrams into my Word (Office XP) documents, but when you install Adobe's SVG viewer plugin and export your diagrams to the SVG format, you get excellent scalable diagrams!

            At the moment of writing:


            PS. For Java UML Diagramming I prefer Jude! Go check it out!


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