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The most advanced kmtf File Editor

Changing maps on NUVI & ZUMO devices FAST!


  From Garmin:

  'We had wanted to put something together to make it easier to build those themes, but time never allowed for it.  
  I am glad that someone took the initiative.'


Map Theme Maker is a very popular Editor of Garmin Map Themes (kmtf files) used on many Nuvi & Zumo devices and it's FREE with no junk to untick!

Quickly add new colours to your Maps!

Although not as powerful, map themes are similar to basic TYP files but lack the ability to edit POIs or create bitmaps.

Simple Download with NO JUNK to untick!

 Available Free

 checked for viruses & malware with:


 Run as Administrator


Change colours of Polygons

no need to know the hex !

Currently the maximum 16 polygons can be changed depending on your device.

 Registration details:

 Go Registration --> Add Key and enter



Change colours of lines and borders of Highways and other polylines .

Currently a maximum of 33 lines are available,
not all of them may be used by your device


Those who have downloaded Map Theme Maker

have also looked at :

How to get OSM pois, like speed cameras on your Nuvi or Zumo .

OSM POIS on your Nuvi/Zumo



1) 'Arrow' colours : change 'RTE_ACTIV_LEG'

2)Traffic 'lines' are generated by Garmin and cannot be customised.

To make lines stand out, make your polygons and highways darker.


All themes have the extension .kmtf / On many Nuvis they are found in a Themes/Maps folder.

The maps contain a maximum of 5 'Presentations' ( categories)

Guidance,Browse,Traffic,Turn Preview, Route Preview and Pedestrian

This means you can have your guidance and traffic maps look differently etc.

Some default map themes have only one Presentation. With Map Theme Maker you can quickly select and add/remove a presentation.

  Garmin informed us:

  'I think that you can safely ignore all of the presentations but the “Guidance” presentation.  
  Late in development, we decided to change directions and make all presentations of map use
  the same base theme.'


It appears that some lines have a bitmap although they cannot be altered by the user, ie

The notion of such lines having borders is somewhat confusing.

 Secure Download map theme maker setup 1.20

 Secure Download map theme maker manual

Windows 7/10 click here