.GMAP File Extension
File Type 1Garmin Map File
What is a GMAP file?
Map bundle used by some Garmin navigation devices; saves a map of specific regions in the world (e.g., City Navigator North America); can be used with PC and Mac software such as Garmin BaseCamp and MapInstall, as well as with Garmin devices.
Programs that open GMAP files
File Type 2Google My Maps Shortcut
.GMAP File Association 2
A GMAP file is a shortcut used to open a map created in Google My Maps and saved within Google Drive. The file contains a reference to the map it opens, as well as the Gmail account used to create the map. GMAP files are created by Backup and Sync from Google.
Backup and Sync from Google is a program that allows Google Drive users to back up and open their Google Drive files on Windows and Mac PCs. While Backup and Sync stores actual backups of some types of files (such as .JPG and .DOCX files) on users' computers, it does not store copies of files created using Google My Maps, Docs, and other Google Workspace applications. Instead, Backup and Sync stores shortcut files that, when double-clicked, open the associated file in the web version of the correct Google Workspace application.
GMAP files are Backup and Sync shortcuts that open maps created in Google My Maps. When a Backup and Sync user double-clicks a GMAP file, the related map opens in Google My Maps, provided the user is signed in to a Gmail account allowed to access the map. Each GMAP file is a JSON file that contains a map's URL and document ID, as well as the name of the Gmail account used to create the map.
How do I open a GMAP file?
If you have Backup and Sync from Google installed on your PC, or you are using a Chrome OS device, you can double-click a GMAP file to open the map it references in Google My Maps. You may have to sign in to your Gmail account or request access to the map to open it.
If necessary, you can also open a GMAP file in any text editor to view the URL, document ID, and Gmail account information it contains. You may want to do this, for example, if you are having trouble using your GMAP file to open a map in Google My Maps. If double-clicking your GMAP file does not open a map, you can try copying and pasting your file's URL into your web browser to access your map.