AN1 File Extension
DeLorme Street Atlas Drawing Format
- File Type an1
- Developer DeLorme
- Popularity
- Application Street Atlas USA
- Category GIS Files
What is a AN1 file?
The AN1 file extension is linked to DeLorme Street Atlas Drawing Format and belongs to the GIS Files category, which includes 247 files.
The DeLorme Street Atlas Drawing Format (AN1) was developed by DeLorme, which created file format and 3 programs to work with them.
AN1 file support extends to various operating systems, including Windows, Linux and Mac OS. To open a AN1 file, you can choose from 3 programs such as Street Atlas USA, Xmap and GPSBabel.
Programs that support AN1 files
How to open a AN1 file?
If you cannot open a AN1 file, it is most often due to missing software. Select a program from the list according to your operating system. Then go to the official website of the program developer, download it, and install it on your device.
When it comes to opening and working with AN1 files, Street Atlas USA, Xmap and GPSBabel are the top choices for users. To install the updated version of Street Atlas USA, simply go to the DeLorme site and download the installer compatible with all major platforms.
Once installed, Street Atlas USA will be set as the default program, and AN1 files will open automatically.
Set Street Atlas USA as the default AN1 program
Changing Default Programs in Windows
- Right click on your AN1 file, then select "Open with" and click "Choose another application";
- In the pop-up window, select the Street Atlas USA application;
- Check the "Always use this application" checkbox, and then click "OK" to apply the selected application as the default for opening AN1 files.
Change Default Program on Mac
- Right click or Control + left click on the desired AN1 file;
- Select "Open in application" and click "Other";
- At the bottom of the window, find the "Enable" menu, where "Recommended Programs" is already selected by default;
- Within this menu, select "All Programs" and then locate Street Atlas USA. Check the box next to "Always open in app" to set it as the default program.
How to edit a AN1 file?
To edit AN1 files, it is essential to install software that supports not only viewing but also editing the gis files. Online AN1 editors provide limited functionality compared to full-featured software for DeLorme Street Atlas Drawing Format.
Best AN1 editors in 2026
Considering the mentioned criteria, we have compiled a list of AN1 editors that may suit your needs.
| AN1 Editor Software | Developer | Platforms | Overall Rating |
|---|---|---|---|
| Street Atlas USA | DeLorme | Windows | 4.4 out of 5 (40 reviews) |
| Xmap | DeLorme | Windows | 4.3 out of 5 (43 reviews) |
Solve problems with AN1 files
Certain problems with AN1 files can be conveniently fixed with small software tweaks. Here are some helpful tips to address them.
Why does Street Atlas USA stop responding or crash intermittently?
The likely cause of Street Atlas USA crashing is lack of software updates. Install the latest updates available for DeLorme products.
Restarting your computer will solve many common problems, which is why it’s the first thing you should do before changing any settings related to the software.
What are the best practices for repairing a AN1 file that has gone bad?
Open the corrupted AN1 file in a recovery program and select the "Repair" menu item. Please be patient while the recovery process completes, which will automatically restore the damaged gis files.
How do I know if my AN1 file is corrupted?
Common indications of damaged AN1 gis files are:
- Attempts to open the file result in errors or failed results;
- Editing the archive in Street Atlas USA results in slow or unresponsive behavior;
- The file causes Street Atlas USA or other programs to hang or crash during operation;
- Unexplained increase in AN1 file size;
- Error messages appear while working with the file;