L01 File Extension

What is L01 file?

Files with the extension L01 belong to the category of map files.

What do L01 files contain?

L01 files contain raster maps that are supported by software called ARC Digitized Raster Graphics. Originally used by the military in the early '90s, these files store digital versions of maps, as well as charts and other data necessary for the system's proper functioning.

How are L01 files used?

Files with the L01 extension were used in software that facilitated convenient navigation on digital maps. This software divided the globe into 18 sectors. Thanks to innovative algorithms, maps from L01 files were seamlessly stitched together, so the user could scroll the image without any interruptions. L01 files contained maps where each pixel had a specified geographical position. This allowed for the free zooming of maps from L01 files, as well as the application of layers and adding comments to designated map sections.

Programs which support L01 file extension

Below is a table that list programs that support L01 files. L01 files can be encountered on all system platforms, including mobile, yet there is no guarantee each will properly support such files.

Updated: 03/10/2024

How to open file with L01 extension?

There can be multiple causes why you have problems with opening L01 files on given system. What is important, all common issues related to files with L01 extension can be resolved by the users themselves. The process is quick and doesn’t involve an IT expert. The following is a list of guidelines that will help you identify and solve file-related problems.

Step 1. Install Global Mapper software

The most common reason for such problems is the lack of proper applications that supports L01 files installed on the system. The solution is straightforward, just download and install Global Mapper. Above you will find a complete listing of programs that support L01 files, classified according to system platforms for which they are available. If you want to download Global Mapper installer in the most secured manner, we suggest you visit Global Mapper Software LLC website and download from their official repositories.

Step 2. Check the version of Global Mapper and update if needed

You still cannot access L01 files although Global Mapper is installed on your system? Make sure that the software is up to date. Software developers may implement support for more modern file formats in updated versions of their products. This can be one of the causes why L01 files are not compatible with Global Mapper. The latest version of Global Mapper should support all file formats that where compatible with older versions of the software.

Step 3. Set the default application to open L01 files to Global Mapper

After installing Global Mapper (the most recent version) make sure that it is set as the default application to open L01 files. The method is quite simple and varies little across operating systems.

Change the default application in Windows

• Clicking the L01 with right mouse button will bring a menu from which you should select the Open with option
• Select Choose another app → More apps
• Finally select Look for another app on this PC, point to the folder where Global Mapper is installed, check the Always use this app to open L01 files box and conform your selection by clicking OK button

Change the default application in Mac OS

• From the drop-down menu, accessed by clicking the file with L01 extension, select Information
• Find the Open with option – click the title if its hidden
• From the list choose the appropriate program and confirm by clicking Change for all....
• If you followed the previous steps a message should appear: This change will be applied to all files with L01 extension. Next, click the Continue button to finalize the process.

Step 4. Verify that the L01 is not faulty

You closely followed the steps listed in points 1-3, but the problem is still present? You should check whether the file is a proper L01 file. Being unable to access the file can be related to various issues.

1. Check the L01 file for viruses or malware

Should it happed that the L01 is infected with a virus, this may be that cause that prevents you from accessing it. Scan the L01 file as well as your computer for malware or viruses. If the L01 file is indeed infected follow the instructions below.

2. Verify that the L01 file’s structure is intact

If the L01 file was sent to you by someone else, ask this person to resend the file to you. During the copy process of the file errors may occurred rendering the file incomplete or corrupted. This could be the source of encountered problems with the file. It could happen the the download process of file with L01 extension was interrupted and the file data is defective. Download the file again from the same source.

3. Check if the user that you are logged as has administrative privileges.

Some files require elevated access rights to open them. Log in using an administrative account and see If this solves the problem.

4. Verify that your device fulfills the requirements to be able to open Global Mapper

If the system is under havy load, it may not be able to handle the program that you use to open files with L01 extension. In this case close the other applications.

5. Check if you have the latest updates to the operating system and drivers

Up-to-date system and drivers not only makes your computer more secure, but also may solve problems with ARC Digitized Raster Graphics Format file. It is possible that one of the available system or driver updates may solve the problems with L01 files affecting older versions of given software.

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