Unknown file extension
File type: Unknown file
A .nl_ file has an unidentified file format. No confirmed software association is available for this extension.
File type category:
Unknown file
Date updated: October 4, 2026
The contents and purpose of a .nl_ file cannot be determined from the extension alone. It is not documented here as a known format belonging to a specific application or vendor.
Because the associated software and format are unknown, the file's role, internal data, and current usage cannot be established reliably.
No specific program is known to open .nl_ files. Opening it with an unrelated application may display unusable data or damage the file.
The file should be identified from the software or source that created it before selecting an application.
A .nl_ file cannot be converted reliably while its format is unidentified. Conversion requires a program that recognizes the file's actual contents.
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