There are 2 other file types using
the BLL file extension!

empty icon.bll - Borland Delphi localization Information

empty icon.bll - VBS/European-A worm file

Detailed description

Software that open bll file

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BLL file extension - ENVI bad lines list

What is bll file? How to open bll files?

File type specification:

Various data file type icon Various data file type

The BLL file extension is associated with ENVI and used for files that contain bad lines list data.

The default software associated to open bll file:

ENVI picture or screenshot

Exelis Visual Information Solutions logoENVI  Microsoft Windows software

Company or developer:
Exelis Visual Information Solutions

ENVI is a software solution used to process and analyze geospatial images. Application is used by scientists, researchers, image analysts, and GIS professionals. ENVI software combines the latest spectral image processing and image analysis technology with an intuitive, user-friendly interface to help you get meaningful information from imagery.

Help how to open:

Due the variability and uncertainty of this file type group, there is no general information available, about how to open this various data file format. However most files with extension from this group are usually not meant to be opened or viewed directly. If there are associated applications or programs listed below the extension description, you can always try to check their website for additional informations on their forums or other type of customer support.

For general information try to look at:
Identifying unknown file formats

How to convert:

Due the variability and uncertainty of this file type group, there is no general information available, about how to convert this various data file format. However most files with extension from this group are usually not in formats, which can be converted. If there are associated applications or programs listed below the extension description, you can always try to check their website for additional informations on their forums or other type of customer support.

List of recommended software applications associated to the .bll file extension

Recommended software programs are sorted by OS platform (Windows, macOS, Linux, iOS, Android etc.)
and possible program actions that can be done with the file: like open bll file, edit bll file, convert bll file, view bll file, play bll file etc. (if exist software for corresponding action in File-Extensions.org's database).

Unspecified and all other actions for computer programs working with bll file - ENVI bad lines list

Click on the software link for more information about ENVI. ENVI uses bll file type for its internal purposes and/or also by different way than common edit or open file actions (eg. to install/execute/support an application itself, to store application or user data, configure program etc.).

Microsoft Windows:

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