What is a BTR file?
A .BTR file is most commonly a Btrieve Database File. These files use a transactional database structure to store business data. Developers originally used software from Pervasive Software (which is now Actian) to create and manage them. Today, business accounting tools like Sage 50 often use .BTR files to store financial records safely. A .BTR file can also function as a B-tree index file or a legacy Microsoft FrontPage component.
Alternative uses for BTR files
Because .BTR has multiple possible meanings, it is not always a database. Some .BTR files contain game terrain LOD (Level of Detail) data for games created by Bethesda Game Studios. Modders use community tools like LODGen to generate these files. Other .BTR files are simple UTF-8 text files used as photovoltaic battery definition files in PVsyst.
How to open BTR files?
Opening a .BTR file usually requires the specific software that created it. For database files, you might need Actian Zen (formerly Pervasive PSQL) or Sage 50. For game terrain files, you need specific modding utilities, and for solar battery definitions, you must import the file into PVsyst.
Inspect and view BTR files online
If you do not know which application created your file, viewer.online/btr can analyze .BTR files to identify the exact format and creator software. You can inspect the file structure, extract readable text, and check whether an online preview is available.
Summary
viewer.online/btr is useful for identifying, inspecting, and understanding .BTR files without installing software or dealing with compatibility problems.