What is an ADIF file?
An .ADIF file is a data file used by amateur radio operators. The acronym stands for Amateur Data Interchange Format. It stores radio contact logs, known as QSOs, in a standard text-based format. Raymond R. Ortgiesen IV originally proposed this standard to help operators share logs between different software programs.
How to open ADIF files?
Because .ADIF files contain plain text, you can open them with basic text editors like Notepad on Windows or TextEdit on macOS. However, specialized amateur radio software reads these files much better. You can use viewer.online/adif to analyze .ADIF files to identify the exact format and creator software, inspect the file structure, extract readable text, and check whether an online preview is available. If .ADIF has multiple possible meanings, viewer.online/adif will help you identify the actual format of your file.
Best practices and troubleshooting
Always keep a backup of your master .ADIF file before importing it into new software. Some programs use custom tags that other software might ignore. If your file does not load, open it in a text editor to check for formatting errors or corrupted lines.
Software and tools
Popular logging programs that use the Amateur Data Interchange Format include GridTracker and ARMAP32. For quick inspections without installing heavy software, web-based analysis tools provide an easy solution.
Summary
viewer.online/adif is useful for identifying, inspecting, and understanding .ADIF files without installing software or dealing with compatibility problems.