Withdata DataFileConverter converts TSV files to Fixed-Width Text locally — single file, batch, or merge multiple TSV files into one Fixed-Width Text. 100% local, secure, and cross-platform.
TSV (tab-separated values) is a tab-delimited tabular text format.
TSV files are read and converted on your own computer. Nothing is uploaded to any cloud server.
Large TSV files are processed in streaming mode with low memory usage — millions of rows within a minute.
Batch convert many TSV files to Fixed-Width Text files, or merge multiple TSV files into one Fixed-Width Text.
Define the width of every column (N columns need N-1 widths). No delimiter and no quoting are needed.
Native builds for Windows, macOS and Linux, with a step-by-step GUI wizard and a command line interface.
Save a conversion session and run it automatically from Windows Task Scheduler or crontab.
| Feature | Supported details |
|---|---|
| Input source | Local TSV, batch TSV, merged TSV |
| Output format | Fixed-width text with detected or custom column widths |
| Conversion mode | Single file · merge many TSV files into one Fixed-Width Text · batch (one to one) |
| Running mode | GUI wizard · command line · scheduled tasks |
| Source options | Quote character, header row, start row, encoding |
| Output options | Column mapping, encoding, date format, empty value handling |
| Platform | Windows, macOS, Linux (native, 64-bit) |
In GUI mode the conversion is a step-by-step wizard: choose the TSV source, choose the Fixed-Width Text destination, check the preview, and click Convert. See Withdata DataFileConverter.
After converting TSV to Fixed-Width Text in GUI, and saving the "TSV to Fixed-Width Text" session, you can run it from the command line:
After converting TSV to Fixed-Width Text in the command line, you can schedule and automate the "TSV to Fixed-Width Text" conversion:
Download Withdata DataFileConverter for a free trial. Runs on Windows, macOS and Linux.