Withdata DataFileConverter converts plain text files to YAML locally — single file, batch, or merge multiple TXT files into one YAML. Delimited or fixed-width — both are supported. 100% local, secure, and cross-platform.

Plain text files can be unstructured, delimited, or fixed-width.

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Why Choose Withdata TXT to YAML Converter?

🔒 100% Local & Secure

TXT files are read and converted on your own computer. Nothing is uploaded to any cloud server.

⚡ Fast Streaming Conversion

Large TXT files are processed in streaming mode with low memory usage — millions of rows within a minute.

📁 Batch & Merge

Batch convert many TXT files to YAML files, or merge multiple TXT files into one YAML.

🔄 Nested YAML → Dotted Columns

Nested mappings become address.city-style column names; sequences and block scalars are expanded automatically.

🖥 Windows, macOS, Linux

Native builds for Windows, macOS and Linux, with a step-by-step GUI wizard and a command line interface.

⏱ CLI & Scheduled Tasks

Save a conversion session and run it automatically from Windows Task Scheduler or crontab.

Full Feature Comparison

Feature	Supported details
Input source	Local text files, batch text files, merged text files
Output format	YAML with configurable indent (default 2) and flow style
Conversion mode	Single file · merge many TXT files into one YAML · batch (one to one)
Running mode	GUI wizard · command line · scheduled tasks
Source options	Delimiter or column widths, quote character, header row, start row, encoding
Output options	Column mapping, encoding, date format, empty value handling
Platform	Windows, macOS, Linux (native, 64-bit)

All TXT to YAML Conversions You Need

Single TXT file → YAML file, step by step in the GUI wizard
Batch convert multiple TXT files → multiple YAML files
Merge multiple TXT files into one YAML — merge tool
Convert TXT to YAML in the command line, and run it as a scheduled task
All TXT conversion tools and all YAML conversion tools

TXT to YAML Notes

Text can be parsed as delimited (by a delimiter character) or as fixed-width (by column widths).
Line breaks, quoting and the encoding can be configured.
A header row is optional; leading rows can be skipped.
The output indent can be set (2 spaces by default).
Flow style ({ } / [ ]) can be enabled or disabled.
Dotted column names can be written back as nested YAML mappings.

How to Convert TXT to YAML (4 Steps)

Open Withdata DataFileConverter and select TXT as the input type and YAML as the output type.
Load your TXT data — a single file, a folder / list of files for batch conversion, or several files to merge into one.
Check the preview table, then adjust the source options and the output options.
Click Convert — the YAML output is written in seconds. Save the session if you want to run it again from the command line.

Convert TXT to YAML in GUI

In GUI mode the conversion is a step-by-step wizard: choose the TXT source, choose the YAML destination, check the preview, and click Convert. See Withdata DataFileConverter.