Click the "Select File" button above, and choose your LUF file.
You’ll see a preview, if available.
Click the "Convert file to..." button to extract text information.
Convert LUF to another file type
To convert LUF documents to another format, you need Lipikar or other Text software.
Convert a file to LUF
To convert other file formats to the "Legacy Document / Update Container" file type, you need software like Lipikar or a similar tool.
About LUF files
The .luf extension primarily serves two distinct purposes that often confuse users.
Lipikar Uniform Format: This is a legacy text document format created by the Lipikar authoring tool. It functions essentially as a Rich Text Format (RTF) wrapper, storing formatted text and layout data. Users typically encounter friction here because Lipikar software is obscure and often incompatible with modern operating systems (Windows 10/11), leaving valuable documents locked in an unreadable format.
Language Update File: In industrial automation and niche software contexts - specifically with Siemens LOGO! Soft Comfort and LunaFL devices - a .luf file is a strictly formatted container (often internally a ZIP archive) used to install new language packs or localization strings.
Conversion Advice:
For Lipikar Files: The goal is to migrate the content to accessible formats like DOCX (Word) for editing or PDF for archiving. Since the underlying structure is similar to RTF, conversion restores access to the text.
For Siemens/LunaFL Files: These are not meant to be "opened" in a text editor. If you need to inspect the contents, changing the extension from .luf to zip often allows you to extract the internal XML or resource files, though this is primarily for developers debugging localization issues.
Convert.Guru analyzes your LUF file, detects the exact format, and lets you read the text inside.
If you want to convert LUF file to , you can use Lipikar or similar software from the "Text Documents & Language Packs" category. In the File menu, look for Save As… or Export….
To convert files to LUF, try Lipikar or another comparable tool in the "Text Documents & Language Packs" category.
The LUF Converter Story
The history of Convert.Guru began over 25 years ago in California with Tom Simondi’s file-format database. A former contributor to Space Shuttle development and a software pioneer of the 1980s, Simondi established a trusted resource for file type analysis that was even referenced by Microsoft Windows XP. Today, we use modern technology to process and convert thousands of file formats while continually improving our LUF converter.