Click the "Select File" button above, and choose your LLB file.
You’ll see a preview, if available.
Click the "Convert file to..." button to extract text information.
Convert LLB to another file type
To convert your LLB file to another format, you need LabVIEW or other Developer software.
Convert a file to LLB
To convert other file formats to the "Instrumentation Library Container" file type, you need software like LabVIEW or a similar tool.
About LLB files
The .LLB file extension is primarily a LabVIEW Library, a proprietary container format developed by National Instruments. Functionally, it acts like a ZIP archive specifically designed to bundle multiple Virtual Instruments (reference .VI files) and controls into a single binary blob.
While convenient for simple distribution, .LLB files are a notorious headache for modern development: they are monolithic binary files that make version control (Git/SVN) impossible, as you cannot diff changes between versions. Furthermore, a single corrupted byte can render the entire library of instruments unreadable. Users frequently need to convert .LLB files into standard Directories (Folders) or modern .LVLIB Project Libraries to regain access to individual source files, fix broken links, or migrate legacy code to new LabVIEW versions.
A secondary, less common use is as a PCB Layout Library for older versions of OrCAD, storing footprint and component data for circuit board design.
Convert.Guru analyzes your LLB file, detects the exact format, and lets you read the text inside.
If you want to convert LLB file to STONE, JD, JS, TS, PY, JAVA, CPP, C, CS, PHP, RB or GO, you can use LabVIEW or similar software from the "Virtual Instrument Library Storage" category. In the File menu, look for Save As… or Export….
To convert SH, PY, KT, PS1, SWIFT, LUA, PL, JAVA, SCALA, JS, VBS or TS files to LLB, try LabVIEW or another comparable tool in the "Virtual Instrument Library Storage" category.
The LLB 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 LLB converter.