Extract text from FormFusion scripts (FSI)
To convert FSI scripts to another format, you need FormFusion or other Data software.
To convert other file formats to the "Integration Script or Package" file type, you need software like FormFusion or a similar tool.
The .FSI file format serves several distinct, highly specialized purposes depending on the software that created it. Most commonly, it functions as a FormFusion script integration file utilized by Formtran FormFusion. Under the hood, these files use the proprietary Microsoft Compound file structure to store document layout rules and database integration scripts. Another significant use case is as an Automation device software package for the Festo Automation Suite, which utilizes a standard ZIP container to hold CODESYS automation configuration files. Additionally, .FSI files act as proprietary Accounting and payroll data files in Facilito Sistema Integrado or as plain text Visual F# Signature Files for Microsoft Visual Studio.
Users often need to convert or inspect .FSI files because they lack the specific enterprise software required to open them. A major disadvantage of these formats is their extreme proprietary lock-in. For example, without a licensed installation of FormFusion or Festo, the contents remain inaccessible in standard office applications. Sharing these files with clients or colleagues who do not run the exact same software version frequently causes workflow bottlenecks and delays.
Converting .FSI files depends entirely on their underlying data structure. Festo Automation packages can often be easily bypassed: simply rename the extension to ZIP and extract the contents to access the raw internal files. Visual F# Signature files are plain text and can be edited in any code editor or safely converted to TXT. However, FormFusion files and Facilito accounting databases are deeply proprietary. Converting them to universal formats like PDF or CSV usually requires exporting directly from the original host software; otherwise, complex relational data, formatting, and logic scripts will be destroyed.
This file format is notoriously difficult to open or convert because it acts as a specialized container rather than a standard document. Standard online converters fail because they do not understand the specific Microsoft Compound schemas or Festo's internal CODESYS directory structures. Often, only the original software can properly read or export the data. However, convert.guru can still identify the file format, inspect the file, and show text or internal content. Just drag and drop your file to see what it is and convert it if supported. If our analysis detects a supported underlying or embedded format, viewing or conversion may still be possible.
Convert.Guru analyzes your FSI file, detects the exact format, and lets you read the text inside.
Users also converted PDF, 10, 22 and MKA files.
If you want to convert FSI file to JS, TS, PY, JAVA, CPP, C, CS, PHP, RB, GO, RS or SWIFT, you can use FormFusion or similar software from the "Script Integration or Automation Package" 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 FSI, try FormFusion or another comparable tool in the "Script Integration or Automation Package" category.
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 FSI converter.