Opening FIM Files

The FIM file type is primarily associated with Pegasus Mail.

FIM	File extension: FIM
	File type:	data file

What is a FIM file

FIM files mostly belong to Pegasus Mail. FIM files are not a single standard but a label for several internal file formats used in different systems. They serve several specific purposes:
Filtered Internet Mail:

This type stores mail filtering data – for example, the Pegasus Mail Filter File holds rules and criteria for processing incoming messages.

CAD Model Files:

Used by design systems like FrameCad, these files save structural or model data. More details are available at the FrameCad website.

FITS Image Files:

Sometimes the file uses the TIFF structure to store FITS image data, a format common in astronomical and scientific imaging. Additional info can be found at the NASA FITS page.

Financial Information Management:

This version contains structured financial data, often linked to systems like Forcepoint FIMware.

FORM.EXE Form Data Files:

These files save data for forms created in applications such as FormTool and processed by systems like FormFlow Filler.

FilExt.com tip: Each file’s internal structure depends on the originating software, so to open or view a FIM file, it is best to use the native application that created it.

How to open FIM files

You need a suitable software like Pegasus Mail to open a FIM file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your FIM file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a FIM file directly in the browser:. Just drag the file onto this browser window and drop it.

Online FIM Text Viewer

Choose your .fim file to analyze

or drag and drop it here

Online File Viewer

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Programs that open and convert FIM files:

Pegasus Mail
See the previous paragraphs to learn more about the main application. FIM files are often referred to as Pegasus Mail data files because this type of file is primarily created or used by this software.
Construsyc/Instasyc File
Fractal Imaginator (Data/Parameter File) by Mystic Fractal
Fractal Imaginator is a program for generating fractal images.
Paul van Keep's Icon Heaven
The identifying characters used for this association are - Hex: 4C 49 00 01 00 00 00 00, ASCII: LI.

FIM file format details:

Every file has a defined file format, i.e. how the data is arranged in the file. The first characters in a file identify the file format, for example, HTML files start with the bytes <html>. If the file extension or signature does not match the file format, errors will occur when opening or editing the file. Knowledge is power - this also applies when dealing with unknown or faulty files. Our examination of the FIM files comes to the following conclusion:

The FIM file extension is rarely used and covers a large number of different file formats. The following file formats are most commonly found in FIM files:

15% of all FIM files use the same file format, which have the signature /filter/TEMP/. These files are not pure binary files and are therefore readable and interpretable with a text editor. The average file size is 15 KB with most files being between 4 KB and 77 KB in size. The files contain the following words: 177776, /filter/TEMP/FILTER.BAK, /filter/TEMP/REGULAR.BAK and 331 0 7470. The file name filter.fim is typical for these files.
10% of all FIM files have the same signature FC AD 01. These are binary files, so they do not contain words or text. The files are often between 780 bytes and 14 KB in size.

All other FIM files (75%) have no uniform format, often e.g. FaceGen UV remapping transform, Flipper Zero Application Installation Manifest and TIFF. Tagged as prod or head. Drag & drop your file here to see the file format and a preview of your FIM file!

Technical Data for FIM File Extension

File classification:

Data

Related files:

fits, cad, fin, form, rim, pfm, idx, avro, zip, dat, cfg, xml

Mime type:

application/octet-stream

a fim data file is a special file format and should only be edited and saved with the appropriate software.

How to solve problems with FIM files

Associate the FIM file extension with the correct application.
Update your software that should actually open data files. Because only the current version supports the latest FIM file format. Search, therefore, e.g. on the manufacturer website after an available Pegasus Mail update.
To make sure that your FIM file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
Click here to open your .FIM file online - secure, fast, and no downloads needed.