.FLX File Extension

2 file types use the .flx file extension.

FelixCAD Drawing

Developer Graebert
Popularity
2.7  |  7 Votes
 

What is an FLX file?

An FLX file is a CAD drawing created with FelixCAD, a discontinued computer-aided design and drafting program. It contains vector-based drawing data used to create technical drawings, such as plans, diagrams, and other designs. FLX files can store the geometric information and other drawing data FelixCAD needs to display and edit a design.

More Information

Users create FLX files with FelixCAD when producing technical drawings for architectural, engineering, manufacturing, and other design-related projects. The files are primarily associated with FelixCAD and may be encountered in older CAD projects created with the software.

NOTE: Since FelixCAD is no longer developed, FLX files have become uncommon.

How to open an FLX file

You can open FLX files with Graebert FelixCAD on Windows. However, the software has been discontinued.

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Programs that open FLX files

Windows
Category: CAD Files
Updated: September 3, 2026

FLIC Animation

Developer Autodesk
Popularity
2.5  |  4 Votes
 

An FLX file may also be an animation saved in a variation of the FLIC format. It may have been created by Mathematica Tempra Pro or Autodesk 3ds Max. While both programs can save animations in the FLX format, FLX files produced by each app are slightly different.

More Information

FLX files are a variant of .FLC files. All FLX files use up to 32,768 RGB colors and RLE compression. Instead of storing complete information for each frame, FLX files store only the information that changes between frames, to reduce file size.

How to open an FLX file

You can open an FLX file with Corel VideoStudio (Windows), Apple QuickTime Player (Mac), or XAnim (Linux). You may have to change the file's extension to .flc before you can open it.

Programs that open FLX files

Windows
Tempra Pro
Mac
Included with OS

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