| .F4A | Adobe Systems Incorporated | Lydfiler | Adobe Flash Protected Audio File | Adobe Flash Player | Adobe Systems Incorporated |
| .F4B | Adobe Systems Incorporated | Lydfiler | Adobe Flash MP4 Audio eBook File | Adobe Flash Player | Adobe Systems Incorporated |
| .F4F | Adobe Systems Incorporated | Datafiler | Adobe HTTP Dynamic Streaming Segment | Adobe Flash Player | Adobe Systems Incorporated |
| .F4M | Adobe Systems Incorporated | 3D-billedfiler | Adobe Flash Media Manifest File | Adobe Media Server | Adobe Systems Incorporated |
| .F4P | Adobe Systems Incorporated | Videofiler | Adobe Flash Protected Media File | Adobe Flash Player | Adobe Systems Incorporated |
| .F4V | Adobe Systems Incorporated | Videofiler | Flash MP4 Video File | Adobe Flash Player | Adobe Systems Incorporated |
| .F4X | Adobe Systems Incorporated | Videofiler | Adobe HTTP Dynamic Streaming Index File | HTTP Dynamic Streaming | Adobe Systems Incorporated |
| .FAX | Interscape | Sideopsætningsfiler | Now Contact Fax Template | Adobe Photoshop Elements | Adobe Systems Incorporated |
| .FDF | Adobe Systems Incorporated | Tekstfiler | Acrobat Forms Data Format | Adobe Acrobat DC | Adobe Systems Incorporated |
| .FDS | Adobe Systems Incorporated | Datafiler | JetForm FormFlow Data File | JetForm FormFlow | Adobe Systems Incorporated |
| .FFF | Hasselblad | Kamera Ubehandlede Filer | Hasselblad RAW Image | Adobe Photoshop Elements | Adobe Systems Incorporated |
| .FFO | Microsoft Corporation | Systemfiler | Find Fast Document Properties Cache | Adobe Photoshop | Adobe Systems Incorporated |
| .FFT | Adobe Systems Incorporated | Plug-in-filer | Adobe Audition Noise Print File | Adobe Audition | Adobe Systems Incorporated |
| .FFX | Adobe Systems Incorporated | Indstillingsfiler | After Effects Preset File | Adobe After Effects | Adobe Systems Incorporated |
| .FH | Adobe Systems Incorporated | Vektorbilledfiler | Adobe FreeHand Image | Adobe FreeHand | Adobe Systems Incorporated |
| .FH10 | Adobe Systems Incorporated | Vektorbilledfiler | FreeHand 10 Drawing File | Adobe Illustrator CC | Adobe Systems Incorporated |
| .FH11 | Adobe Systems Incorporated | Vektorbilledfiler | FreeHand 11 Drawing File | Adobe Illustrator CC | Adobe Systems Incorporated |
| .FH3 | Adobe Systems Incorporated | Vektorbilledfiler | FreeHand 3 Drawing File | Adobe Illustrator CC | Adobe Systems Incorporated |
| .FH6 | Adobe Systems Incorporated | Vektorbilledfiler | FreeHand 6 Drawing File | Adobe FreeHand | Adobe Systems Incorporated |
| .FH7 | Adobe Systems Incorporated | Vektorbilledfiler | Adobe FreeHand 7 Drawing File | Adobe Illustrator CC | Adobe Systems Incorporated |
| .FH8 | Adobe Systems Incorporated | Vektorbilledfiler | FreeHand 8 Drawing File | Adobe Illustrator CC | Adobe Systems Incorporated |
| .FH9 | Adobe Systems Incorporated | Vektorbilledfiler | FreeHand 9 Drawing File | Adobe Illustrator CC | Adobe Systems Incorporated |
| .FHC | Canute LLP | Datafiler | FHC Data File | Adobe FreeHand | Adobe Systems Incorporated |
| .FHD | Adobe Systems Incorporated | Vektorbilledfiler | FreeHand Drawing File | Adobe FreeHand | Adobe Systems Incorporated |
| .FIF | OpenText Corp. | Vektorbilledfiler | Fractal Image File | Adobe Photoshop | Adobe Systems Incorporated |
| .FIO | Adobe Systems Incorporated | Indstillingsfiler | PhotoStyler Graphics Filter | Aldus PhotoStyler | Adobe Systems Incorporated |
| .FK | Flash-Integro LLC | Lydfiler | Flash Streamed Media File | Adobe Flash Player | Adobe Systems Incorporated |
| .FLA | Adobe Systems Incorporated | Udviklerfiler | Adobe Animate Animation | Adobe Animate CC 2017 | Adobe Systems Incorporated |
| .FLAC | Xiph.Org | Lydfiler | Free Lossless Audio Codec File | Adobe Audition | Adobe Systems Incorporated |
| .FLM | Image-Line | Lydfiler | FL Studio Mobile Song File | Adobe Scout | Adobe Systems Incorporated |
| .FLT | Presagis | 3D-billedfiler | OpenFlight Scene Description File | Adobe Audition | Adobe Systems Incorporated |
| .FLV | Adobe Systems Incorporated | Videofiler | Animate Video File | Adobe Animate CC 2017 | Adobe Systems Incorporated |
| .FM | Adobe Systems Incorporated | Sideopsætningsfiler | FrameMaker Document | Adobe FrameMaker | Adobe Systems Incorporated |
| .FMV | Safe Software | GIS-filer | FME Desktop Viewspace File | Adobe FrameMaker | Adobe Systems Incorporated |
| .FPK | Interscape | Spilfiler | Civilization 4 Data File | JetForm FormFlow | Adobe Systems Incorporated |
| .FPX | Kodak | Rasterbilledfiler | FlashPix Bitmap Image File | Adobe Lightroom CC | Adobe Systems Incorporated |
| .FRA | Electronic Arts | Spilfiler | FIFA World Cup Game Data | Adobe FrameMaker | Adobe Systems Incorporated |
| .FRAME | Adobe Systems Incorporated | Grafiske Filer | Adobe FrameMaker Interchange Format | Adobe FrameMaker | Adobe Systems Incorporated |
| .FRL | Adobe Systems Incorporated | Datafiler | Electronic Form Loader File | JetForm FormFlow | Adobe Systems Incorporated |
| .FRZ | Snes9x Team | Spilfiler | Snes9x Saved State | JetForm FormFlow | Adobe Systems Incorporated |
| .FT5 | Macromedia | Vektorbilledfiler | Macromedia Freehand Template | Adobe FreeHand | Adobe Systems Incorporated |
| .FT7 | Adobe Systems Incorporated | Vektorbilledfiler | FreeHand 7 Drawing Template | Adobe Flash Professional CC | Adobe Systems Incorporated |
| .FT8 | Adobe Systems Incorporated | Vektorbilledfiler | FreeHand 8 Template | Adobe Illustrator CC | Adobe Systems Incorporated |
| .FT9 | Adobe Systems Incorporated | Vektorbilledfiler | FreeHand 9 Drawing Template | Adobe Flash Professional CC | Adobe Systems Incorporated |
| .FXG | Adobe Systems Incorporated | Vektorbilledfiler | Flash XML Graphics File | Adobe Illustrator CC | Adobe Systems Incorporated |
| .FXP | Microsoft Corporation | Eksekverbare filer | FoxPro Compiled Program | Adobe Flash Builder | Adobe Systems Incorporated |
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