Extensions: 'R'
| Format | Description | Author | File / Link |
|---|---|---|---|
| RAD | Reality Adlib Tracker | Shayde Rogue and Void | Download |
| RAR | RAR version 2.02 | Eugene Roshal | Download |
| RAR 2.00 Format | Koen Beets | Download | |
| RAS | Sun Rasterfile Format | LINK | |
| Sun Rasterfile Format | LINK | ||
| Sun Rasterfile Format | LINK | ||
| Sun Rasterfile Format | Download | ||
| RAW | RAW Sound format | Stuart Axon | Download |
| RAW graphics format | Edward Blake | Download | |
| RBS | ReBirth 2.0.1 Format | Dan Engelbrecht | Download |
| RDOFF | Relocatable object file format | Download | |
| RED ALERT | Red Alert file formats guide (.MIX, .RMT, .TMP, .PCX, .SHP, .DAT, .CPS) v1.4 | Gavin Pugh | Download |
| REG | Windows Registry Files system.dat and user.dat (and CONFIG.POL format) | Download | |
| Windows Registry File Format (ASCII .REG format) | Jeroen Mostert | Download | |
| RENDERMAN | RenderMan 3.1 specification | Pixar | LINK |
| RES | System Shock unofficial specs | LINK | |
| Win32 Resource File Format | Marco Cocco | Download | |
| Windows Resource (.RES) Files | Ray Lischner | Download | |
| REX | Pharlap Relocatable Executables example code (Watcom C/C++ 10.6) | Download | |
| RFF | Blood game data files | Matt Saettler | Download |
| RGB | RGB colour space pixel formats used in PC video | Dave Wilson | LINK |
| RGBE | RGBE File Format | LINK | |
| RIFF | Multimedia Programming Interface and Data Specifications | IBM/Microsoft | Download |
| Multimedia Data Types and Data Techniques v2.0 (MS Word) | Microsoft Corp. | Download | |
| RIP | Remote Imaging Protocol v1.54 (MS Word) | TeleGrafix Communications Inc. | Download |
| RIX | ColoRIX file formats RIX, SCD, SCE, SCR, SCP, SCG, SCU, SCI, SCK, SCQ, SCL, SCF, SCN, SCO, SCZ | Download | |
| RLA | Advanced Visualizer files | Download | |
| Extended form of RLA graphics format | Ben Campbell | Download | |
| RLE | ULAH RLE Format (Acrobat) | Spencer W. Thomas | Download |
| RM | RealMedia File Format (RMFF) Reference | RealNetworks, Inc. | LINK |
| RMF | Real (Progressive) Media Forma | Shan Weber | Download |
| RMT | RMT files used in Red Alert | Moritz Mertinkat | Download |
| ROL | Adlib .ROL file format | Chris Holmes | Download |
| ROQ | Id Software's .RoQ Video File Format | Tim Ferguson | Download |
| RPI | A flexible file format for solid free form fabrication (Acrobat) | Stephen J. Rock, Michael J. Wozny | Download |
| RPM | Linux RPM packages | Edward C. Bailey | LINK |
| RS-274X | Gerber RS-274X Format User’s Guide | Barco Graphics | Download |
| RSS | Syndication file format | LINK | |
| RTF | Word 97 Addendum (MS Word) | Microsoft Corporation | Download |
| Rich Text File Format v1.8 | Microsoft Corporation | Download |
How to help
If you have any better information or if you find problems with these files or links please .