| Extension |
Meaning / Link |
| .R |
Pegasus Mail
Resource File |
| .R?? |
RAR Compressed File
(?? can be 01 to 99) |
| .R8 |
RAW Graphic File |
| .R8L |
LaserJet Landscape
Font |
| .R8P |
LaserJet Portrait
Font |
| .RA |
RealMedia File |
| .RAM |
RealMedia Metafile |
| .RAR |
RAR Compressed
Archive |
| .RAS |
Sun Raster Graphic |
| .RAT |
Rating System File |
| .RAW |
RAW RGB 24-bit
Graphic, Raw Signed PCM Data |
| .RAX |
Image File |
| .RB |
RocketEdition
File |
| .RBF |
R:Base Data File |
| .RBH |
RoboHelp
Configuration |
| .RC |
Borland
C++ Resource Compiler Script File |
| .RD1 |
Descent1
Registered Level File |
| .RD3 |
Ray Dream Designer
Graphics, CorelDream 3D |
| .RD4 |
Ray Dream Designer
Graphics |
| .RD5 |
Ray Dream Designer
Graphics |
| .RDB |
TrueVector Rules
Database |
| .RDF |
Resource Description
Framework File, Chromeleon Report Definition |
| .RDL |
Descent
Registered Level |
| .RDX |
Reflex Data File |
| .REC |
Sprint Record File,
Windows Recorder Macro, RapidComm Voice File |
| .REF |
Cross Reference |
| .REG |
Registration Data |
| .REM |
Annotation (remark) |
| .REP |
Text Document |
| .REQ |
Request |
| .RES |
Resource File
(various programs) |
| .REX |
REXX Program File, Oracle
Report Definition |
| .REZ |
Resources |
| .RF |
Sun Raster Graphic,
RealFlash Clip |
| .RFD |
RecogniFORM
Form Definition |
| .RFG |
RFG
Integrator System Database |
| .RFH |
RFG
Integrator Householding Database |
| .RFT |
Revisable Format
Text |
| .RGB |
Picture File |
| .RI |
Lotus
File |
| .RIA |
Alpharel Group IV
Raster Graphics File |
| .RIC |
Ricoh Graphic File |
| .RIF |
Fractal Painter
Bitmap |
| .RIP |
Remote Imaging
Protocol |
| .RIX |
Colorix File, RIX
Virtual Screen |
| .RL1 |
Descent1
Registered Level File |
| .RL2 |
Descent2
Registered Level |
| .RLA |
Advanced Visualizer
File, Wavefront Raster Image |
| .RLB |
Harvard
Graphic File (Harvard Graphics taken over by Serif) |
| .RLC |
Image Systems CAD
Overlay |
| .RLE |
Graphic (Run Length
Encoded) |
| .RM |
RealMedia File |
| .RMD |
RegMaid Document |
| .RMF |
Rich Map Format (3D
Games) |
| .RMI |
MIDI File |
| .RMK |
RMake Make File |
| .RMM |
RealPlayer File |
| .RND |
AutoCAD
Rendering Slide, AutoShade Format |
| .RNL |
GTX Runlength Raster
Graphics |
| .RNX |
RealPlayer File |
| .ROL |
Adlib Music |
| .ROV |
Rescue Rover Data |
| .RP |
RealPix Clip |
| .RPD |
Rapidfile Database |
| .RPM |
RedHat Package
Manager (Linux), RealMedia Player File |
| .RPT |
Report (various) |
| .RQY |
MS
Excel OLE DB Query File |
| .RR |
Railroad Tycoon |
| .RRS |
Road Rash Save File |
| .RSB |
Rogue
Spear Bitmap |
| .RSL |
PC Tools Resources
Library, Borland's Paradox 7 Report, Adobe
Pagemaker File |
| .RSP |
Responce Text File,
Rockwell Software Logix 5 File |
| .RT |
RealText Clip |
| .RTA |
RoboHelp
Configuration |
| .RTF |
Rich Text Format |
| .RTK |
RoboHelp
Configuration |
| .RTL |
Text File |
| .RTM |
Real Tracker Music
Module |
| .RTP |
TurboTax
Update File |
| .RTS |
RoboHelp
Configuration, RealAudio RTSL Document |
| .RUL |
InstallShield |
| .RUN |
PC Tools Script
Tools Program |
| .RV |
RealVideo Clip |
| .RVP |
Microsoft Scan
Configuration File |
| .RX |
Reflex Database
Driver |
| .RXD |
Reflex Database |
| .RXH |
Reflex Database Help
File |
| .RXR |
Reflex Database
Report |
| .RXS |
Reflex Database
Screen Driver |
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