| File Extension: | PR4 |
| File Type Description: | Harvard Graphics Presentation |
| File Type Developer: | Software Publishing Corporation (SPC) |
| Primary Associated Software: | Corel Presentations X8 |
| Primary Software Developer: | Corel |
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The PR4 file extension is a Harvard Graphics Presentation file developed originally by Corel for Corel Presentations X8. User statistics infer that these PR4 files are popular with users from United States and most frequently found on the Windows 10 platform. Google Chrome is the predominant internet browser used by this population.
 | Corel Presentations X8 by Corel |
 | Harvard Graphics Presentation Software by Software Publishing Corporation (SPC) |
 | CheckMark Payroll by CheckMark Inc |
| Windows 10 | Windows 11 | Windows 6 | Windows 8.1 |
 | Windows |
 | Mac |
| Extension | File Type Developer | File Category | File Type Description |
|---|---|---|---|
| .PRS | Software Publishing Corporation (SPC) | Data Files | Harvard Graphics Presentation |
| .ABX | Corel | Database Files | WordPerfect Address Book |
| .PSP | Corel Corporation | Raster Image Files | PaintShop Pro Image |
| .TV9 | Corel Corporation | Temporary Files | Corel WordPerfect Overflow File |
| .ALT | Microsoft Corporation | Uncommon Files | Dynamics AX Temporary File |
| .ZO5 | Check Point Software Technologies Ltd. | Data Files | ZoneAlarm Mailsafe Renamed Data |
| .ZNU | Check Point Software Technologies Ltd. | Data Files | ZoneAlarm Mailsafe Renamed Data |
| .ZO7 | Check Point Software Technologies Ltd. | Data Files | ZoneAlarm Mailsafe Renamed Data |
| .FH8 | Adobe Systems Incorporated | Vector Image Files | FreeHand 8 Drawing File |
| .R83 | Eugene Roshal | Compressed Files | RAR Compressed Files From A Multi-Volume Archive |
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