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Types of Assemblies
4u.DLL Dynamic Link Library
4u.EXE Windows Executable File
Types of Audio Files
4u.A52 Dolby Digital AC-3 Compressed Audio File
4u.AAC Advanced Audio Coding Compressed Audio File
4u.AC3 Dolby Digital AC-3 Compressed Audio File
4u.AIF Audio Interchange Format File
4u.APE Monkey's Audio Compressed Audio File
4u.AU Sun / NeXT Audio File
4u.DTS Digital Theater Systems Audio File
4u.FLAC Free Lossless Audio Codec Compressed Audio FIle
4u.M4A MPEG-4 Audio File
4u.M4P Protected AAC File
4u.MID MIDI Audio Sequence
4u.MKA Matroska Audio Stream
4u.MOD MOD Audio File
4u.MP1 MPEG-1 Audio Layer I
4u.MP2 MPEG-1 Audio Layer II
4u.MP3 MPEG-1 Audio Layer 3
4u.OGG Ogg Multimedia Container File
4u.OMA OpenMG Audio File
4u.RA RealMedia Audio File
4u.RAM RealMedia Audio File
4u.SND Sun / NeXT Audio File
4u.SPX Ogg Speex Audio File
4u.WAV Waveform Audio
4u.WMA Windows Media Audio File
4u.WV WavPack Compressed Audio File
4u.XM Extended Module Audio File
Compressed Files Compressed files or archives contain one or more files or folders that have been compressed to take up less space on disk. Compression is especially useful when transferring files over the internet as it saves bandwidth and reduces the time required to download files. The most common compressed file extensions are .ZIP (Zip Compressed Archive) and .RAR (WinRAR Compressed Archive). Types of Compressed Files
4u.7Z 7-Zip Compressed Archive
4u.ACE Ace Compressed Archive
4u.ARJ Archived by Robert Jung Compressed Archive
4u.BZ BZip Compressed Archive
4u.BZ2 BZip2 Compressed Archive
4u.CAB Cabinet Compressed Archive
4u.CPIO CPIO Compressed Archive
4u.GZ GNU Zip Compressed Archive
4u.JAR Java Archive
4u.LHA LHA Compressed Archive
4u.LZH Lempel-Ziv and Haruyasu Compressed Archive
4u.R00 WinRAR Archive Partial File
4u.RAR WinRAR Compressed Archive
4u.REV WinRAR Recovery Volume
4u.TAR TAR Archive
4u.TAZ TAR Compressed Archive
4u.TBZ BZip Compressed Tar Archive
4u.TBZ2 BZip2 Compressed Tar Archive
4u.TGZ GZip Compressed Tar Archive
4u.UU Uuencoded File
4u.UUE Uuencoded File
4u.XXE Compressed ASCII Archive
4u.Z Unix Compressed Archive
4u.ZIP Zip Compressed Archive
Types of Data Files
4u.CSV Comma Separated Value Database
4u.DAT Data File
4u.DBF dBASE Database
4u.ICL Icon Library
4u.MNL MathML Data
4u.NWP Magentic Content File
4u.ODB ODF Database
4u.ODF ODF Formula
4u.PART Partially Downloaded File
4u.SMF StarMath Data
4u.SXM OpenOffice.org 1.0 Formula
4u.TMP Temporary File
4u.TXT Comma Separated Value Database
4u.XLS Comma Separated Value Database
Disk Images Disk Images contain all of the data from a disk. A disk can be a CD, DVD, thumb drive, hard drive, memory card, or any other type of media. Common types of disk images are .ISO CD images and .BIN disk images. Types of Disk Images
4u.B5I B5I Disk Image
4u.B5T B5T Disk Image
4u.BIN Binary Disk Image
4u.BWI BlinkWrite Disk Image
4u.BWT BlinkWrite Disk Image
4u.C2D C2D Disk Image
4u.CCD CCD Disk Image
4u.CD CD Disk Image
4u.CDI CD Image File
4u.CDR Raw CD Audio File
4u.CIF CIF Disk Image
4u.DAO DAO Disk Image
4u.DI Raw CD Audio File
4u.DMG Mac OS X Disk Image
4u.DVD DVD Disk Image
4u.FCD FCD Disk Image
4u.FLP FLP Disk Image
4u.GCD GCD Disk Image
4u.GCM GameCube Image File
4u.GI Global Disk Image
4u.IBB IBB Disk Image
4u.IBP IBP Disk Image
4u.IBQ IsoBuster Disk Image
4u.IMG Disk Image File
4u.ISO ISO 9660 Disk Image
4u.LST DVD Image List
4u.MDF MDF Disk Image
4u.MDS MDS CD/DVD Image
4u.NRG Nero Disk Image
4u.P01 P01 Disk Image
4u.PDI InstantCopy Disc Image
4u.PXI PXI Disk Image
4u.TAO TAO Disk Image
4u.UDI Universal Disk Image
4u.VC4 VC4 Disk Image
4u.VCD Farstone Virtual Drive
4u.VDI Virtuo CD Manager Disk Image
Types of Documents
4u.ABW AbiWord Document
4u.CHM Compiled Help File
4u.DJV DjVu Document
4u.DJVU DjVu Document
4u.DOC Corel WordPerfect Document
4u.DOC Microsoft Word Document
4u.DOCM Microsoft Word XML Document
4u.DOCX Microsoft Open XML Word Document
4u.GAN GanttProject File
4u.HWP Hangul Word Processor Document
4u.LOG Log File
4u.ODM ODF Master Document
4u.ODT ODF Text Document
4u.OTH
4u.PDB Palm AportisDoc Document
4u.PDF Portable Document Format Document
4u.PSW Pocket Word Document
4u.RTF Rich Text Format Document
4u.SDW StarWriter Document
4u.SGL StarWriter Master Document
4u.STW OpenOffice.org 1.0/value/4u Template
4u.SXG OpenOffice.org 1.0 Master Document
4u.SXW OpenOffice.org 1.0 Text Document
4u.TXT Text Document
4u.UOF Unified Office Format Document
4u.UOT Unified Office Format Document
4u.WPD WordPerfect Document
4u.WPS Microsoft Works Document
4u.XML DocBook Document
Types of Images
4u.!S ZX Spectrum Hobetta Image
4u.$C ZX Spectrum Hobetta Image
4u.$S ZX Spectrum Hobetta Image
4u.001 Ricoh Fax Image
4u.001 SmartFax Image
4u.16 LSS16 Image
4u.2BP Pocket PC Bitmap Image
4u.2D Amapi Image
4u.301 Brooktrout 301 Image
4u.3FR Hasselblad 3F RAW Image
4u.411 Mavica Image
4u.4BIT GoDot Image
4u.4BT GoDot Image
4u.73I TI Bitmap Image
4u.82I TI Bitmap Image
4u.83I TI Bitmap Image
4u.85I TI Bitmap Image
4u.86I TI Bitmap Image
4u.89I TI Bitmap Image
4u.92I TI Bitmap Image
4u.A64 Artist 64 Image
4u.ABS Optocat Image
4u.ACE Aces200 Image
4u.ACR Dicom Image
4u.AFX Auto F/X Image
4u.ALIAS Alias Image File
4u.ALS Alias Image File
4u.AMI Amica Paint Image
4u.ANI Animated Mouse Cursor Image
4u.ANI Windows Animated Cursor
4u.ANV AirNav Image
4u.APX Photopaint Image
4u.ARF ARF Image
4u.ARN Astronomical Research Network Image
4u.ART Art Director Image
4u.ART Artisan Image
4u.ART Advanced Art Studio Image
4u.ART Pfs Art Publisher Image
4u.ATK Andrew Toolkit raster object Image
4u.ATT AT&T Group 4 Image
4u.AVS Stardent AVS X Image
4u.B&W ImageLab Image
4u.B16 PCO Image
4u.B3D B3D (images) Image
4u.BFL BFLI Image
4u.BFLI BFLI Image
4u.BFX Bfx Bitware Image
4u.BGA OS/2 Bitmap Image
4u.BIE JBIG Image
4u.BIF byLight Image
4u.BIG Cartes Michelin Image
4u.BLD MegaPaint Image
4u.BLK Amiga IFF Image
4u.BM X11 Bitmap Image
4u.BMC Embroidery Image
4u.BMF BMF Image
4u.BMP Windows Bitmap Image
4u.BMP Alpha Microsystems BMP Image
4u.BMS Playback Bitmap Sequence Image
4u.BOB Bob Raytracer Image
4u.BPX Truevision Targa Image
4u.BRK Brooktrout 301 Image
4u.BRT Brooktrout 301 Image
4u.BS Printfox/Pagefox Image
4u.BTN JustButtons animated bitmap Image
4u.BUM Poser Bump Image
4u.BW Silicon Graphics RGB Image
4u.B_W ImageLab Image
4u.C4 Edmics Image
4u.CAL CALS Raster Image
4u.CALS CALS Raster Image
4u.CAM Casio QV-10/100 Camera Image
4u.CAN Canon Navigator Fax Image
4u.CAR NeoBook Cartoon Image
4u.CAT Photomatrix Image
4u.CBM Fuzzy bitmap Image
4u.CDR Corel Draw Bitmap (preview) Image
4u.CDU CDU Paint Image
4u.CE Computer Eyes, Digital Vision Image
4u.CE1 ComputerEyes Raw Image
4u.CE2 ComputerEyes Raw Image
4u.CEL Kiss Cel Image
4u.CFT Optigraphics Image
4u.CIN Kodak Cineon Image
4u.CIT Intergraph Format Image
4u.CLO Cloe Ray-Tracer Image
4u.CLOE Cloe Ray-Tracer Image
4u.CLP Windows Clipboard Image
4u.CLP PC Paint / Pictor Page Image
4u.CLP GoDot Image
4u.CMP Discorp CMP Image
4u.CMT Chinon ES-1000 digital camera Image
4u.CMU CMU Window Manager Image
4u.CMX Corel Metafile Exchange (preview) Image
4u.CP8 CP8 256 Gray Scale Image
4u.CPI Calamus Image
4u.CPT CorelDraw Photopaint Image
4u.CR2 Raw Image File
4u.CRG Calamus Image
4u.CRW Raw Image File
4u.CT Iris CT Image
4u.CUR Mouse Cursor Image
4u.CURSOR Sun Icon/Cursor
4u.CUT Dr Halo Image
4u.CVP Portrait Image
4u.DAT SPOT Image
4u.DCM Dicom Image
4u.DCR Raw Image File
4u.DCX Multipage PCX Image
4u.DCX Zsoft Multi-page Paintbrush Image
4u.DCX Zsoft Publisher's Paintbrush Image
4u.DD Doodle C64 Image
4u.DDS Microsoft DirectDraw Surface
4u.DIA Dia UML Diagram
4u.DIB Windows Bitmap Image
4u.DIS DKB Ray-Tracer Image
4u.DNG Raw Image File
4u.DOO Doodle Atari Image
4u.DPX DPX Image
4u.DRZ Draz Paint Image
4u.DWF AutoCAD Drawing
4u.DWG AutoCAD Drawing
4u.DXF AutoCAD Drawing eXchange Format Drawing
4u.DXF AutoCAD Drawing
4u.ECC Ecchi Image
4u.EI Electric Image
4u.EIDI Electric Image
4u.EIF Eroiica Image
4u.EMF Enhanced Metafile Format Image
4u.EPA Award Bios Logo
4u.EPS Encapsulated PostScript Image
4u.ESM Enhance Simplex Image
4u.FAC Usenix FaceServer Image
4u.FACE Usenix FaceServer Image
4u.FAX Fax Group 3 Image
4u.FBM Fuzzy bitmap Image
4u.FFF Maggi Hairstyles & Cosmetics Image
4u.FI Flash Image
4u.FIG XFig Drawing
4u.FIT FIT Image
4u.FITS Flexible Image Transport System Image
4u.FLC Autodesk Animator Image
4u.FLI Autodesk Animator Image
4u.FPG DIV Game Studio Multi Map Image
4u.FRE Male Normal CT Image
4u.FRM Megalux Frame
4u.FRM PhotoFrame
4u.FSH EA Sports FSH Image
4u.FSY PhotoFantasy Image
4u.FTS Flexible Image Transport System Image
4u.FXO WinFAX Image
4u.FXS WinFAX Image
4u.G3 Fax Group 3 Image
4u.G3N Imaging Fax Image
4u.G4 Access Image
4u.GAF Total Annihilation Image
4u.GB Printfox/Pagefox Image
4u.GBR Gimp Brush Image
4u.GEM Digital Research (GEM Paint) Image
4u.GEO GeoPaint Image
4u.GG Koala Paint (Compressed) Image
4u.GIF Graphics Interchange Format Image
4u.GIFF CompuServe GIF Image
4u.GM Autologic Image
4u.GM2 Autologic Image
4u.GM4 Autologic Image
4u.GRB HP-48/49 GROB Image
4u.GREY Raw Image
4u.GRO HP-48/49 GROB Image
4u.GRY Raw Image
4u.HDR Apollo HDRU Image
4u.HDR ArcInfo Binary Image
4u.HDRU Apollo HDRU Image
4u.HED Hi-Eddi Image
4u.HF HF Image
4u.HIR Hires C64 Image
4u.HPGL HP Graphics Language Image
4u.HPI Hemera Photo Image
4u.HR TRS 80 Image
4u.HRU HRU Image
4u.HRZ Slow Scan Television Image
4u.HTA Hemera Thumbs Image
4u.I17 Pixel Power Collage Image
4u.I18 Pixel Power Collage Image
4u.IB7 Pixel Power Collage Image
4u.ICA IOCA Image
4u.ICB Image Capture Board Image
4u.ICN RIPTerm Image
4u.ICNS Macintosh Icon File
4u.ICO Windows Icon File
4u.ICO Sun Icon/Cursor
4u.ICON Sun Icon/Cursor
4u.IDC Core IDC Image
4u.IF9 Pixel Power Collage Image
4u.IFF Explore (TDI) & Maya Image
4u.IFF Sun TAAC Image
4u.IFF Amiga IFF Image
4u.IIM Inshape Image
4u.IIMG Interleaf Image
4u.ILBM Deluxe Paint, Electronic Arts Image
4u.IM AIM Grey Scale Image
4u.IM5 IM5 (Visilog) Image
4u.IMA AIM Grey Scale Image
4u.IMG ADEX Image
4u.IMG Digital Research (GEM Paint) Image
4u.IMG Imaging Technology Image
4u.IMG Img Software Set Image
4u.IMG Microtek Eyestar Image
4u.IMG Planetary Data System Image
4u.IMG Radiance Image
4u.IMG Sharp GPB Image
4u.IMG Starbase Image
4u.IMG Vivid Ray-Tracer Image
4u.IMG Autocad CAD-Camera Image
4u.IMG Datacopy Image
4u.IMG Vicar Image
4u.IMT IMNET Image
4u.INFO Amiga icon
4u.IOCA IOCA Image
4u.IPG Mindjongg Format Image
4u.IPH InterPaint (Hires) Image
4u.IPT InterPaint (Multicolor) Image
4u.IRIS Iris graphic Image
4u.IRIS Silicon Graphics RGB Image
4u.ISH Image Speeder Image
4u.ISM Image System (Multicolor) Image
4u.ISS ISS Image
4u.ITG Intergraph Format Image
4u.IVB Truevision Targa Image
4u.J JPEG / JFIF Image
4u.J2K LuraWave JPEG-2000 Format Image
4u.J6I Ricoh Digital Camera Image
4u.JBF PaintShopPro Browser Cache File
4u.JBG JBIG Image
4u.JBIG JBIG Image
4u.JFIF Joint Photographic Experts Group Image
4u.JIF Joint Photographic Experts Group Image
4u.JIF Jeff's Image Format Image
4u.JJ Doodle C64 (Compressed) Image
4u.JLS JPEG-LS Image
4u.JNG Jpeg Network Graphics Image
4u.JP2 LuraWave JPEG-2000 Format Image
4u.JPC LuraWave JPEG-2000 Code Stream Image
4u.JPE Joint Photographic Experts Group Image
4u.JPEG Joint Photographic Experts Group Image
4u.JPG Joint Photographic Experts Group Image
4u.JPS Stereo Image
4u.JPX LuraWave JPEG-2000 Format Image
4u.JTF Hayes JTFax Image
4u.K25 Kodak DC25 Camera Image
4u.KDC Raw Image File
4u.KFX Kofax Group 4 Image
4u.KOA Koala Paint Image
4u.KPS IBM Kips Image
4u.KQP Konica Camera File
4u.LBM Deluxe Paint, Electronic Arts Image
4u.LDA LaserData Image
4u.LFF LucasFilm Format Image
4u.LIF Homeworld Texture
4u.LVP LView Pro Image
4u.LWI Light Work Image
4u.M8 Heretic II MipMap Image
4u.MAC Mac Paint Image
4u.MACP Mac Paint Image
4u.MAG MAGIchan Graphics Image
4u.MAP DIV Game Studio Map Image
4u.MAP Fenix Map Image
4u.MBFAVS Stardent AVS X Image
4u.MBFS Stardent AVS X Image
4u.MBM Psion Serie 5 Bitmap Image
4u.MDI Microsoft Document Imaging Image
4u.MDL Half-Life Model Image
4u.MGR MGR bitmap Image
4u.MIF Image Magick file
4u.MIFF Image Magick file
4u.MIL Micro Illustrator Uncompressed Image
4u.MNG Multiple Network Graphics Image
4u.MPNT Mac Paint Image
4u.MRF Marks Russel File
4u.MRW Minolta Raw Image File
4u.MSK PaintShopPro Mask
4u.MSP Microsoft Paint Image
4u.MTV MTV Ray-Tracer Image
4u.MTX Maw-Ware Textures Image
4u.NCD CoverDesigner Image
4u.NCR NCR Image
4u.NCT CoverDesigner Template
4u.NEF Raw Image File
4u.NEO Neochrome (ST & TT) Image
4u.NGG Nokia Group Graphics Image
4u.NITF National Imagery Transmission Image
4u.NLM Nokia Logo File
4u.NOL Nokia Operator Logo
4u.NPM Neopaint Mask
4u.OAZ OAZ Fax Image
4u.OCP Advanced Art Studio Image
4u.OFX Olicom Fax Image
4u.OIL Open Image Library Format Image
4u.ORF Raw Image File
4u.OTB Nokia OTA Image
4u.P64 Picasso 64 Image
4u.P7 XV Visual Schnauzer Image
4u.PAC Stad Image
4u.PAINT Mac Paint Image
4u.PAN SmoothMove Pan Viewer Image
4u.PAT Gimp Pattern
4u.PAT Corel Draw Pattern (preview) Image
4u.PBM Portable Bitmap Image
4u.PBM Portable Bitmap Image
4u.PBT Micro Dynamics MARS Image
4u.PC1 Degas & Degas Elite Image
4u.PC2 Degas & Degas Elite Image
4u.PC3 Degas & Degas Elite Image
4u.PCC Zsoft Publisher's Paintbrush Image
4u.PCD Kodak Photo CD Image
4u.PCL Page Control Language Image
4u.PCT Mac Pict Image
4u.PCT NIST ihdr Image
4u.PCX Zsoft Paintbrush Image
4u.PD Male MRI Image
4u.PDB MonkeyCard Image
4u.PDB MonkeyLogo
4u.PDB Palm Pilot Image
4u.PDB Photo Deluxe Image
4u.PDB TealPaint Image
4u.PDD Photo Deluxe Image
4u.PDN Paint.NET Image
4u.PDS Planetary Data System Image
4u.PDX Mayura Draw Image
4u.PE4 Ulead Texture
4u.PEF Raw Image File
4u.PFR PaintShopPro Frame
4u.PG Printfox/Pagefox Image
4u.PGC Portfolio Graphics Compressed Image
4u.PGF Portfolio Graphics Image
4u.PGM Portable Graymap Image
4u.PHP Adobe PhotoParade Image
4u.PI Blazing Paddles Image
4u.PI1 Degas & Degas Elite Image
4u.PI2 Degas & Degas Elite Image
4u.PI3 Degas & Degas Elite Image
4u.PI4 Degas & Degas Elite Image
4u.PI5 Degas & Degas Elite Image
4u.PI6 Degas & Degas Elite Image
4u.PIC Macintosh Quickdraw/Pict Image
4u.PIC PC Paint / Pictor Page Image
4u.PIC Pixar Image
4u.PIC Radiance Image
4u.PIC Rayshade Image
4u.PIC Advanced Art Studio Image
4u.PIC Bio-Rad confocal Image
4u.PIC Psion Serie 3 Bitmap Image
4u.PIC Softimage
4u.PIC Stad Image
4u.PIC WinMIPS Image
4u.PICIO Pixar Image
4u.PICT Macintosh Quickdraw/Pict Image
4u.PICT2 Macintosh Quickdraw/Pict Image
4u.PIG Ricoh IS30 Image
4u.PIX Alias Image File
4u.PIX Truevision Targa Image
4u.PIX Vort Image
4u.PIX ESM Software Pix Image
4u.PIX PABX Image
4u.PIXAR Pixar Image
4u.PLT HP Graphics Language Image
4u.PM X11 Pixmap Image
4u.PM PM Image
4u.PMG Paint Magic Image
4u.PMP Sony DSC-F1 Cyber-shot Image
4u.PNG Portable Network Graphic Image
4u.PNM Portable Image
4u.PNT Mac Paint Image
4u.PNTG Mac Paint Image
4u.PP4 Micrografx Picture Publisher 4.0 Image
4u.PP5 Micrografx Picture Publisher 5.0 Image
4u.PPM Portable Pixelmap Image
4u.PPP Punk Productions Picture
4u.PR Sun Icon/Cursor
4u.PRC Picture Gear Pocket Image
4u.PRF Polychrome Recursive Format Image
4u.PRI Prisms Image
4u.PSD Adobe Photoshop Image
4u.PSE IBM Printer Page Segment Image
4u.PSF PhotoStudio File
4u.PSP PaintShopPro Image
4u.PST Ulead Pattern
4u.PWP Seattle Film Works multi-image
4u.PXA Pixia Image
4u.PXA Pegs Image
4u.PXB Pixibox Image
4u.PXR Pixar Image
4u.PXS Pegs Image
4u.PZL Puzzle Image
4u.PZP MGI Photosuite Project Image
4u.Q0 Q0 Image
4u.QDV Qdv (Random Dot Software) Image
4u.QRT Qrt Ray-Tracer Image
4u.QTI QuickTime Image Format Image
4u.QTIF QuickTime Image Format Image
4u.QTL YUV 16Bits Image
4u.QTL YUV 4:4:4 Image
4u.QTL YUV 4:1:1 Image
4u.QTL YUV 4:2:2 Image
4u.RAD Radiance Image
4u.RAF Raw Image File
4u.RAS Sun Raster Image
4u.RAST Sun Rasterfile
4u.RAW Raw Image File
4u.RGB Q0 Image
4u.RGB Silicon Graphics RGB Image
4u.RGBA Silicon Graphics RGB Image
4u.RGH ZZ Rough Image
4u.RIX ColoRIX Image
4u.RL4 Windows Bitmap Image
4u.RL8 Windows Bitmap Image
4u.RLA Wavefront Raster Image
4u.RLB Wavefront Raster Image
4u.RLC Image Systems RLC2 Graphic Image
4u.RLE ADEX Image
4u.RLE Intergraph Format Image
4u.RLE Utah raster Image
4u.RLE Windows Bitmap Image
4u.RP Rainbow Painter Image
4u.RPBM Portable Bitmap Image
4u.RPGM Portable Greyscale Image
4u.RPM RunPaint (Multicolor) Image
4u.RPNM Portable Image
4u.RPPM Portable Image
4u.RS Sun Rasterfile
4u.RSB Red Storm Image
4u.SAR Saracen Paint Image
4u.SC2 Msx 2 Screen Image
4u.SCI SciFax Image
4u.SCI ColoRIX Image
4u.SCR Sun Rasterfile
4u.SCR ZX Spectrum Standard Screen Image
4u.SCT SciTex Continuous Tone Image
4u.SCX ColoRIX Image
4u.SD0 Dali Raw Image
4u.SD1 Dali Raw Image
4u.SD2 Dali Raw Image
4u.SDG Star Office Gallery Image
4u.SDT SmartDraw 6 Template
4u.SEQ Stad Image
4u.SFW Seattle Film Works Image
4u.SGF StarWriter Graphics Format Image
4u.SGI Silicon Graphics RGB Image
4u.SGV StarDraw Image
4u.SI Softimage
4u.SIM Aurora Image
4u.SIR BYU SIR Image
4u.SIR Solitaire Image Recorder Image
4u.SJ1 Sega SJ-1 DIGIO Image
4u.SKF Autodesk SKETCH thumbnail Image
4u.SKN Skantek Image
4u.SKP Autodesk SketchUp component Image
4u.SMP Xionics SMP Image
4u.SNA ZX Spectrum Snapshot Image
4u.SPC Spectrum 512 (Compressed) Image
4u.SPS Spectrum 512 (Smooshed) Image
4u.SPU Spectrum 512 Image
4u.SR Sun Rasterfile
4u.SR2 Sony Raw Image File
4u.SRF Sony Raw Image File
4u.SSI SriSun Image
4u.SSP Axialis Screensaver Image
4u.ST4 SBIG CCD camera ST-X Image
4u.ST4 SBIG CCD camera ST-4 Image
4u.ST5 SBIG CCD camera ST-X Image
4u.ST6 SBIG CCD camera ST-X Image
4u.ST7 SBIG CCD camera ST-X Image
4u.ST8 SBIG CCD camera ST-X Image
4u.STM PhotoStudio Stamp Image
4u.STW Neopaint Stamp Image
4u.STX SBIG CCD camera ST-X Image
4u.SUL Gfa Raytrace Image
4u.SUN Sun Rasterfile
4u.SUNIFF Sun TAAC Image
4u.SVG Scalable Vector Graphics Image
4u.SVGZ GZip Compressed Scalable Vector Graphics Image
4u.SYN Synthetic Universe Image
4u.SYNU Synthetic Universe Image
4u.T1 Male MRI Image
4u.T2 Male MRI Image
4u.TAAC Sun TAAC Image
4u.TAP Oric TAP Image
4u.TARGA Truevision Targa Image
4u.TDI Explore (TDI) & Maya Image
4u.TDIM Digital F/X Image
4u.TEX PaintShopPro Texture
4u.TG4 TG4 Image
4u.TGA Truevision Targa Image
4u.THB KinuPix Skin Image
4u.TIF Tagged Image File Format Image
4u.TIFF Tagged Image File Format Image
4u.TIL Buttonz & Tilez texture
4u.TILE Eclipse Image
4u.TIM Sony Playstation TIM Image
4u.TIM TIFF Revision 6 Image
4u.TN1 Tiny Image
4u.TN2 Tiny Image
4u.TN3 Tiny Image
4u.TNL Thumbnail Image
4u.TNY Tiny Image
4u.TTF Optigraphics Tiled Image
4u.TUB PaintShopPro Picture Tube Image
4u.UPI Ulead PhotoImpact Image
4u.URT Utah raster Image
4u.UYVY YUV 16Bits Image
4u.VDA Video Display Adapter Image
4u.VFF Sun TAAC Image
4u.VGA Windows Bitmap Image
4u.VI Jovian VI Image
4u.VIC Vicar Image
4u.VICAR Vicar Image
4u.VID Vidcom 64 Image
4u.VIF Khoros Visualization Image file
4u.VIF Verity Image
4u.VIFF Khoros Visualization Image file
4u.VIT VITec Image
4u.VOB Vue d'esprit Image
4u.VPB Quantel VPB Image
4u.VST Vista Image
4u.WAD WAD (Half Life) Image
4u.WAL Quake Texture
4u.WAP Wireless Bitmap Image
4u.WBC WebShots Image
4u.WBM Wireless Bitmap Image
4u.WBMP Wireless Bitmap Image
4u.WBZ WebShots Image
4u.WFX WinFAX Image
4u.WPG WordPerfect Graphics Image
4u.WRL VRML2 Image
4u.X Stardent AVS X Image
4u.X11 X Windows System Dump Image
4u.X3F Raw Image File
4u.XAR Xara Image
4u.XBM X Bitmap Image
4u.XCF Gimp Bitmap Image
4u.XIF Xerox DIFF Image
4u.XIM Ximage
4u.XP0 SecretPhotos Puzzle Image
4u.XPM X PixMap Image
4u.XV Khoros Visualization Image file
4u.XWD X Windows System Dump Image
4u.YUV YUV 16Bits Image
4u.YUV YUV 4:1:1 Image
4u.YUV YUV 4:2:2 Image
4u.YUV YUV 4:4:4 Image
4u.ZBR Zoner Zebra Metafile
4u.ZMF Zoner Callisto Metafile
4u.[B] Amica Paint Image
Types of Metadata Files
4u.ABT AbiWord Template
4u.ASA ASP Configuration File
4u.ASX Advanced Stream Redirector
4u.B4S Winamp 3+ Playlist
4u.BTSEARCH BitTorrent Search File
4u.BUP DVD Information File
4u.CGM Computer Graphics Metafile
4u.CKZ CKZ Checksum File
4u.CODE eXtensible Stylesheet Language Transformation File
4u.CONFIG Configuration File
4u.CRC Cyclic Redundancy Check Checksum File
4u.CUE Cue Sheet
4u.DOT Microsoft Word Template
4u.DOTM Microsoft Word XML Template
4u.DOTX Microsoft Open XML Word Template
4u.EMF Enhanced Metafile
4u.IFO DVD Information File
4u.INI Initialization File
4u.M3U MP3 Uniform Resource Locator
4u.MANIFEST Windows Assembly Manifest File
4u.MD5 MD5 Checksum File
4u.MET OS/2 Metafile
4u.MP TeX Metapost Macro
4u.NFO Downloaded Program Information
4u.OTP ODF Presentation Template
4u.OTS ODF Spreadsheet Template
4u.OTT ODF Text Document Template
4u.PAR Parity Checksum File
4u.PLS Playlist
4u.POT Microsoft PowerPoint Template
4u.POTM Microsoft Open XML Macro-Enabled PowerPoint Template
4u.POTX Microsoft Open XML PowerPoint Template
4u.SFV SFV Checksum File
4u.SHAPE Dia Shape File
4u.SRT DVD Subtitles File
4u.STC OpenOffice.org 1.0 Spreadsheet Template
4u.STI OpenOffice.org 1.0 Presentation Template
4u.STW OpenOffice.org 1.0 Text Document Template
4u.SVM StarView MetaFile
4u.TEX TeX PSTricks Macro
4u.TORRENT BitTorrent Tracker File
4u.VLC VLC Media Player Data
4u.VOR StarWriter Template
4u.VOR StarCalc Template
4u.VOR StarImpress Template
4u.WMF Windows Metafile
4u.XLM Microsoft Excel Macro
4u.XLT Microsoft Excel Template
4u.XLTM Microsoft Excel XML Template
4u.XLTX Microsoft Excel XML Template
4u.XLW Microsoft Excel Workspace
4u.XSPF XML Shareable Playlist Format
Types of Plugins
4u.XPI Firefox Plugin
Types of Presentations
4u.ODG ODF Drawing Presentation
4u.ODP ODF Presentation
4u.PPS Microsoft PowerPoint Show
4u.PPSX Microsoft Open XML PowerPoint Show
4u.PPT Microsoft PowerPoint Presentation
4u.PPTM Microsoft Open XML Macro-Enabled PowerPoint Presentation
4u.PPTX Microsoft Open XML PowerPoint Presentation
4u.SDA StarDraw Drawing
4u.SDD StarDraw Drawing
4u.SDD StarImpress Presentation
4u.SXD Microsoft OpenOffice.org 1.0 Drawing
4u.SXI OpenOffice.org 1.0 Presentation
4u.UOF Unified Office Format Presentation
4u.UOP Unified Office Format Presentation
Types of Shell Scripts
4u.AU3 AutoIt Script
4u.BAT Windows Batch File
4u.BSH Bash Shell Script
4u.SH Unix Shell Script
Types of Source Code
4u.ASAX ASP.Net Open XML Configuration File
4u.ASP Active Server Page Source File
4u.ASPX ASP.Net Open XML Source File
4u.C C Source File
4u.CGI Perl Source File
4u.CPP C++ Source File
4u.CS C# Source File
4u.CSPROJ C# Project File
4u.CSS Cascading Style Sheets Source File
4u.CXX C++ Source File
4u.H C Header File
4u.HPP C++ Header File
4u.HTA
4u.HTM Hypertext Markup Language Source File
4u/value/4u Hypertext Markup Language Source File
4u.JAVA JAVA Source File
4u.JS JavaScript Source File
4u.JSP JavaServer Pages Source File
4u.MHT
4u./value/4u
4u.PHP PHP Source File
4u.PHP3 PHP3 Source File
4u.PL Perl Source File
4u.PM Perl Module
4u.RC C++ Resource Compiler Script
4u./value/4u Server Side Includes/value/4u File
4u.SQL SQL Database Query
4u.STM Server Side Includes/value/4u File
4u.VB Visual Basic .Net Source File
4u.VBPROJ Visual Basic .Net Project File
4u.VBS Visual Basic Script
4u.XAML Extensible Application Markup Language
4u.XML Extensible Markup Language
Types of Spreadsheets
4u.123 IBM Lotus 1-2-3 Spreadsheet
4u.DIF Data Interchange Format Document
4u.ODS ODF Spreadsheet
4u.PXL Pocket Excel Spreadsheet
4u.SDC StarCalc Spreadsheet
4u.SLK SYLK Spreadsheet
4u.SXC OpenOffice.org 1.0 Spreadsheet
4u.UOF Unified Office Format Spreadsheet
4u.UOS Unified Office Format Spreadsheet
4u.WB2 Quattro Pro Spreadsheet
4u.WK1 Lotus 1-2-3 Spreadsheet
4u.WKS Lotus 1-2-3 Spreadsheet
4u.XLC Microsoft Excel Chart
4u.XLS Microsoft Excel Spreadsheet
4u.XLSB Microsoft Excel Binary Spreadsheet
4u.XLSM Microsoft Open XML Macro-Enabled Excel Spreadsheet
4u.XLSX Microsoft Open XML Excel Spreadsheet
Types of Videos
4u.3G2 3G Mobile Phone Video
4u.3GP 3G Mobile Phone Video
4u.ASF Advanced Systems Format Video
4u.AVI Audio Video Interleave
4u.BIK Bink Video
4u.BIN Binary DVD Video
4u.DAT VCD Video
4u.DIVX DivX Movie
4u.DV Digital Video
4u.FLV Flash Video
4u.GXF General eXchange Format
4u.M1V MPEG-1 Video
4u.M2TS MPEG-2 Transport Stream Videos
4u.M2V MPEG-2 Video
4u.M4V MPEG-4 Video File
4u.MKV Matroska Video Stream
4u.MOV Apple QuickTime Movie
4u.MP4 MPEG-4 Part 14 Multimedia Container
4u.MPEG MPEG Video
4u.MPEG1 MPEG-1 Video
4u.MPEG2 MPEG-2 Video
4u.MPEG4 MPEG-4 Video
4u.MPG MPEG Video
4u.MTS AVCHD Video File
4u.MXF Material eXchange Format
4u.OGM Ogg Multimedia Container File
4u.RM RealMedia Streaming Media File
4u.RMVB RealMedia Variable Bitrate Media File
4u.SWF Adobe Flash Movie
4u.TS DVD Video
4u.VOB DVD Video Object
4u.WMV Windows Media Video
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