This is the list of every file type and file extension recognized by TrID file identifier. Check the Forum for a detailed change log. You are welcome to contribute with new defs: Send me them and you will be listed here! Check the TrIDScan page for a quick How-To. Thanks!

TrID file type / file extension definitions: 18449

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z !-@ _

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Extension	File Type	Files scanned	Contributor
O	ELF Executable and Linkable format (generic)	61
O/OBJ/LIB	Intel 80386 Common Object File Format (COFF) object / library	205	Joerg Jenderek
O/OBJ/LIB	Intel AMD64 Common Object File Format (COFF) object / library	716	Joerg Jenderek
O/OBJ/LIB	Intel IA64 Common Object File Format (COFF) object / library	1	Joerg Jenderek
O	Mac OS X Mach-O Universal Object code	8	Joerg Jenderek
O/DYLIB/BUNDLE	Mac OS X Universal Binary (generic)	18	Joerg Jenderek
O	i8086 relocatable Object code	6
O2C	Objects to See 3D object	4
O3M	Ortho 3D Model	2
O5C	OpenStreetMap O5c data	3
O5M	OpenStreetMap O5m data	8
O65	6502 binary relocation format (v1)	3
O65	6502 binary relocation format (v2)	2
OAD	Notaro document	34
OADX	WP!nnovatio document	22
OADX	WP!nnovatio document (UTF-8)	4
OAF	Obsidian Asset File game data archive	5
OAP/OSP	Outsystems Application/Solution Pack	20
OAS	OASIS stream	97
OB3	ORTIM Zeit data	289	Scrapie
OBB	Touch Detective game data archive	3
OBD	Office Binder Document	10
OBD	Office Binder Document (97-2000)	3
OBF	OBF	13
OBF	Open Board Format	10
OBF	OsmAnd Binary maps Format	21
OBJ	3D Construction Kit Object	5
OBJ	Blender 3D object	19
OBJ	CADRazor 3d model	32
OBJ/A	Common Object File Format (COFF) Library	133
OBJ	Flashback Object	7
OBJ	LightWave 3D exported object	20
OBJ	MeshLab mesh	14
OBJ	Microsoft BASIC PDS 7.x DOS Object module	60
OBJ	Microsoft Basic 7.1 compiled object code	88
OBJ	Microsoft QuickBASIC 4.0 DOS Object module	32
OBJ	Microsoft QuickBASIC 4.5 DOS Object module	33
OBJ	Microsoft VBDOS 1.0 compiled object code	57
OBJ	OMF - Relocatable Object Module Format	14
OBJ	Oberon V4 Object code	234	Romiras
OBJ	Oberon-M Object	13
OBJ	Opticks Object	55
OBJ/BIN	TransFORTH compiled object code	5
OBJ	UVMapper object	6
OBJ	WDCxAS Object code (v1)	9
OBJ	WDCxAS Object code library (v1)	3
OBJ	Wavefront Object (created by 3D Max)	12
OBJ	Wavefront Object (created by Hexagon)	12
OBJ	Wavefront Object (created by VXelements)	14
OBJ	Wavefront Object (exported by 3D Builder)	7
OBJ	Wavefront Object (generic)	21
OBJ	World Construction Set Object	84
OBJ	X-CAD Modifier Table	55
OBJECT	3-Demon Object	21
OBK	Chessmaster Opening Book	2
OBK	The Chessmaster 4000 opening book	5
OBML	Opera Binary Markup Language	11
OBML16	Opera Mini saved page	15
OBO	PSI MI format	28
OBP	Bryce Object Presets	41
OBP/OPK/OSP/OVP	White Birds Productions game data archive	6
OBPACK	ObjectBar theme	4
OBR	Borland C++ Object Browser data	4
OBR	Borland Turbo C Object Browser data (old)	12
OBSP	Oberheim SEM V preset	10
OBX	Psion Organiser Block data	2
OBZ	Open Board Format Zipped	21
OC3/OCT	Metashape dense point cloud	5
OCB	OpenChrom chromatogram	2
OCC	DB/TextWorks Database Terms and Words	7
OCD	MetaEdit OODA Class Diagram	3
OCD	OCAD map	8
OCF	Oberon/F Code File	57	Romiras
OCI	OpenCanvas Image	9
OCIO	OpenColorIO profile	62
OCIO	OpenColorIO profile (with rem)	23
OCP	OptiCut Panels	3
OCRHEX	OcrHex enconded	6
OCS	OCS/Fusion Inventory	14
OCT	Radiance Octree	4
OCX	OLE Custom / ActiveX Control (32bit)	63
OCX	OLE Custom Control (16bit)	38
ODB	OpenDocument DataBase (generic)	7
ODB	OpenDocument Database (ODF 1.1)	19
ODB	OpenDocument Database (ODF 1.2)	42
ODC	Oberon/F Document	35	Romiras
ODC	OpenDocument Chart document	11
ODCL	Open Dialog Control Language for AutoCAD	25	Peter Glasl
ODD	Oracle Data base Diagram	6
ODEX	Optimized Dalvik Executable	8
ODF	OpenDocument Formula	12
ODG	OpenDocument Graphics document	23
ODICT	ODict Dictionary	4
ODL	Microsoft Object Description Language	14
ODL	Microsoft Object Description Language (with #)	14
ODL	Microsoft Object Description Language (with rem)	11
ODM	OpenDocument Master Text document	8
ODM	OverDrive Media console media control	10
ODP	OpenDocument Presentation	23
ODS	OpenDocument Spreadsheet document	27
ODT	MindRender VREK Object File Format	5
ODT	OpenDocument Text document	86
ODV	Ocean Data View data (TXT)	19
ODV	Photofinish Output Device info	21
ODX	Open Diagnostic Data eXchange	42
ODX	Open Diagnostic Data eXchange (UTF-8)	4
ODXML/XML	ODict XML	6
OEACCOUNT	Windows Mail Account	15
OEMODEL	Seene 3d model (v2)	5
OEMODEL	Seene 3d model (v3)	8
OES	OpenCanvas event data	3
OFC	Open Financial Connectivity	4
OFF	OFF geometry definition	6
OFM	Melco DesignShop Project	9
OFM	OmniForm Form	32
OFNT	IFF Outline Font	5
OFORM	ONLYOFFICE Form for online completion	295	Joerg Jenderek
OFP	Origin Function Plot	19
OFR/OFS	OptimFROG encoded audio	75
OFS3/1PSP	Sword Art Online game data archive	3
OFT	Outlook Form Template	57
OFW	TopLevel Forms Form	19
OGF	LEONARD'S Sketch drawing	21
OGG	OGG Vorbis audio	37
OGG	OGG stream (generic)	35
OGL	Actor ObjectGraphics	6
OGL	Molden OpenGL model	2
OGM	OGG Media stream	4
OGMO	Ogmo project	5
OGP	PlayStation RSD Object Group (gen)	4
OGP	PlayStation RSD Object Group (v3.0)	2
OGV/OGG	Ogg Theora video	14
OGV/OGG	Ogg Vorbis Skeleton/Video	11
OHT	Oracle Help for Java mapping	10
OIB	Olympus Image Binary	13
OIF	Olympus Original Imaging Format	11
OIL	OpenIL/DevIL raster/animation format	3
OIR	Olympus RAW format	6
OIR	Olympus RAW format (FluoView)	5
OIV	OpenIV mod package	7
OJS	OpenMG Jukebox Skin	31
OKT/OKTA	Oktalyzer module	47
OL	STALCRAFT texture	5
OLB	OrCAD PSpice Capture Symbols Models	76
OLB	PageFocus Objects Library	10
OLB	PageFocus Palette	2
OLEO	Oleo spreadsheet	11
OLF	Overlay Font	9
OLF	OyezForms saved rigid form (v9, v10)	6
OLK	Soulcalibur III game data archive	6
OLRW/OLR	Openlab Raw Format	4
OLS	WinOLS project	11
OLSR	olsrd configuration	2
OMA	Sony OpenMG Audio	6
OMA	Sony OpenMG Audio (variant)	9
OMF	Onyx Music File module	24
OMF/OMFI	Open Media Framework Interchange	7
OMF	Open Media Framework Interchange (v2)	2
OMF	Open Source Metadata Framework	11
OML	OutSystems Modeling Language	46
OMOD	OpenMRS Module	10
OMP	OpenMusic Patch	88
OMR	openMSX replay (ungzipped)	14
OMT	AWE Games game data container	2
OMX	OMAX Make tool path data	4
OMX	OMAX Make tool path data (with rem)	3
OMX	Ots Media Library	4
ON1	ON1 Photo RAW	50
ONB	OpenModelica NoteBook	21
OND	Lotus Notes Encapsulated Memo	6
ONE	Microsoft OneNote note	6
ONE	SEMONE compressed archive	10
ONE	Sequencer One song	9
ONEPKG	Microsoft OneNote Package	10
ONETOC2	OneNote table of contents	9
ONTX	the Word Encrypted Bible Text Module	3
OOM	PowerDesigner Model	32
OOP	OOP compressed archive	4
OP2	OP2 bank format	8
OP2	Stanford Research Systems Optimlelt file	2
OP3	Junglevision patch file format	5
OPA/OPO/APP	Psion Object/OPL Output	9
OPAM	OPAM package info	15
OPC	Office Upgrade Control	8
OPD	Durango Interferometry data	18
OPD	OmniPage Document	18
OPD	Wyko OPD binary data	8
OPD	Z80onOPD Opus disk image	5
OPDX	Dektak OPDx profilometry data	5
OPENBUS	Altium OpenBus system document	102
OPF	EPUB package document metadata	17
OPF	OEB Package Format eBook	19
OPF	Obsidium Project File	6	.Cryorb
OPF	OmniPass encrypted	4
OPF	Outforce Packed Content	2
OPI	OmniPass exported user	2
OPINION	Ghidra Opinion	27
OPJ	OrCAD Project	17
OPJ	Origin Project	37
OPJU	Origin Project (Unicode compliant)	7
OPK	Origin Pack game data archive	7
OPK	Psion Organiser Pack image	2
OPL/OPH/OXH	EPOC OPL source	10
OPL	Meridian OPL4 soundbank	2
OPLI	OPL3BankEditor instrument format (v1)	2
OPLI	OPL3BankEditor instrument format (v2)	2
OPLI	OPL3BankEditor instrument format (v3)	3
OPML/XML	Outline Processor Markup Language	37
OPO	EPOC OPL Object module	29
OPPC/OPPS3	Darksiders game data package	5
OPS	Office Profile-Settings (v1.1)	4
OPS	Office Profile-Settings (v10.0)	3
OPS	Office Profile-Settings (v11.0)	6
OPT	Delphi project Options	4
OPT	EDITV settings	2
OPT	Holtek HT-IDE3000 Options/settings	7
OPT	Neuratron PhotoScore Document	2
OPT	Visual C local project settings	7
OPUS	Opus compressed audio	11
OPX	EPOC OPL eXtension	6
OPX	OrgPlus Organization Chart	17
OPY	OptiY Model	14	TBeu
ORA	OpenRaster bitmap	12
ORC	Csound Orchestra	20
ORC	OpenRocket Component	60
ORC	Oracle song	9
ORF	Olympus digital camera RAW image (IIRO)	42
ORF	Olympus digital camera RAW image (IIRS)	5
ORF	Olympus digital camera RAW image (MMOR)	2
ORG	Creative Music System Intelligent Organ music	101
ORG	GENPO Organ	9
ORG	Lotus Organizer data (old)	6
ORG	Org-mode	16
ORG	Organya 2 module	38
ORG	Organya module	80
ORGAN	Hauptwerk Organ definition	9
ORGAN	Hauptwerk Organ definition (UTF-8)	5
ORGAN	Hauptwerk Organ definition (with rem)	14
ORGAN	Hauptwerk Organ definition (with rem, UTF-8)	5
ORI	EasyCode assembler Original configurations	18
ORK	OpenRocket project (XML, v1.x)	57
ORK	OpenRocket project (zipped)	75
ORP	OpenRGB Profile	5
ORT	Oric Raw Tape format	2
OS6	Norton pcAnywhere Online Services list	2
OSB	OpenStreetMap Binary map data	2
OSB	osu! beatmap storyboard data	2
OSC	FL Studio 3x Osc settings	4
OSC	OpenStreetMap Change data	3
OSC	OptionScope Worksheet	2
OSD	Okteta grammar (XML)	20
OSEXP/OPENSESAME	OpenSesame Experiment	29
OSF	Oberon/F Symbol File	106	Romiras
OSF	Open Slicer Format	5
OSG	OpenSG scene	16
OSG	OpenSceneGraph legacy text format	27
OSGB	OpenSceneGraph Binary format	5
OSGT	OpenSceneGraph Text format	28
OSIM	OpenSim project	19
OSM	OpenStreetMap XML Data	20
OSM	Oxygen Software SMS data (v3)	3
OSP	OpenShot Project	25
OSP	Orion Sampler sample	8
OSP	Synth Pack module	24
OSQ	Original Sound Quality audio	6
OSS	Open Music System Studio Setup	2
OST	Outlook Exchange Offline Storage	20	Jonathan Marsh
OSU	Osu! script	4
OSU	osu! beatmap note timing data (v14)	21
OSZ	osu! compressed beatmap data	15
OTF	OpenType Font	11
OTG	OpenDocument Graphics template	15	Joerg Jenderek
OTH	OpenDocument HTML Template	6	Joerg Jenderek
OTM	Tools Media Corp. Mesh	1395
OTO	AutoPano project	2
OTP	OpenDocument Presentation Template	30
OTRKEY	OnlineTVRecorder (OTR) Keyfile	5	Icfu
OTS	OpenDocument Spreadsheet template	39
OTS	OpenTimestamps proof	8
OTT	OpenDocument Text Document template	411
OTX	Olitext document	3
OTX	Oliwrite document	5
OTZ	OpenLP Theme	5
OUT	GNU gprof performance data	7
OUT	Lua 4.0 bytecode	5
OUT	Lua 5.0 bytecode	5
OUT	Lua 5.1 bytecode	9
OUT	Lua 5.2 bytecode	6
OUT	Lua 5.3 bytecode	5
OUT	Lua bytecode (generic)	13
OUT/TXT	Wireshark traffic log	20
OUTJOB	Altium Designer Output Job	21
OVA	Open Virtualization Format package	19
OVD	ObjectVision Datafile	43
OVE	Cakewalk Overture Score	12
OVF/SVF	OOMMF Vector Field 0.0 / Simple Vector Field	2
OVF	OOMMF Vector Field 1.0 format	5
OVF	OOMMF Vector Field 2.0 format	2
OVF	Open Virtualization Format descriptor	19
OVF	Open Virtualization Format descriptor (UTF-8)	8
OVL	C-Worthy Machine Dependant Overlay (v1.x)	7
OVL	Elite: Dangerous game data	16
OVL	Geogrid Overlay (binary)	6
OVL	IBM PC Overlay	4
OVL	JEMM memory manager	4
OVL	Logitech Modula-2 Overlay (v3.x)	9
OVL	RollerCoaster Tycoon 3 game data	3
OVPN	OpenVPN profile (var.1)	21
OVPN	OpenVPN profile (var.2)	10
OVPN	OpenVPN profile (with rem)	11
OVR	Borland Overlay	6
OVR	NewWord messages Overlay	3
OVR	Turbo Pascal Overlay	5
OVR	UCDOS Overlay	3
OVS	Visi On Overlay	7
OVW	Audio Overview	31
OVX	Psion OVAL Control	12
OWS	OWS (fake) compressed archive	3
OWS	OWS compressed disk image	4
OXM	FastTracker 2 eXtended Module (Ogg compressed)	10
OXO	PhoXo image	5
OXP	OmniRush eXtended Package	6
OXPS/XPS	Open XML Paper Specification	66
OXT	OpenOffice Extension	13	Stef
OXT	OpenOffice Extension (Dictionary)	7
OXYGENE	Oxygene Project	5
OXYGENE	Oxygene Project (UTF-8)	10
OZB	Mu Online Bitmap	3
OZF	Mozart functor	132
OZF2	OziExplorer Map	11
OZFX3	OziExplorer Map	3
OZIP	OPPO firmware update (encrypted)	8
OZP	Mu Online Navimap	86
OZV	ORTIM Zeit project	6	Scrapie

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