| File extension | The full name of the file |
|---|---|
| File extension H | C/C++ Header Format |
| File extension H++ | Unusual C++ Header |
| File extension H-263 | H.263 Encoded Video |
| File extension H263 | H.263 Encoded Video |
| File extension H0 | Magix Music Studio Format |
| File extension H00 | ARM EPROM HEX |
| File extension H01 | ARM EPROM HEX |
| File extension H04 | GE FIX32 Historical |
| File extension H08 | GE FIX32 Historical |
| File extension H10 | At Home Canada 2010 Tax Return Format |
| File extension H11 | At Home 2011 Tax Return Format |
| File extension H12 | At Home 2012 Tax Return Format |
| File extension H1C | Windows Vista File Related To Assistance Platform (AP) Help |
| File extension H1D | Microsoft Windows |
| File extension H1F | Microsoft Windows Assistance Platform Client Help |
| File extension H1H | Microsoft Windows Merged Hierarchy Help |
| File extension H1K | Keyword Index - Microsoft Windows Assistance Platform Client Help Related |
| File extension H1Q | Microsoft Help Merged Query Index Format |
| File extension H1S | Microsoft Windows Assistance Platform Client Help Format |
| File extension H1T | Microsoft Windows Assistance Platform Client Help Related |
| File extension H1V | Task Metadata - Microsoft Windows Assistance Platform Client Help Related |
| File extension H1W | Microsoft Windows Keyword Index |
| File extension H260 | Video Recording |
| File extension H261 | H.261 Video Format |
| File extension H263 | H.263 Video Format |
| File extension H264 | H.264 Video Format |
| File extension H2DRUMKIT | Hydrogen Drum Kit |
| File extension H2O | Battle Realms Game Data Format |
| File extension H2P | Zebra Preset |
| File extension H2SONG | Hydrogen Drum Notes |
| File extension H2W | H2testw |
| File extension H3B | POD HD300 Bundle |
| File extension H3C | Heroes Of Might And Magic 3 Campaign |
| File extension H3D | Altair HyperView 3D Model |
| File extension H3E | POD HD300 Preset |
| File extension H3M | Heroes Of Might And Magic 3 Map Format |
| File extension H4B | POD HD400 Bundle |
| File extension H4E | POD HD400 Preset |
| File extension H4M | Resident Evil Zero Game |
| File extension H4R | Heroes Of Might And Magic 4 Data Format |
| File extension H5 | Hierarchical Data Format Version 5 |
| File extension H5E | POD HD500 Preset |
| File extension H5S | POD HD500 Set |
| File extension H86 | CP/M |
| File extension HA | HA Compressed Archive |
| File extension HAK | BioWare Aurora Engine |
| File extension HAL | HansaWorld Enterprise HAL Code Format |
| File extension HAM | Descent 2 Resource Format |
| File extension HAML | HTML Abstraction Markup Language |
| File extension HANDLEBARS | Handlebars Template |
| File extension HANG | Apple Mac OS X Terminal |
| File extension HAP | HAP Compressed File Archive |
| File extension HAR | E-Sword Harmony Resource |
| File extension HARDDISK | Boxer For Mac Harddisk |
| File extension HARX | E-sword Harmony |
| File extension HAS | Haskell Script Format |
| File extension HASH | EnCase Forensic Drive Image Hash |
| File extension HAT | Formula 1 Car Race 2001 Log Hat |
| File extension HATHDL | Hentai@Home Download |
| File extension HAV | Video Recorder Video |
| File extension HAZ | Microsoft Flight Texture |
| File extension HBC | HyperBac Compressed Archive Format |
| File extension HBC2 | HyperBac Compressed Archive |
| File extension HBE | HyperBac Compressed/encrypted Archive |
| File extension HBK | Mathcad Handbook Format |
| File extension HBM | Hibernate Script |
| File extension HBN | Java Hibernate |
| File extension HBR | HaxBall Replay |
| File extension HBX | BinHex Compressed File ASCII Archive |
| File extension HBZ | StarMoney Macro |
| File extension HCB | HyperOS Compressed Backup |
| File extension HCC | HydroCAD Storage Chamber Definition Format |
| File extension HCE | HydroCAD Hydrograph Data Format |
| File extension HCF | Compact Ham Library |
| File extension HCFG | HoDokK Configuration |
| File extension HCG | HClab Chart |
| File extension HCI | HydroCAD IDF Data Format |
| File extension HCL | HotDocs Library Format |
| File extension HCOM | Sound Tools HCOM Audio |
| File extension HCP | HydroCAD Project Format |
| File extension HCR | HydroCAD Stormwater Modeling System Rainfall Definition |
| File extension HCS | NHP ESubmission Builder Submission Package |
| File extension HCT | Symantec LiveUpdate |
| File extension HCU | HydroCAD Hydrograph Units Definitions Format |
| File extension HCW | HTML Help Workshop Conversion Wizard Macro |
| File extension HCX | Harvard ChartXL Chart Format |
| File extension HD2 | Poser Hand Pose Format |
| File extension HDA | HotDocs Document File Format |
| File extension HDB | HansaWorld Enterprise Database Format |
| File extension HDC | HD Tach Benchmark |
| File extension HDD | Parallels Workstation Virtual Hard Disk Format |
| File extension HDE | NAUPA File Encryptor Encrypted |
| File extension HDF | Hierarchical Data Format |
| File extension HDF4 | HDF4 |
| File extension HDF5 | HDF5 |
| File extension HDI | Autodesk AutoCAD Heidi Device Interface |
| File extension HDK | HotDocs Registration Format |
| File extension HDL | Procomm Plus Alternate Download Format Listing Format |
| File extension HDM | HDML Handheld Device Markup Language Format |
| File extension HDML | Handheld Device Markup Language |
| File extension HDMOV | Apple QuickTime HD Movie Format |
| File extension HDMP | Microsoft Windows Heap Dump Format |
| File extension HDP | HD Photo |
| File extension HDPMX | HotDocs Publisher Mapping XML Format |
| File extension HDR | High Dynamic Range Image Format |
| File extension HDRP | HDRtist Graphic Format |
| File extension HDRU | Apollo HRDU Image Format |
| File extension HDS | Windows Digital Right Management Format |
| File extension HDT | Photoshop HDR Toning Preset Format |
| File extension HDUMX | HotDocs User Mapping XML Format |
| File extension HDV | High Definition Video Format |
| File extension HDX | Delphi MultiHelp Index Format |
| File extension HDZ | Poser Compressed Hand Pose Format |
| File extension HE4 | HDF4 |
| File extension HEA | Fifa 2001 Data |
| File extension HEARTSSAVE-MS | Hearts Saved Game Format |
| File extension HEB | DEcomp 3D Scene Data |
| File extension HED | Hi-Eddi Image |
| File extension HEF | HEAT Export |
| File extension HELP | Unix Help Format |
| File extension HELPCFG | Adobe AIR Help Configuration |
| File extension HELPINDEX | Mariner Software Narrator Index |
| File extension HEP | Novell NetWare Help Librarian Data |
| File extension HES | TurboGrafx-16 Audio |
| File extension HET | WinSQL HTML Export Template |
| File extension HEU | Adobe Flash Player Cache Metadata |
| File extension HEX | Hex Dump Format |
| File extension HF | HF Image Format |
| File extension HFA | Erdas Imagine Hierarchical |
| File extension HFB | Hell Fighter Battle |
| File extension HFC | H-JTAG Configuration |
| File extension HFD | HotDocs Form Document Format |
| File extension HFMX | HFM.NET Configuration |
| File extension HFO | Pinnacle Hollywood FX Object |
| File extension HFP | XnView Filter |
| File extension HFS | MacImage Macintosh HFS Disk Image Format |
| File extension HFSS | Ansoft HFSS Project |
| File extension HFT | HaftiX Cross-stitch Pattern |
| File extension HFV | Virtual Mac Hard Drive Format |
| File extension HFX | Harvard Graphics F/X |
| File extension HG | HP Graphics Language |
| File extension HG1 | Hellgate: London Saved Game |
| File extension HGD | IP Camera Video |
| File extension HGH | Star Wars: Tie Fighter High Score |
| File extension HGL | Hewlett-Packard Graphics Language Format |
| File extension HGP | HighGrow Plant |
| File extension HGS | Harvard Graphics Graphic |
| File extension HGT | Shuttle Radar Topography Mission Data SRTM Format |
| File extension HGZ | ArcMap GIS |
| File extension HH | C++ Header Format |
| File extension HHC | HTML Help Table Of Contents Format |
| File extension HHH | Power C Precompiled Header Format |
| File extension HHK | Microsoft HTML Help Index Format |
| File extension HHL | Visual Basic |
| File extension HHP | Microsoft HTML Help Project |
| File extension HHPACK | HTC Home Extension |
| File extension HHS | Microsoft HTML Help Workshop Sample |
| File extension HHSL | Hockey High Score List Format |
| File extension HHT | Microsoft Help And Support Center HHT Format |
| File extension HI | High Scores Format |
| File extension HIC | HicEst Script |
| File extension HID | Sony Ericsson Configuration Archive Format |
| File extension HID2 | KeepSafe Encrypted |
| File extension HIF | Quicken Online Format |
| File extension HIL | Deluxe Ski Jump 3 Hill |
| File extension HIM | ROSE Online Highmaps |
| File extension HIN | HyperChem HIN Chemical Modeller Input |
| File extension HIP | Houdini Project Format |
| File extension HIPNC | Houdini Apprentice Format |
| File extension HIPS | Bitmap |
| File extension HIR | Hires C64 Image Format |
| File extension HIS | FindinSite Database Definition Format |
| File extension HISAWSAVE | Nancy Drew Saved Game |
| File extension HISF | DL_POLY History |
| File extension HISTORY | Eclipse IDE Local History |
| File extension HISU | DL_POLY History |
| File extension HIT | The Sims Sound Format |
| File extension HIV | Windows NT Registry Hive |
| File extension HJT | TreePad Editor Format |
| File extension HKC | HTML-KIT Auto Complete Short Cut |
| File extension HKDB | Apple ITunes Database Format |
| File extension HKE | Painkiller Overdose Game |
| File extension HKF | Microsoft.NET Framework |
| File extension HKI | WinHKI Compressed Archive Format |
| File extension HKI1 | WinHKI HKI1 Compressed Archive Format |
| File extension HKI2 | WinHKI HKI2 Compressed Archive Format |
| File extension HKI3 | WinHKI HKI3 Compressed Archive Format |
| File extension HKL | RMCProfile Range Of Values |
| File extension HKM | Havok Movie Format |
| File extension HKS | HTML-KIT Plugin |
| File extension HKX | Skyrim Animation |
| File extension HL | HeuristicLab Storage Format |
| File extension HL$ | MS-DOS Compressed Help |
| File extension HL1 | Half-Life Saved Game |
| File extension HL6 | Horizontal.Log 6 |
| File extension HLA | High Level Assembler Source |
| File extension HLB | VAX VMS Help Library Format |
| File extension HLC | ESO MIDAS Help Command |
| File extension HLD | Structural Desktop Hold |
| File extension HLF | FAR Manager Help |
| File extension HLK | Warhammer 40k Dawn Of War 2 Animation |
| File extension HLN | MicroStation Hidden Line |
| File extension HLOG | VMware Workstation Log |
| File extension HLP | Help Format |
| File extension HLQ | ESO MIDAS Help Qualifier |
| File extension HLSL | High Level Shader Language Source Code Format |
| File extension HLT | Watcher Database Trades List |
| File extension HLW | Win32/AMalum.EDHZ |
| File extension HLX | ATI Radeon Video Driver Format |
| File extension HLZ | MultiEdit Packed Help |
| File extension HM | Windows Help Context IDs |
| File extension HM0 | MAGIX Audio Cleaning Lab Waveform |
| File extension HM2 | Help & Manual Help File Project |
| File extension HM3 | Help & Manual Help File Project |
| File extension HMA | Sony MiniDisc Audio Format |
| File extension HMAP | Microsoft SharePoint Server 2007 Temporary |
| File extension HMAPDIR | Microsoft SharePoint Server 2007 Temporary |
| File extension HMAX | Custom 3ds Max Format |
| File extension HMD | SWAT Relative Humidity Input |
| File extension HME | Smartphone Theme Format |
| File extension HMF | HOOPS Metafile |
| File extension HMGD | Microsoft Grammar |
| File extension HMHD | Word Hyphenation Format |
| File extension HMI | HMI Audio Format |
| File extension HMK | Hallmark Card Studio Card Format |
| File extension HML | HostMonitor TestList Format |
| File extension HMMER | SAM HMMER Format |
| File extension HMMR | SAM HMMR |
| File extension HMP | Worms Height Map Format |
| File extension HMS | HostMonitor Script Format |
| File extension HMSD | Microsoft Dictionary |
| File extension HMSKIN | Help & Manual Help File Skin |
| File extension HMT | HighMAT Format |
| File extension HMX | Help & Manual Help File Project |
| File extension HMXP | Help & Manual Help File Uncompressed XML Project |
| File extension HMXZ | Help & Manual Help File Compressed XML Project |
| File extension HMY | Hemingway Content Management System Plugin |
| File extension HM~ | Help&Manual Help Project Backup |
| File extension HNC | NoteCenter Note |
| File extension HND | HNSKY Deep Sky Database |
| File extension HNF | HNF Split & Merge Channels |
| File extension HNR | Teleatlas |
| File extension HOB | Star Trek Birth Of The Federation Ship Graphic Data |
| File extension HOD | Homeworld Object Data |
| File extension HOG | Descent Hog Format |
| File extension HOGG | Cryptic Studios Data |
| File extension HOL | Microsoft Outlook Holiday Calendar Format |
| File extension HONMOD | Heroes Of Newerth Mod Format |
| File extension HOP | Hippon Protected |
| File extension HOT | The Sims Sound Format |
| File extension HOTSPOT | Homeworld Cursor Informaiton |
| File extension HP | HP Graphics Language Plotter |
| File extension HP1 | HP Graphics Language Plotter |
| File extension HP2 | HP Graphics Language Plotter |
| File extension HP? | LoseThos C+ Header |
| File extension HPC | System Dynamic Library |
| File extension HPD | HotDocs PDF Document Format |
| File extension HPF | High Performance FORTRAN Format |
| File extension HPFS | OS/2 High Performance File System |
| File extension HPG | HP Graphics Language Plotter Format |
| File extension HPGL | Hewlett Packard Graphics Language Plot Format |
| File extension HPGL2 | Hewlett Packard Graphics Language 2 |
| File extension HPI | Hemera Photo Image Format |
| File extension HPJ | Microsoft Win Help Project Format |
| File extension HPK | Haemimont Games Game Package Format |
| File extension HPL | Hewlett-Packard LaserJet Vector Image Format |
| File extension HPLG | Apple ITunes Device Plugin |
| File extension HPM | Procomm Plus Alternate Main Menu |
| File extension HPO | HippoDraw Canvas Document |
| File extension HPP | C++ Header Format |
| File extension HPR | RoboHelp Settings |
| File extension HPRJ | Heroglyph Project |
| File extension HPROF | Java Heap Dump |
| File extension HPS | HPL2 Script |
| File extension HPT | HotDocs PDF Template Format |
| File extension HPX | MetaVR 3D Model |
| File extension HPZ | Helpinator Project |
| File extension HQF | QuiltCAD Stitch |
| File extension HQR | Little Big Adventure HQR |
| File extension HQX | Macintosh BinHex Archive |
| File extension HR | TRS 80 Image File Format |
| File extension HR2 | Poser Hair Format |
| File extension HRC | Autodesk Softimage Model 3D |
| File extension HRD | MSC Patran Device-dependent Hardcopy |
| File extension HRF | Hitachi CADCore Raster Format |
| File extension HRL | Erlang Source Or Script Format |
| File extension HRM | Polar ProTrainer Pulse Rate Save |
| File extension HRS | Holder Reporting System |
| File extension HRU | HRU Image Format |
| File extension HRX | Herolab EasyWin32 |
| File extension HRZ | Poser Compressed Hair Format |
| File extension HS | Literate Haskell Source Code Or Script Format |
| File extension HS2 | HyperRESEARCH Postering Monochrome Image Format |
| File extension HSB | HALion Sampler Format |
| File extension HSC | Aspen HYSYS Simulation Format |
| File extension HSE | Adobe Dreamweaver Snippet |
| File extension HSF | HOOPS Stream Format |
| File extension HSH | Windows Catalog Search Index Format |
| File extension HSI | Handmade Software Bitmap Image |
| File extension HSK | Nimbus 7 SAMS Data Format |
| File extension HSM | The Sims Sound |
| File extension HSP | HSC Composer Packed By Number Six |
| File extension HSQL | HtmSQL Html |
| File extension HSR | RezeptAssist Import Or Export |
| File extension HSS | Adobe Dreamweaver Snippet |
| File extension HST | Yahooo Messenger History Format |
| File extension HSTX | Altair HyperStudy Package |
| File extension HSV | Diablo: Hellfire Singleplayer Character Data |
| File extension HSX | Health & Safety Xpert Project |
| File extension HT | HyperTerminal Session Format |
| File extension HT1 | Google Desktop Application Data |
| File extension HT4 | HTML Version 4 |
| File extension HTA | HTML Program Format |
| File extension HTACCESS | Apache Access Configuration Format |
| File extension HTB | Audacity Help Format |
| File extension HTC | HTML Component Format |
| File extension HTD | Adobe ExtendScript HTML |
| File extension HTG | HackTheGame Mission Pack Format |
| File extension HTGROUP | Apache Server User Group |
| File extension HTI | Microsoft Windows WinHelp Related |
| File extension HTK | Hidden Markov Model Toolkit Speech Recognition |
| File extension HTM | HTML Hypertext Markup Language Web Page Format |
| File extension HTML | HTML Hypertext Markup Language Web Page Format |
| File extension HTML0 | Book Designer E-book Format |
| File extension HTML5 | HTML5 Hypertext Markup Language Revision 5 Source |
| File extension HTMLENX | Egis Encrypted HTML |
| File extension HTMLS | HyperText Markup Language Document With Server-side Include |
| File extension HTMLZ | Zipped HTML Format |
| File extension HTMS | PHP HTML Document |
| File extension HTN | Micrografx Picture Publisher 8 Print Style |
| File extension HTP | Autodesk Slope Template Definition |
| File extension HTPASSWD | Apache Access Configuration Format |
| File extension HTPL | IBM Rational Application Developer WebContent Theme |
| File extension HTR | Microsoft Windows NT Password Services Script |
| File extension HTRI | HTRI Xchanger Suite Data Input |
| File extension HTT | Microsoft HyperText Template Format |
| File extension HTW | Windows |
| File extension HTX | Microsoft FrontPage Database Results |
| File extension HTXT | Hanvon WISEreader E-book Format |
| File extension HTZ4 | HyperMaker Publication Format |
| File extension HTZ5 | HyperMaker Document Format |
| File extension HUD | SmartWare Dictionary |
| File extension HUH | HydroCAD Unit Hydrograph Definitions Format |
| File extension HUL | Re-Volt Collision Data |
| File extension HULL | Half-Life Map Collision Hull |
| File extension HUN | Personal Paint Hungarian Language User Interface |
| File extension HUP | Haihaisoft DRM-X Protected Video |
| File extension HUS | Husqvarna Embroidery Format |
| File extension HUV | Husqvarna Viking Designer Graphic |
| File extension HV | Microsoft Windows Mobile Hive |
| File extension HVA | Command And Conquer Tiberian Sun Voxel Animation Control |
| File extension HVC | ASCII Format |
| File extension HVD | HoverDesk Theme |
| File extension HVIF | Haiku Vector Icon Format |
| File extension HVL | Commodore Amiga HivelyTracker Audio Module |
| File extension HVPL | Apple ITunes Visual Plugin Format |
| File extension HWD | Hedgewars Game Replay Format |
| File extension HWL | Corel WordPerfect Shared Writing Tools 9.0 |
| File extension HWMAP | Hedgewars Drawn Map Format |
| File extension HWOF | Microsoft Office For Mac Help |
| File extension HWP | Hangul Document Format |
| File extension HWS | Hedgewars Saved Game Format |
| File extension HWT | Huawei Ascend P6 Emotion UI Theme |
| File extension HWX | RSNetWorx Registration |
| File extension HX | Haxe Source Code |
| File extension HXA | Microsoft Help Attribute Definition Format |
| File extension HXC | Microsoft Visual Studio Collection Definition Format |
| File extension HXD | Microsoft Help Validator |
| File extension HXE | Microsoft Help 2 Sample Definition Format |
| File extension HXF | Microsoft Help Include |
| File extension HXH | Microsoft Help Merged Hierarchy |
| File extension HXI | Microsoft Help Compiled Storage |
| File extension HXK | Microsoft Help 2 Keyword Index Format |
| File extension HXL | Microsoft Help Registered Namespace List |
| File extension HXM | Descent 2 Resource Modification Format |
| File extension HXML | HaXe Make |
| File extension HXN | Hexagon Model Format |
| File extension HXP | HaXe Project |
| File extension HXPROJ | FlashDevelop Flash Project |
| File extension HXR | Microsoft Help Data |
| File extension HXS | Microsoft Help Compiled Storage Format |
| File extension HXT | Help Table Of Contents Format |
| File extension HXV | Microsoft Help Virtual Topic Definition |
| File extension HXW | Microsoft Help Attribute Definition |
| File extension HXX | C++ Header Format |
| File extension HY1 | Ventura Publisher Hyphenation Algorithm |
| File extension HY2 | Ventura Publisher Hyphenation Algorithms |
| File extension HYC | Corel WordPerfect Data |
| File extension HYD | Corel WordPerfect Hyphenation Dictionary |
| File extension HYDRA | Hydra Image Filter Program Format |
| File extension HYM | Hymarc Scandata Scanner 3D Image Binary |
| File extension HYP | Adobe Acrobat Dictionary Format |
| File extension HYPE | Hype Web Project Format |
| File extension HYQ | CARE-S InfoWorks Hydrograph |
| File extension HYV | HY-TEK Sports Team Manager Meet Event Format |
| File extension HZ | Chinese (Hanzi) Text |
| File extension HZD | SeisWorks |
| File extension H_ | Microsoft Winhelp Compressed |
| File extension H__ | C++ Header |
File extensions in alphabetical order: H
The list of file extensions, sorted alphabetically, beginning with the letter H