Struggling to Identify File Extensions? Here's a Handy List to Help You Out

Dear All,

There are times when we find it hard to find the extension of files. Please find attached a list which might be helpful.

Enjoy!
Puffs

Hello friends,

Good Morning. Here I am providing some more file extensions related to 3D graphics, CAD-CAM, archive, compressed, audio, music, backup, binary, bitmap images, configuration, database, disk image, document, font, game, graphic, internet-related, movie, video, multimedia, Office 2007 document, plugin, program executable, settings, temporary, text, and vector graphic file types.

3D Graphics, CAD-CAM Filename Extensions:
- .2d: Two-dimensional drawing file
- .3d: Three-dimensional drawing file
- .3dm: 3D NURBS modeler
- .3dmf: 3D MetaFile for Quickdraw 3D (MacOS)
- .3ds: 3D graphics file
- .amb: Radiance ambient file
- .c4d: CINEMA 4D file format
- .dae: Collada file
- .dwg: AutoCAD Drawing
- .dxf: AutoCad Drawing eXchange Format
- .igs: International Graphics Exchange Standard file format
- .mc9: Mastercam V9 file format
- .mdl: 3D GameStudio Model Entity
- .par: An older version of Solid Edge part file
- .prt: PTC Pro-Engineer Part file
- .sldasm: Solidworks File
- .sldprt: SolidWorks drawing 3D (Vector graphics)
- .vcd: VisualCADD Drawing File

Archive and Compressed Filename Extensions:
- .001: Compressed file from a multi-volume archive
- .7-zip: 7z compressed archive file
- .ace: Compressed file archive
- .cab: Windows Cabinet Compressed Archive
- .gz: GZIP compressed archive file
- .img: Floppy Image image file
- .iso: CD/DVD ISO binary image file
- .zip: Compressed ZIP archive file

Audio and Music Filename Extensions:
- .aac: Advanced audio coding
- .aif: Audio Interchange File Format sound file
- .amr: Adaptive Multi-Rate compressed audio
- .flac: Audio files encoded by Flac - free lossless audio codec
- .mp3: Compressed audio, music file
- .wav: WAVe PCM Sound, standard Windows sound format

Backup Filename Extensions:
- .bak: Backup file
- .chk: File fragments saved by ScanDisk, CHKDSK, or Windows Disk Defragmenter
- .iso: CD/DVD ISO binary image file

Binary Filename Extensions:
- .bin: Binary file
- .dmg: Oracle binary format dump file
- .dmp: Memory dump, screen dump, junk files

Please let me know if you need more information on any specific file types.

Best regards,
Hanuma

Thank you for the document. It is very simple to use and contains all the information one may need regarding file types. I would like to inquire if you considered adding "MIME File Type" as another suitable field to include in the table? This could be similar to the format used on the freformatter.com page (I have saved the complete list in the attached PDF document).

The "MIME File Type" might seem a bit extra, but it is crucial information when adjusting Default Program Settings on Windows computers. This knowledge becomes especially important when encountering two files with identical file extensions, but Windows opens different programs for each file!

XML documents serve as a good example of this scenario. The XML format, along with its native settings and metadata, is not limited to any specific program, software package, or operating system. XML files are encoded in Windows 1252, ISO-8859-1, and US-ASCII. Additionally, XML data can be saved as .xsl, .xhtml, .dtd, and .wpl file formats. A "MIME File Type" can guide Windows on which program to use when opening a file for the first time on a computer, or if there isn’t a default program assigned to the file’s extension.