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File extensions

How many of these file extensions can you name?
A file extension is the part after the dot in a filename, such as .txt in README.txt
Source: Wikipedia list
Quiz by BunnyWabbit
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Last updated: September 19, 2023
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First submittedSeptember 19, 2023
Times taken17
Average score26.5%
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Adobe
Extension
Description
AI
Adobe Illustrator artwork
PDF
Adobe's Portable Document Format
PSD
Photoshop native file format
Audio
Extension
Description
AIFF
Audio Interchange File Format
M3U8
MPEG Audio Layer 3 Uniform Resource Locator playlist, using UTF-8 encoding
M4A
MPEG-4 Part 14 audio
MID
Standard MIDI file
MP3
MPEG audio stream, layer 3
OGG
Vorbis audio in the Ogg container format
WAV
Sound format (Microsoft Windows RIFF WAVE)
XMF
eXtensible Music Format
Code
Extension
Description
BIN
Binary file
CSS
Cascading Style Sheet
HTML
Hypertext Markup Language
JAVA
Java source code file
JAR
Java archive
JS
JavaScript file
JSON
JavaScript Object Notation
PHP
PHP file
PY
Python script file
SQL
Structured Query Language
TS
TypeScript
XML
eXtensible Markup Language file
Image
Extension
Description
GIF
Compuserves' Graphics Interchange Format
JPG
Joint Photographic Group
PNG
Portable Network Graphics file
SPIFF
Still Picture Interchange File Format
SVG
Scalable Vector Graphics
THM
Thumbnail File
TIFF
Tag Image File Format image
Microsoft
Extension
Description
DOCX
Microsoft Word Document
PPTX
MS Office Open-XML Presentation
XLS
Microsoft Excel Spreadsheet
Other
Extension
Description
DAT
Data file
EXE
Directly executable program
RAR
Archive
TAR
ZIP
TMP
Temporary file
URL
Remote file shortcut
Text
Extension
Description
CSV
Comma Separated Values
MD
Markdown-formatted text file
TSV
Tab-separated values
Video
Extension
Description
M4V
MPEG-4 Part 14 video, which may optionally be encumbered by FairPlay DRM
MOV
Animation format (Mac)
MP4
multimedia container format, MPEG 4 Part 14
MPEG
multimedia container format
MXF
Material exchange format (RFC 4539, SMPTE 377M)
WEBM
Royalty-free video/audio container
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