What is a file extension?
The file extension is a suffix added to the file name, indicating the type of file that holds distinct content. This extension is separated by a dot (.) from the given file name.
Syntax:
filename.extension
The extension typically consists of three or more characters. Operating systems and software utilize the extension to identify the file type and determine which application should be used to open or process the file.
For instance, consider the file named README.md. In this example, “README” is the file name, and “MD” is the extension. The extension indicates that it is a Markdown document.
In Windows, the system uses the file extension to associate it with an application or software for modification or opening purposes.
File extension types
There are various extensions categorized based on their types. Here are just a few examples:
Text Files
.txt: Plain Text Files.csv: Comma Separated Value files.json: javascript object notation files.toml: Tom’s Obvious Minimal Language files.ini: javascript object notation files.yaml: javascript object notation files.properties: javascript object notation files.ini: javascript object notation files.html: javascript object notation files.xml: javascript object notation files.md: markdown files
Document Files
.ppt: Microsoft Powerpoint.doc: Microsoft Word Document.docx: Microsoft Open XML Document.pdf: Portable Document format.xls: Microftw Spreadsheet.xlsx: Open Spreadsheet files
Executable file types:
.bat: batch files in Windows.app: Application bundle in MacOS.exe: Executable file in Windows.sh: Shell Script in Linux & Unix
Image file types
.png: Portable Network Graphic format image.jpgor.jpeg: Joint Photographic Experts Group image format.bmp: Bitmap image format file.webp: Bitmap image format file.svg: Scalable Vector Graphics format.avif: AV1 Image File Format
Video
.mkv- Matroska video file.mp4- MPEG-4 video file.avi: Audio Video Interleave format
Audio types: mp4,avi,mp3
.mp3- MPEG Audio Layer III file.wav- Waveform audio file
File Extension Tutorials
It is an index page for the list of tutorials for file extension.
| File Type | Description |
|---|---|
| yaml | Yaml extension tutorials validation examples |
| markdown | markdown extension tutorials validation examples |
| toml | toml extension tutorials validation examples |
| xml | xml extension tutorials validation examples |
| json | json extension tutorials validation examples |
| ini | ini extension tutorials validation examples |
| properties | properties extension tutorials validation examples |
| hocon | hocon extension tutorials validation examples |
| csv | csv extension tutorials validation examples |
What is the difference between ini files and property files
Both types allow you to have key and value configurations.
key=value
Ini file has sections enclosed in square brackets [] and properties do not allow sections.
[dev]
isProd=false
[prod]
isProd=true
In the case of properties, values with duplicate keys are overridden. If the key value is repeated multiple times, the last key value is considered
name=john
name=Eric
name=Mark
During reading, the name value is considered as the mark.
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CSV File - Getting Started
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CSV - Python Read & Write
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CSV File - Comments
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CSV File - Components
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CSV File - Sample
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RSS - Getting Started
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RSS - Structure
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