File Extension Matcher — TechKnowSurge

About this interactive

File extensions tell you what kind of data a file holds and which application can open it. This matching activity draws from a pool of the most common extensions students encounter — from Word documents to video files to executables — and ties each one to its file type category. Each run presents a fresh selection, so a second attempt is a different exercise rather than the same list reshuffled. It's a quick, repeatable way to build the pattern recognition that makes navigating real file systems feel natural.

What you'll learn

Match common file extensions (.docx, .xlsx, .pptx, .pdf, .txt, .csv, .png, .jpg, .svg, .mp4, .mp3, .html, .zip, .iso, .exe, .msi) to their correct file type category or description
Recognize how a file's extension signals its format, application, and intended use
Distinguish between document, media, executable, image, archive, and data file types by extension

Key terms

File Extension: A suffix appended to a filename after a period that identifies the file format and tells the operating system which program to use to open it.
File Type: The category of data a file holds — document, image, video, executable, archive, or data — signalled by its extension and used by the operating system to choose which program opens it.
Executable: A file type that launches a program installation or application when run on a Windows system.
Compressed Archive: A single file that bundles one or more files together and stores them in compressed form to reduce their total size, such as a .zip, .tar.gz, or .7z file. Its contents must be extracted before they can be used.

Topics

Matching Interactive

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