Skip to content
Applications of ICT
File Management
File Compression Formats

Understanding Common File Compression Formats and Their Applications

📝 Cheat Sheet

File Compression Formats

Each compression format has a specific purpose and set of use cases. There are 6 common formats to know:

  1. ZIP: works on all operating systems; used for everyday compression, file sharing, and email attachments.
  2. ISO: an exact copy of an optical disc; used for software and game distribution; can be mounted as a virtual drive.
  3. RAR (Roshal Archive): high compression ratio; used for large archives and split archives; requires WinRAR to open.
  4. TAR (Tape Archive): groups multiple files without compressing them; common in Unix/Linux; often paired with GZIP as .tar.gz.
  5. 7z: high-efficiency compression with encryption support; associated with 7-Zip software.
  6. GZIP (GNU Zip): compresses web pages and scripts for faster loading; often paired with TAR in Unix-like systems.

Below is a list of common compression formats, their abbreviations, and where they are typically used:

❓ Pop Quiz
A Linux administrator needs to group multiple files into one archive and then compress them for web use. Which combination of formats is commonly used for this?

ZIP

  • Abbreviation: ZIP comes from the word “zip,” meaning speed and efficiency.
  • Application: ZIP files work on all operating systems (Windows, macOS, Linux). They are useful for everyday compression tasks, such as combining files for sharing or sending as email attachments.

ISO

  • Abbreviation: ISO refers to the International Organization for Standardization. It is linked to optical disc image files.
  • Application: ISO files are used for software and game distribution. These files are exact virtual copies of optical discs. They can be mounted as virtual drives or burned onto physical media.
Flashcard
What is an ISO file?
Tap to reveal
Answer

An exact virtual copy of an optical disc (CD, DVD, or Blu-ray).

  • Used for software and game distribution
  • Can be mounted as a virtual drive on Windows
  • Does not require burning to physical media

RAR

  • Abbreviation: RAR stands for Roshal Archive, named after its creator, Eugene Roshal.
  • Application: RAR files achieve high compression ratios. They are common for archiving large file collections or creating split archives. Software like WinRAR is needed to open these files.

TAR

  • Abbreviation: TAR stands for Tape Archive.
  • Application: TAR is common in Unix and Linux systems. It groups multiple files into a single archive without compressing them. It is often paired with GZIP or BZIP2, creating formats like .tar.gz or .tar.bz2.
❓ Pop Quiz
Which compression format requires WinRAR to open and is commonly used for large archives?

7z

  • Abbreviation: 7z does not stand for anything specific. It is associated with the 7-Zip software.
  • Application: This format offers strong compression and is used when high efficiency is needed. It can compress large files significantly and supports encryption.

GZIP

  • Abbreviation: GZIP stands for GNU Zip.
  • Application: GZIP compresses web content for faster delivery. It reduces the size of web pages and scripts to improve load times. It is often paired with TAR to compress multiple files in Unix-like systems.
Flashcard
What does TAR do, and how is it different from ZIP?
Tap to reveal
Answer

TAR groups multiple files into a single archive without compressing them.

ZIP compresses and bundles files together.

TAR is common in Unix/Linux. It is usually paired with GZIP (.tar.gz) to also compress the archive.

Last updated on • Talha
Lossy vs Lossless CompressionFormats vs Software