What is a TAR file?

The TAR format in brief: what it is, what it is used for, and how to convert it.

TAR: conversion steps

  1. Upload your TAR file to start.
  2. Convert TAR to bzip2.
  3. Download the TAR file.

About TAR files

an uncompressed Unix archive

TAR (tape archive) bundles many files and folders into one file and keeps their Unix permissions, but it does not compress them.

Backups and software distribution on Linux and macOS, usually combined with gzip, bzip2 or xz.

TAR: what conversion changes

Converting TAR repacks losslessly.

TAR: settings to change

Before you convert TAR files, you can adjust: Compression level, Split size, Password, and Root folder.

Limits of the TAR format

A plain .tar file is about as large as the files inside, because no compression is applied.

Common questions about TAR

Why is my TAR file exactly the same size as its contents? TAR only bundles files together — it compresses nothing — so a 500 MB folder becomes a 500 MB archive until a compressor like gzip gets involved.

Why convert archives to TAR? For Linux and macOS servers, where TAR bundles preserve Unix permissions and directory structures exactly.

Convert TAR files

Guides and tools for TAR