How Compression Works Inside EPUB, DOCX, XLSX, and PPTX?
Last Updated: 10 September, 2026
How Compression Works Inside EPUB, DOCX, XLSX, and PPTX If you rename a .docx, .xlsx, .pptx, or .epub file to .zip and double-click it, something surprising happens: it doesn’t throw an error. Your operating system opens it as a folder packed with subdirectories, XML configuration files, styling sheets, fonts, and embedded images.
Modern document architectures abandoned monolithic binary blobs decades ago. In their place, industry standards—namely Open Packaging Conventions (OPC) for Microsoft Office and the Open Container Format (OCF) for EPUB—adopted a surprisingly elegant foundation: the humble ZIP archive.
ZIP vs 7Z vs TAR.GZ: Which Compression Format Should You Use?
Last Updated: 31 August, 2026
ZIP vs 7Z vs TAR.GZ: The Ultimate Compression Format Comparison Whether you are archiving family photos, deploying code to a production server, or emailing batch documents to a client, compression formats are part of daily computing. Yet most people stick to whatever their operating system opens by default—usually .zip—without realizing they could save gigabytes of storage space or shave minutes off data transfer times.
When choosing between ZIP, 7Z, and TAR.
Compare Lossless vs. Lossy Compression: How to Choose the Right One?
Last Updated: 02 Sep, 2025
Ever tried to send a huge video file and been told it’s too large? Or wondered why your favorite music streaming service lets you download thousands of songs on a phone with limited space? The secret sauce behind all of this is data compression. Compression is the digital magic of making files smaller. But not all compression is created equal. The two main families Lossless and Lossy work in fundamentally different ways and serve very different purposes.
The 7 Best Tools to Open or Extract RAR Files
Are you unsure how to open a RAR file and extract its contents? Here, we will showcase the best RAR extraction tools that meet your needs. Top 7 Tools for Opening RAR Files RAR is a popular file format. If you have a RAR file and you don’t know how to extract its contents, the list provided below can help you. All the RAR openers listed are user-friendly and easy to use.
Understanding 7z file format - Comprehensive Guide and FAQs
Last Updated: 21 Feb, 2025
Table of Contents In this blog, we will cover the following topics.
What is a 7z file? Features of 7z Compression Methods of 7z Comparison of 7z with other Compression Formats How to open a 7z file? FAQs What is a 7z file? 7z is a file format primarily utilized for archiving and compressing files. It is renowned for its exceptional compression ratio, which enables significant reduction in file size while maintaining the integrity of their content.
ZIP Bombs – Exploding Your Storage
A zip bomb is a compressed ZIP archive file that halts or crashes the system which reads it. The decompression software, when uncompresses such an archive file, takes an enormous amount of disk space, processing time, or memory. This makes the executing system go out of resources and crash eventually. One such example of ZIP Bomb files is 42.zip compressed archive whose size is 42 kilobytes but expands to 4.
Compression Algorithms – A Brief Compendium
Today’s digital world connects everyone using handheld devices such as mobile phones and tablets. This has also led to an increase in data sharing that further requires efficient disk storage management. Moreover, fast and effective data sharing over the internet requires the file sizes to be as small as possible. Compression file formats offer lossy and lossless compression algorithms to compress data. These help in reducing disk storage utilization and fast data transfer over the internet.
Compression File Formats at FileFormat.com
Compression is a process of reducing the size of a data file through different encoding techniques. This results in reducing data size for efficient data transmission and storage. Compression techniques have evolved over the passage of time and different file formats have been introduced for storing and manipulating compressed file formats.
FileFormat.com is your one stop for guidance about such compression file formats. Its unique combination of file format wiki, news and support forums gives you the opportunity to get knowledge about file types and engage in fruitful discussions with file format community.