.73c — 7-Zip Compressed File
Igor Pavlov · 1999
A .73c file is an archive created by the 7-Zip compression utility, known for its high compression ratios.
Key Features
- High compression ratios, especially with LZMA/LZMA2.
- Support for large file sizes.
- Strong AES-256 encryption for security.
- Open-source and widely available.
Best For
- Achieving the smallest possible file size for archives.
- Securely storing sensitive data through strong encryption.
- Bundling numerous files or folders into a single, manageable unit.
- Users who prioritize open-source and efficient compression.
Less Ideal For
- Quickly sharing individual files where compression isn't critical.
- Formats that require universal compatibility without extra software.
- Applications that have native support for simpler formats like .zip.
- Situations where editability of contents directly within the archive is needed.
Common Use Cases
- Compressing large collections of files for backup.
- Reducing the size of software installers.
- Bundling multiple documents or media files for easier sharing.
- Archiving data to save storage space.
How to Open It
- Download and install the 7-Zip application from its official website.
- Right-click on the .73c file and select '7-Zip' > 'Extract Here' or 'Extract Files...'.
- Alternatively, double-click the file to open it within the 7-Zip File Manager and select files to extract.
What is a .73c file?
The .73c file extension is commonly associated with 7-Zip, a popular open-source file archiver. It represents a compressed archive, similar to .zip or .rar files, designed for efficient data compression and storage. These archives can contain one or many files and folders, reducing their total size for easier transfer or storage. 7-Zip supports various compression algorithms, with LZMA/LZMA2 being its default and most powerful option, offering superior compression ratios compared to many other formats.
Programs That Open .73c Files
| Platform | Program | ||
|---|---|---|---|
| Windows | 7-Zip | Free | Official |
| macOS | Keka | Paid | |
| The Unarchiver | Free | ||
| Linux | 7-Zip | Free | Official |
| p7zip | Free | ||
| Android | 7Zipper | Free | |
| iOS | iZip | Free |
How to Convert .73c Files
| Format | Method |
|---|---|
| .ZIP | 7-Zip, WinRAR, Online Converters |
| .RAR | 7-Zip, WinRAR, Online Converters |
| .TAR | 7-Zip, p7zip, Online Converters |
Common Problems with .73c Files
Frequently Asked Questions
The .73c extension is often used interchangeably with .7z for files compressed by 7-Zip, especially older versions or specific configurations. For most practical purposes, they represent the same 7z archive format.
Generally, yes, for compression. The 7z format (often with .73c or .7z extension) typically achieves higher compression ratios than the standard .zip format, meaning smaller file sizes, especially for text-based or repetitive data.
Yes, while 7-Zip is primarily for Windows, compatible software like Keka or The Unarchiver on macOS, and p7zip on Linux, can open and extract .73c archives.
Technical Details
The .73c extension is part of the 7z archive format, which employs a modular, filter-based structure. It primarily uses the LZMA and LZMA2 compression algorithms, offering excellent lossless compression. The format supports features like solid archiving, AES-256 encryption, and multi-volume archives.