High compression
Advanced algorithms like LZMA and LZMA2 deliver some of the best compression ratios available.
About 7-Zip Format
7z is an open archive format developed by Igor Pavlov offering high compression ratios and modern features. Paquet Builder uses 7-Zip technology for all its compression and self-extracting operations.
Key Features
Section titled “Key Features”AES-256 encryption
Strong encryption for secure data protection — both file content and filenames can be encrypted.
Large file support
Files up to 16 exbibytes (2^64 bytes).
Solid compression
Treats multiple files as a single data block for better compression ratios.
Compression Methods
Section titled “Compression Methods”| Method | Description |
|---|---|
| LZMA | Enhanced LZ77 algorithm — default method, high compression ratio |
| LZMA2 | Improved LZMA with better multithreading support |
| PPMD | PPMdH algorithm — excellent for text-heavy content |
| BCJ | Converter for 32-bit x86 executables |
| BCJ2 | Advanced converter for 32-bit x86 executables |
| BZip2 | Burrows-Wheeler Transform algorithm |
| Deflate | Standard LZ77 + Huffman coding |
Filters
Section titled “Filters”| Filter | Description |
|---|---|
| ARM | Converter for 32-bit ARM executables |
| ARM64 | Converter for ARM64 executables |
| PPC | Converter for PowerPC executables |
| SPARC | Converter for SPARC executables |
| IA64 | Converter for Itanium executables |
| Delta | Converter for multimedia data (e.g. WAV files) |
LZMA Characteristics
Section titled “LZMA Characteristics”Variable dictionary
Dictionary sizes up to 4 GB for maximum compression.
Fast decompression
10–20 MB/s on a 2 GHz CPU, with low memory requirements.
Small decoder
Decompression code is only ~5 KB — ideal for embedded applications.
Multithreading
Full support for multithreaded and hyper-threaded CPUs.
Technical Notes
Section titled “Technical Notes”The 7-Zip compression system in Paquet Builder is based on 7-Zip and LZMA SDK 26.0.
Developers interested in the LZMA algorithm can access the LZMA SDK with C++ source code for both encoder and decoder.
Related Pages
Section titled “Related Pages” Compression Options Configure compression level and 7-Zip parameters.
File Extraction Settings Choose the decompression engine for your packages.
Multi-Volume Archive Split large archives into smaller volumes.