Compress to Any Archive Format
Create archives in 32+ formats including ZIP, RAR, 7Z, TAR, ISO, CAB with advanced compression options
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Supported Archive Formats
Create archives in all major compression formats
Common Archives
ZIP Archive - universal compression format with wide compatibility. Perfect for everyday file sharing, email attachments, and general compression. Supports password protection and multiple compression levels (0-9). Built into all operating systems.
RAR Archive - high-compression format with excellent ratios. Supports solid compression, recovery records, and AES encryption. Popular for large file collections and software distribution. Requires WinRAR or compatible software.
7-Zip Archive - best compression ratio available. Uses LZMA/LZMA2 algorithms with AES-256 encryption. Free and open-source. Perfect for maximizing storage efficiency and creating the smallest possible archives.
Unix/Linux Archives
TAR Archive - Tape Archive format from Unix (1979), the standard bundling format for Unix/Linux systems. TAR bundles multiple files and directories into a single file without compression, preserving critical Unix file attributes like permissions, ownership, timestamps, and symbolic links. Often combined with compression algorithms (tar.gz, tar.bz2, tar.xz) for efficient distribution. Essential for Linux software packages, system backups, and cross-platform file transfer. Works with streaming operations enabling network transfers. Foundation of Unix/Linux backup and distribution systems.
GZIP/TGZ - GNU zip compression format (1992) using DEFLATE algorithm, the standard compression for Linux and Unix systems. TGZ is a TAR archive compressed with GZIP. Fast compression and decompression with moderate ratios (typically 50-70% reduction for text). Single-file compression commonly paired with TAR for multi-file archives. Universal on Unix/Linux systems with built-in 'gzip' command. Perfect for log files, text data, Linux software distribution, and web server compression. Streaming-friendly enabling on-the-fly compression. Industry standard for Unix file compression since the 1990s.
BZIP2/TBZ2 - Block-sorting compression format by Julian Seward (1996) offering better compression than GZIP (10-15% smaller) at the cost of slower processing. TBZ2 is a TAR archive compressed with BZIP2. Uses Burrows-Wheeler transform achieving excellent ratios on text and source code. Popular for software distribution where size matters more than speed. Common in Linux package repositories and source code archives. Ideal for archival storage, software releases, and situations prioritizing compression over speed. Standard tool on most Unix/Linux systems.
XZ/TXZ - Modern compression format (2009) using LZMA2 algorithm providing excellent compression ratios approaching 7Z quality. TXZ is a TAR archive compressed with XZ. Superior to GZIP and BZIP2 with ratios similar to 7Z but as a single-file stream. Becoming the new standard for Linux distributions and software packages. Supports multi-threading for faster processing. Perfect for large archives, software distribution, and modern Linux systems. Smaller download sizes for software packages while maintaining fast decompression. Default compression for many current Linux distributions like Arch and Fedora.
TAR.7Z Archive - TAR archive compressed with 7-Zip's LZMA algorithm, combining Unix archiving with the best compression available. Merges TAR's ability to preserve Unix file attributes (permissions, ownership, symbolic links) with 7Z's exceptional compression ratios (typically 30-50% better than TAR.GZ). Less common than other TAR variants but incredibly effective for maximum space savings on Unix/Linux systems. Perfect for creating the smallest possible Linux backups, distributing large software packages where size is critical, or archiving large codebases and document collections. Requires 7-Zip tools for extraction.
TAR.BZ Archive - TAR archive compressed with BZIP compression, an alternative notation for TBZ/TBZ2 format. Uses Burrows-Wheeler transform for excellent compression on text and source code, achieving 10-20% better ratios than TAR.GZ at the cost of slower compression and decompression speeds. Popular in Linux source code distributions, software releases, and situations where bandwidth or storage is limited but CPU time is available. Common in Gentoo Linux and source-based distributions. Preserves all Unix file attributes while providing superior compression for text-heavy content.
TAR.LZ Archive - TAR archive compressed with LZIP format, using LZMA algorithm similar to XZ but with different container format. LZIP emphasizes data integrity and long-term archival with built-in error detection and recovery capabilities. Provides compression ratios similar to XZ/LZMA2 while prioritizing data safety and archival quality. Less common than other formats but valued in digital preservation communities and long-term backup scenarios. Perfect for archival purposes where data integrity over decades matters, scientific data preservation, and critical backup scenarios. Supports data recovery from damaged archives better than most formats.
TAR.LZMA Archive - TAR archive compressed with LZMA (Lempel-Ziv-Markov chain Algorithm), the predecessor to XZ format. Provides excellent compression ratios similar to modern XZ but using older container format. Largely superseded by XZ format which uses LZMA2 algorithm and offers better performance. Still encountered in older Linux distributions and legacy software packages from mid-2000s era. Compatible with most modern archive tools but XZ is now preferred for new archives. Historical format important for accessing older Linux software repositories and legacy system backups.
TAR.LZO Archive - TAR archive compressed with LZO (Lempel-Ziv-Oberhumer) algorithm, emphasizing decompression speed over compression ratio. LZO is extraordinarily fast for decompression (5-10x faster than GZIP) while providing moderate compression (similar to GZIP but slightly less). Perfect for scenarios requiring rapid extraction: live system backups, network file transfers with on-the-fly decompression, embedded systems with limited CPU power, real-time data streaming, and high-speed backup operations. Popular in system administration and backup tools. Trade-off: slightly larger files but significantly faster operations.
TAR.Z Archive - TAR archive compressed with classic Unix compress utility (LZW algorithm), one of the oldest compression formats from early Unix systems (1980s). Historically significant but now obsolete, largely replaced by GZIP which offers better compression and no patent concerns. Compress utility was once standard on Unix systems but removed due to LZW patent issues (now expired). Files are typically larger than modern alternatives. Mainly encountered in very old Unix archives, legacy system backups from 1980s-1990s, and historical software distributions. Important for accessing ancient Unix archives but should be converted to modern formats for better compatibility.
TGZ - Abbreviated form of TAR.GZ, combining TAR's file bundling with GZIP's compression in a single extension (.tgz instead of .tar.gz). Standard format for Linux software distribution and source code packages. Maintains Unix file permissions and attributes while reducing size 50-70%. Fast compression and decompression speeds make it ideal for everyday use. Universal compatibility on Unix/Linux systems with built-in tools. Perfect for software releases, backup archives, and cross-platform file transfer. Functionally identical to TAR.GZ, just using a shorter file extension that's easier to type and more convenient for DOS/Windows systems with extension length limits.
TBZ2 - Abbreviated form of TAR.BZ2, combining TAR archiving with BZIP2 compression in a shorter extension. Better compression than TGZ (10-15% smaller files) but slower processing speeds. Uses Burrows-Wheeler block sorting for excellent text compression. Common in Linux distributions and software packages where size is critical and users have time for compression. Maintains Unix file permissions and attributes. Perfect for source code distribution, archival storage, and bandwidth-limited transfers. Standard format for Gentoo Linux packages and large software archives. Trade-off between TGZ's speed and TXZ's compression ratio.
TXZ - Abbreviated form of TAR.XZ, combining TAR archiving with modern XZ (LZMA2) compression. Modern format offering the best compression ratios for TAR archives (significantly better than TGZ and TBZ2). Fast decompression despite high compression ratios. Supports multi-threading for improved performance on modern CPUs. Becoming the standard for Linux distributions with Arch Linux and Slackware prominently using TXZ packages. Maintains Unix permissions and symbolic links perfectly. Perfect for large software packages, system backups, and efficient storage. Represents the future of Unix archive compression with excellent balance of size and speed.
LZMA - Lempel-Ziv-Markov chain Algorithm compression format (2001) offering excellent compression ratios. Can be used standalone for single-file compression or combined with TAR for multi-file archives (TAR.LZMA). Predecessor to XZ format using similar algorithm but older container format. Better compression than GZIP and BZIP2 but superseded by XZ/LZMA2 which offers improved performance and features. Still encountered in older Linux distributions and legacy archives from mid-2000s. Slower compression than GZIP but better ratios approaching 7Z quality. Modern systems prefer XZ over LZMA for new archives.
LZO - Lempel-Ziv-Oberhumer compression format prioritizing speed over compression ratio. Can be used standalone for single-file compression or with TAR (TAR.LZO). Extremely fast compression and decompression (significantly faster than GZIP) with moderate ratios (30-50% reduction). Popular in real-time applications, live systems, and scenarios requiring instant decompression. Used by some Linux kernels and embedded systems. Common in backup solutions prioritizing speed over size. Perfect for temporary compression, live CD/USB systems, and high-speed data transfer. Trade-off: larger files than GZIP/BZIP2/XZ but much faster processing.
Z - Unix compress format from 1985 using LZW (Lempel-Ziv-Welch) algorithm. Can be used standalone (.Z files) or with TAR (TAR.Z). Historical Unix compression format predating GZIP. Patent issues (until 2003) led to GZIP replacing it as the standard. Legacy format with poor compression by modern standards. Rarely used today except in very old Unix systems and historical archives. If you encounter .Z or .tar.Z files, consider converting to modern formats (GZ, XZ) for better compression and wider support. Important for accessing ancient Unix archives from 1980s-1990s but obsolete for new compression tasks.
Specialized Formats
ISO Image - ISO 9660 disk image format containing exact sector-by-sector copy of optical media (CD/DVD/Blu-ray). Standard format for distributing operating systems, software installations, and bootable media. Can be mounted as virtual drive on modern operating systems without burning to physical disc. Contains complete filesystem including boot sectors, metadata, and file structures. Essential for Linux distributions (Ubuntu, Fedora ISOs), system recovery media, and software archives requiring disc-like structure. Used by virtual machines, burning software, and media servers. Universal standard with support in Windows, macOS, and Linux for mounting and burning. Perfect for preserving complete disc contents digitally or creating bootable installation media.
Cabinet Archive - Microsoft's proprietary compression format for Windows installers and system files since 1996. Used extensively in Windows setup packages, driver installations, system updates, and software distribution. Supports multiple compression algorithms (DEFLATE, LZX, Quantum), split archives for multi-disc installations, and digital signatures for security verification. Built into Windows with native extraction support (no additional software needed). Common in Windows Installer packages (.msi), older software installers, and Microsoft products. Maintains Windows-specific file attributes and can store multiple files with complete folder structures. Can span multiple files for large installations.
AR Archive - Unix archiver format from the 1970s originally for creating library archives (.a files). Simple format storing multiple files with basic metadata (filename, modification time, permissions). Used primarily for static libraries in Unix development (.a extension) and as the foundation format for DEB packages (Debian packages are AR archives containing control and data tar.gz files). Minimal compression support (none by default). Essential for Unix library management and Debian package structure. Standard 'ar' tool included on all Unix/Linux systems. Simple and reliable for static file collections, though largely superseded by TAR for general archiving needs.
Debian Package - Software package format for Debian, Ubuntu, Linux Mint, and other Debian-based Linux distributions. Contains compiled software binaries, installation scripts, configuration files, and dependency metadata for package management. Used by APT package manager (apt, apt-get, dpkg commands) to install, update, and remove software. Actually a special AR archive containing control files (installation metadata) and data archives (actual files to install). Essential format for Debian-based Linux software distribution with thousands of packages available. Includes pre/post-installation scripts, version management, dependency resolution, and conflict handling. Standard packaging for Ubuntu/Debian applications. Can be inspected and extracted as regular archive but proper installation requires dpkg.
RPM Package - Red Hat Package Manager format for Red Hat Enterprise Linux, Fedora, CentOS, SUSE, and derivative Linux distributions. Contains compiled software binaries, installation metadata, scripts, and dependency information for system-wide software management. Used by YUM and DNF package managers for installing, updating, and removing software. Includes GPG signature support for security verification and authenticity checking. Standard for Red Hat Enterprise Linux ecosystem and derivatives. Supports pre/post-installation scriptlets, file verification, rollback capabilities, and complex dependency resolution. Essential format for RHEL-based Linux software distribution with mature package management. Can be extracted as archive to inspect contents without installation, but proper installation requires rpm or yum/dnf package managers.
JAR Archive - Java Archive format based on ZIP compression, specifically designed for packaging Java applications and libraries. Contains compiled Java classes (.class files), application resources (images, sounds, config files), and manifest metadata defining the application structure. Standard distribution format for Java applications, libraries, and applets since 1996. Supports digital signatures for code verification and security. Can be executable (runnable JAR files with Main-Class manifest entry) or used as libraries. Perfect for Java application deployment, library distribution, and plugin systems. Compatible with standard ZIP tools but includes Java-specific features and conventions. Essential format for Java development and deployment across all platforms.
ARJ Archive - Legacy DOS compression format developed by Robert Jung in 1991, extremely popular in the DOS and early Windows era. Offered good compression ratios and ability to create multi-volume archives, password protection, and damage protection features. Largely obsolete today, replaced by modern formats like ZIP, RAR, and 7Z which offer better compression and wider support. Still occasionally encountered in legacy systems, old software archives, and retro computing. Requires ARJ or compatible decompression software (not built into modern systems). Historical format important for accessing old DOS/Windows archives from the 1990s. Better converted to modern formats for long-term accessibility and compatibility.
LHA/LZH Archive - Japanese compression format (also known as LZH) developed by Haruyasu Yoshizaki in 1988, extremely popular in Japan and with Amiga computer users during the 1990s. Uses LZSS and LZHUF compression algorithms providing good compression ratios for the era. Common for Japanese software distribution, Amiga software archives, and retro computing communities. Supports archive headers, directory structures, and file attributes. Legacy format now mostly replaced by modern alternatives like ZIP and 7Z. Still encountered in retro computing, Japanese software archives from the 1990s, and Amiga communities. Requires LHA/LZH compatible software for extraction. Important for accessing Japanese software archives and Amiga software preservation.
CPIO Archive - Copy In/Out archive format from Unix (1970s) designed for creating file archives with streaming capabilities. Simpler format than TAR, often used for system backups, initial RAM disk (initramfs/initrd) creation in Linux boot processes, and system-level archiving. Standard format for Linux initial RAM disk images loaded during boot. Supports multiple format variants (binary, ASCII, CRC) for different use cases. Better handling of special files, device nodes, and deep directory hierarchies than TAR. Common in system administration, bootloader configurations, kernel initrd images, and RPM package internals. Universal on Unix/Linux systems with built-in 'cpio' command. Essential for system-level archiving and embedded Linux systems.
Professional Archive Compression Tool
Create archives in 32+ formats including ZIP, RAR, 7Z, TAR, ISO, and specialized formats. Our compressor offers customizable compression levels, methods, and encryption options. Perfect for file backup, distribution, and cross-platform compatibility.
Archive Compressor FAQ
What archive formats are supported?
We support 32 archive formats organized into four categories: Common Archives (ZIP, RAR, 7Z), Unix/Linux Archives (TAR and variants like tar.gz, tar.bz2, tar.xz, tar.7z, tar.lz, tar.lzma, tar.lzo, tar.z, plus TGZ, TBZ2, TXZ), Standalone Compression (gz, bz2, xz, lzma, lzo, z), and Specialized Formats (ISO, CAB, ARJ, CPIO, JAR, LHA/LZH, DEB, RPM, AR).
Each format has specific strengths: ZIP for universal compatibility, RAR for better compression with recovery features, 7Z for maximum compression ratios, TAR variants for Unix/Linux systems, ISO for disc images, and specialized formats for specific use cases like software packaging (DEB, RPM) or legacy support (ARJ, LHA).
You can customize compression for most formats with options like compression level (0-9), compression method (DEFLATE, LZMA, LZMA2, BZip2), password protection, encryption strength, solid compression, and recovery records. Choose the format that best matches your needs for compatibility, compression ratio, speed, or special features.
Can I password protect my archives?
Yes! Password protection is available for ZIP, 7Z, RAR, and ARJ formats. 7Z offers the strongest encryption with AES-256, while ZIP supports both AES and ZipCrypto encryption methods. RAR provides strong AES encryption with optional recovery records, and ARJ offers password protection for legacy compatibility.
To enable password protection: select a format that supports encryption (ZIP, 7Z, RAR, or ARJ), enable the password option in compression settings, enter your desired password (use strong passwords with mixed characters), and optionally select encryption method (AES-256 recommended for 7Z). Your files will be encrypted and require the password to extract.
Security features: All passwords are used only during compression and never stored. Files are processed securely with automatic deletion after download. For maximum security, use 7Z with AES-256 encryption and a strong password (12+ characters with uppercase, lowercase, numbers, and symbols). Never share passwords through the same channel as the archive.
What compression levels are available?
Compression levels range from 0 to 9: Level 0 (Store) - no compression, fastest, same size as original. Level 1 (Fast) - light compression, very quick. Level 5 (Normal) - balanced compression and speed, recommended for most uses. Level 7 (Maximum) - high compression, slower processing. Level 9 (Ultra) - maximum compression, slowest but smallest files.
We also offer Quality Presets for easier selection: Store Preset (level 0) - instant archiving without compression, Fast Preset (level 1) - quick compression for time-sensitive tasks, Normal Preset (level 5) - balanced default for general use, Maximum Preset (level 7) - better compression for storage optimization, Ultra Preset (level 9) - best compression for archival and distribution.
Choosing the right level: Use Store/Fast (0-1) for already-compressed files (videos, images) or when speed matters most. Use Normal (5) for everyday archiving with good balance. Use Maximum/Ultra (7-9) when file size is critical, storage space is limited, or for long-term archival. Higher levels significantly increase compression time but can reduce file size by 20-40% compared to lower levels.
What is the difference between ZIP, RAR, and 7Z?
ZIP is the most universally compatible format, built into Windows, macOS, and Linux. It offers good compression (40-60% reduction), fast processing, and works everywhere without additional software. Best for: file sharing, email attachments, web downloads, and ensuring everyone can open your archives. Supports password protection and compression levels 0-9.
RAR provides superior compression ratios (10-20% better than ZIP) with advanced features like recovery records (repair damaged archives), solid compression (better ratios for similar files), and strong AES encryption. Popular on Windows with WinRAR software. Best for: long-term storage, large file collections, backup scenarios, and when you need recovery capabilities. Requires WinRAR or compatible software.
7Z offers the best compression ratios available (20-40% better than ZIP, 10-15% better than RAR) using LZMA/LZMA2 algorithms. Open-source and free from licensing restrictions. Supports AES-256 encryption, huge file sizes (16 exabytes), and multiple compression methods. Best for: maximizing storage efficiency, software distribution, backup archives where size matters most. Requires 7-Zip or compatible software but offers exceptional space savings.
Can I compress multiple files at once?
Yes! You can compress multiple files and folders into a single archive. Simply drag and drop all files together, or click the upload button to select multiple files. All files will be compressed into one archive with preserved directory structure. You can add files from different folders, and they'll maintain their relative paths within the archive.
Benefits of multi-file compression: Single archive is easier to share and manage than multiple files. Preserved folder structure maintains organization. Better compression ratios when files share similar data (especially with solid compression). Convenient for backup, distribution, or email attachments. Single password protects all files when encryption is enabled.
Best practices: Organize files into logical groups before compressing. Use descriptive archive names. Consider file size limits (10MB per file, 100MB total recommended). For very large collections, create multiple archives by category. Use solid compression (7Z, RAR) for better ratios with many small files. Add a README file explaining archive contents.
What is solid compression?
Solid compression treats all files in the archive as one continuous data stream instead of compressing each file individually. This achieves significantly better compression ratios, especially for archives containing many small files with similar content (like source code, text documents, or small images). Available in 7Z and RAR formats.
Advantages: 10-30% better compression than standard mode for similar files. Excellent for source code archives (many small text files). Perfect for document collections with similar formatting. Ideal for software distributions with shared libraries. Best compression ratios for backup archives with incremental files. Can save significant storage space for large collections.
Trade-offs: Extracting a single file requires reading the entire archive up to that file's position (slower individual file extraction). Cannot update archives efficiently (adding/removing files requires recreating the archive). Best used for archives you'll extract completely or rarely modify. Not recommended for archives where you frequently need individual files. Standard compression better for archives requiring random access.
Are my files secure?
Yes! Your file security is our priority. All compression is performed on secure servers with encrypted storage. Files are automatically deleted within 1 hour after processing - we never store your files permanently. All transfers use HTTPS encryption for complete privacy. We don't access, analyze, or share your file contents with anyone.
Security measures: Server-side processing on secure infrastructure. Automatic file deletion after compression. Encrypted transfer (HTTPS) for all uploads and downloads. No permanent storage or retention. No third-party access to your files. No tracking or logging of file contents. Temporary processing only during conversion. Complete isolation from other users.
Additional security options: Use password protection for sensitive files (ZIP, 7Z, RAR support encryption). Enable AES-256 encryption in 7Z for maximum security. Use strong passwords (12+ characters, mixed types). For highly confidential data, consider offline compression tools. Our service is suitable for general business and personal use. Check your organization's policies for classified or legally sensitive data.
What are TAR variants (tar.gz, tar.bz2, tar.xz)?
TAR (Tape Archive) is a Unix format that bundles multiple files without compression. TAR variants combine this bundling with different compression algorithms: TAR.GZ (or TGZ) uses GZIP - fast compression with moderate ratios, standard for Linux. TAR.BZ2 (or TBZ2) uses BZIP2 - better compression than GZIP but slower. TAR.XZ (or TXZ) uses LZMA2 - modern algorithm with excellent compression approaching 7Z quality.
Additional variants: TAR.7Z combines TAR with 7-Zip compression for maximum space savings. TAR.LZ uses LZIP emphasizing data integrity and long-term archival. TAR.LZMA uses legacy LZMA compression (predecessor to XZ). TAR.LZO prioritizes extremely fast decompression over compression ratio. TAR.Z uses classic Unix compress (historical, obsolete).
Choosing the right TAR variant: Use TAR.GZ (TGZ) for general Linux software distribution (fast, universally compatible). Use TAR.BZ2 (TBZ2) for better compression on source code archives. Use TAR.XZ (TXZ) for modern Linux distributions (best compression-to-speed ratio). Use TAR.7Z for maximum compression when size is critical. Use plain TAR when you need streaming or will add compression later. TAR variants preserve Unix file permissions, ownership, and symbolic links essential for Linux systems.
Can I create ISO images?
Yes! ISO format creates disc images containing complete filesystems, exactly like CD/DVD/Blu-ray discs. Our compressor can create ISO images from your files, preserving directory structure and file attributes. ISO files can be mounted as virtual drives on modern operating systems or burned to physical optical media.
ISO use cases: Linux distribution images for bootable USB/CD installation. Software installations that require disc-like structure. Archiving CD/DVD collections digitally (preserve complete disc contents). Creating bootable recovery media for system repair. Distributing software with boot sectors and special filesystem requirements. Virtual machine disc images. Media server content (mountable without physical discs).
Working with ISO files: Modern Windows, macOS, and Linux can mount ISO files directly as virtual drives (no burning required). Use mounting tools to access contents without extraction. Burn to physical media with disc burning software if needed. ISO files preserve boot sectors and filesystem metadata. Useful for maintaining exact disc structure. Note: ISO files are typically uncompressed, so converting to compressed formats (ZIP, 7Z) often significantly reduces file size if you don't need the disc image features.
What is the maximum file size?
The maximum file size per upload is 10MB in the free version, suitable for most documents, source code, and small media files. This limit applies to individual input files, not the total archive size. For batch compression, you can compress multiple files up to 10MB each. The resulting archive size depends on compression ratio and format.
Archive format limits (theoretical): ZIP without ZIP64 extension - 4GB maximum. ZIP with ZIP64 - 16 exabytes maximum. RAR - 8 exabytes maximum. 7Z - 16 exabytes maximum. TAR and variants - typically 8GB (depends on format). ISO - 8TB maximum. For practical purposes, these limits far exceed typical use cases.
Handling larger files: For files exceeding 10MB, consider splitting into smaller archives, removing unnecessary files before archiving, compressing media files separately (use format-specific compression), or upgrading to premium for higher limits. For very large collections: create multiple archives by category, use incremental backups (only changed files), verify content necessity (do you need everything archived?). Well-organized smaller archives compress faster, transfer easier, and are more manageable.
What compression methods are available?
Different archive formats support different compression methods: ZIP supports DEFLATE (standard, fast and compatible), BZip2 (better compression, slower). 7Z supports LZMA (excellent compression), LZMA2 (improved LZMA with better multithreading), BZip2 (alternative compression). RAR supports Normal (balanced), Best (maximum compression), Fast (quick compression), Store (no compression).
Method characteristics: DEFLATE - Fast compression and decompression, moderate ratios (50-60% reduction), universal compatibility, best for everyday use. LZMA/LZMA2 - Best compression ratios (60-80% reduction possible), slower compression but fast decompression, perfect for distribution and archival. BZip2 - Better than DEFLATE (10-15% smaller), good for text and source code, balanced speed. Store - No compression, instant archiving, useful for already-compressed files.
Choosing compression methods: Use DEFLATE for general-purpose ZIP archives (fast, compatible). Use LZMA2 for 7Z when maximum compression is needed (best ratios). Use BZip2 for text-heavy archives in ZIP or 7Z (source code, documents). Use Store for already-compressed content (videos, images, PDFs) where recompression wastes time. The compression method works with compression level (0-9) to balance speed versus size for your specific needs.
Can I add recovery records?
Yes, for RAR format! Recovery records add redundancy data to archives, allowing repair of damaged files up to the percentage you specify (typically 1-10%). If part of your RAR archive becomes corrupted (bad sectors, transmission errors, storage degradation), the recovery data can reconstruct the damaged portions and recover your files.
Recovery record benefits: Repair damaged archives from storage media failures (aging hard drives, corrupted SD cards). Recover from incomplete downloads or network transmission errors. Protection against bit rot in long-term archival. Useful for unreliable storage media or network transfers. Insurance for critical backups. Can save files that would otherwise be completely lost.
Trade-offs and usage: Recovery records increase archive size (5% recovery = 5% larger file, 10% = 10% larger). Larger recovery percentages can fix more damage but create bigger files. Recommended for: critical backups, long-term archival storage, unreliable media, important data you can't afford to lose. Not necessary for: temporary compression, already-backed-up data, files that can be easily recreated. Add recovery records during RAR creation for peace of mind on valuable archives.
What are DEB and RPM formats?
DEB is the software package format for Debian, Ubuntu, Linux Mint, and other Debian-based Linux distributions. RPM (Red Hat Package Manager) is used by Red Hat, Fedora, CentOS, SUSE, and derivative distributions. Both are actually specialized archive formats containing compiled software, installation scripts, configuration files, and dependency metadata.
Package contents: Compiled binary executables and libraries. Installation and uninstallation scripts (pre/post install hooks). Configuration files and default settings. Dependency information (required packages). Version and maintainer metadata. Documentation and man pages. Digital signatures for security verification. These packages are managed by system package managers (APT for DEB, YUM/DNF for RPM).
Important note: While our compressor can create DEB and RPM files as archives, proper software packages require specific internal structure, metadata files (control, spec), and correct permissions that package managers expect. Our tool is useful for: extracting package contents for inspection, accessing files without installing, understanding package structure, converting to other archive formats. For actual software distribution, use proper package building tools (dpkg-deb, rpmbuild) that create packages with correct metadata for installation.
Should I use compression or archiving?
Use pure archiving (TAR without compression) when: preserving exact file attributes is critical (Unix permissions, ownership, timestamps), you'll add compression later with your preferred algorithm, you need streaming operations (network transfer, piping), you want to append files without reprocessing the entire archive, or you're working with already-compressed content where recompression provides no benefit.
Use compression (ZIP, 7Z, RAR, or TAR with compression) when: reducing file size is the priority (storage space limited, bandwidth concerns), distributing files over the internet (faster downloads), creating email attachments (size limits), backing up to limited storage (maximize capacity), or archiving for long-term storage (space efficiency matters).
Best of both worlds - compressed TAR variants: TAR.GZ (TGZ) combines TAR archiving with GZIP compression - preserves Unix attributes while reducing size 50-70%. TAR.BZ2 (TBZ2) offers better compression for text-heavy content. TAR.XZ (TXZ) provides excellent compression with modern LZMA2 algorithm. TAR.7Z achieves maximum compression when size is critical. This approach is standard in Unix/Linux systems: TAR handles archiving (bundling, attributes), compression handles size reduction. Choose based on whether you prioritize attributes/streaming (pure TAR) or size/distribution (compressed archives).
What is the difference between GZIP, BZIP2, and XZ?
GZIP (gz, tar.gz, tgz) is the fastest compression algorithm using DEFLATE method. Advantages: Very fast compression and decompression (great for time-sensitive tasks). Moderate compression ratios (typically 50-70% reduction on text). Universal on Unix/Linux systems (built-in command). Streaming-friendly (can compress on-the-fly). Industry standard since 1992. Best for: quick compression, log files, temporary archives, web server compression, when speed matters most.
BZIP2 (bz2, tar.bz2, tbz2) uses Burrows-Wheeler block sorting algorithm. Advantages: Better compression than GZIP (10-15% smaller files). Excellent for text and source code (achieves great ratios on repetitive data). Slower compression and decompression than GZIP (more CPU intensive). Good balance of size and compatibility. Best for: source code archives, text-heavy content, software distribution where size matters, archival storage when moderate compression time is acceptable.
XZ (xz, tar.xz, txz) uses modern LZMA2 algorithm developed in 2009. Advantages: Excellent compression ratios (comparable to 7Z, 20-30% better than GZIP). Fast decompression despite high compression. Multi-threading support (faster on modern CPUs). Becoming the new standard for Linux distributions. Best compression-to-speed ratio. Best for: large archives, software distribution (Linux packages), modern Linux systems, when maximum compression with reasonable speed is needed. Comparison summary: Use GZIP for speed, BZIP2 for balanced compression, XZ for maximum compression on modern systems. All three preserve data perfectly (lossless compression).