TAR.GZ (also written as .tgz) is a TAR archive compressed with GZIP — the standard format for distributing source code, Linux software packages, server backups, and developer tools. It combines two Unix utilities: tar for bundling multiple files into one archive while preserving directory structure and permissions, and gzip for compressing the resulting bundle into a significantly smaller file.
You will encounter TAR.GZ files whenever you download software from GitHub, transfer files from macOS or Linux systems, restore server backups, or work with development tools. AnExplorer opens .tar.gz and .tgz files natively — browse inside the archive or extract everything to a folder in one step.
Quick Answer
Open AnExplorer → tap the .tar.gz file → browse contents or long-press → Extract to decompress everything to a folder. AnExplorer handles both the GZIP decompression and TAR extraction automatically.
What Is a TAR.GZ File?
TAR.GZ is two operations combined into one file:
- TAR (Tape Archive) — bundles files and directories into a single archive. No compression, just packaging. Preserves file names, directory hierarchy, Unix permissions, timestamps, and symlinks.
- GZIP (GNU Zip) — compresses the entire TAR file using the Deflate algorithm. Reduces the archive size by typically 30-70% depending on content.
This two-layer approach is the standard in Unix/Linux systems because it separates concerns:
- TAR handles the structural complexity (directories, metadata, special files)
- GZIP handles pure data compression
Unlike ZIP which compresses each file independently, GZIP compresses the entire TAR stream as one unit. This often yields better compression ratios because the algorithm can find patterns across file boundaries — especially effective for collections of similar files like source code.
Extension Variations
All of these are the same format:
.tar.gz— the canonical double extension.tgz— shortened form (common on systems with extension length limits).tar.gzip— rare but valid
AnExplorer recognizes and handles all variations identically.
Where You Encounter TAR.GZ Files
TAR.GZ is the dominant archive format in the Linux, Unix, and developer ecosystem:
| Source | What You Get |
|---|---|
| GitHub repository download | repository-main.tar.gz — complete source code |
| Linux software distribution | Source tarballs for compilation |
| npm/pip package sources | Node.js and Python package tarballs |
| Server backups | cPanel, Plesk, DigitalOcean snapshots |
| macOS Terminal exports | Files bundled with tar -czf command |
| Docker image layers | Container filesystem layers |
| Homebrew formulas | macOS package source archives |
| Android NDK/SDK tools | Native development toolchains |
| Database dumps | PostgreSQL, MySQL export archives |
| Website migrations | Full site file exports from hosting panels |
How to Open TAR.GZ Files with AnExplorer
Browse Without Extracting
- Launch AnExplorer
- Navigate to the
.tar.gzor.tgzfile - Tap the file — AnExplorer decompresses and shows the archive structure
- Browse directories and files inside
- Tap individual files to preview (text, images, documents)
Extract Everything
- Navigate to the
.tar.gzfile in AnExplorer - Long-press the file to select it
- Tap menu (⋮) → Extract
- Choose a destination folder
- Tap OK — AnExplorer decompresses (GZIP) and extracts (TAR) in one step
- Files appear in the chosen folder with their original directory structure
Extract Specific Files
- Tap the
.tar.gzfile to browse inside - Navigate to the files or folders you need
- Long-press to select specific items
- Tap Extract → choose destination
- Only selected items are extracted
Technical Details
How GZIP Compression Works
GZIP uses the Deflate algorithm (the same one used inside ZIP files) but applies it to the entire data stream rather than individual files:
- LZ77 — finds repeated byte sequences and replaces them with back-references
- Huffman coding — encodes the output using variable-length codes (shorter codes for common patterns)
The result is typically 30-70% size reduction for text-based content (source code, config files, HTML) and modest reduction for already-compressed content (JPEG images, MP4 video).
Compression Levels
GZIP supports compression levels 1-9:
- Level 1 (fast) — minimal compression, maximum speed
- Level 6 (default) — balanced compression and speed
- Level 9 (best) — maximum compression, slowest
Most TAR.GZ files you download use level 6 or 9. The level affects compression time but barely affects decompression speed — extracting is always fast regardless of what level was used to create the file.
TAR.GZ vs Other Compressed TAR Formats
| Format | Extension | Compression | Ratio | Decompress Speed | Create Speed |
|---|---|---|---|---|---|
| TAR.GZ | .tar.gz / .tgz | GZIP (Deflate) | Good (30-60%) | Fast | Fast |
| TAR.BZ2 | .tar.bz2 / .tbz2 | BZIP2 (BWT) | Better (35-65%) | Moderate | Slow |
| TAR.XZ | .tar.xz / .txz | XZ (LZMA2) | Best (40-70%) | Slow | Very slow |
| TAR.ZSTD | .tar.zst | Zstandard | Good (35-60%) | Very fast | Fast |
| TAR.LZ4 | .tar.lz4 | LZ4 | Moderate (20-40%) | Extremely fast | Extremely fast |
TAR.GZ dominates because it offers the best balance of compression ratio, decompression speed, and universal availability. Every Unix system includes gzip by default.
AnExplorer supports TAR.GZ, TAR.BZ2, and TAR.XZ variants.
File Size Examples
Typical compression ratios for common content:
| Content Type | Original Size | TAR.GZ Size | Ratio |
|---|---|---|---|
| Source code (C/Java) | 100 MB | 20-30 MB | 70-80% reduction |
| Plain text documents | 100 MB | 15-25 MB | 75-85% reduction |
| Already-compressed (JPEG/MP4) | 100 MB | 95-100 MB | ~0% reduction |
| Database SQL dump | 100 MB | 10-20 MB | 80-90% reduction |
| Mixed web assets (HTML/CSS/JS/images) | 100 MB | 40-60 MB | 40-60% reduction |
TAR.GZ vs ZIP
| Aspect | TAR.GZ | ZIP |
|---|---|---|
| Compression approach | Stream (whole-file) | Per-file |
| Compression ratio | Better for similar files | Good, but per-file overhead |
| Random file access | ❌ Must decompress from start | ✅ Direct access to any file |
| Unix permissions | ✅ Fully preserved | ❌ Not preserved |
| Symlinks | ✅ Preserved | ❌ Not supported |
| File size overhead | Minimal | Central directory + per-file headers |
| Default on Linux/Mac | ✅ | ❌ |
| Default on Windows | ❌ | ✅ |
| Password protection | ❌ (use GPG separately) | ✅ Built-in AES |
TAR.GZ is preferred when preserving Unix metadata matters or when compressing large collections of similar text files. ZIP is preferred for cross-platform sharing where recipients may be on Windows.
Common Use Cases on Android
Downloading Source Code from GitHub
Every GitHub repository offers a TAR.GZ download:
- On GitHub, go to the repository → Code → Download TAR.GZ
- Or use a release page → download the source tarball
- Open in AnExplorer to browse source files, read documentation, or extract configs
Restoring Server Backups
Server hosting panels (cPanel, Plesk) create backups as TAR.GZ:
- Download the backup to your phone
- Open in AnExplorer to find specific files (database dumps, config files)
- Extract only what you need rather than the entire multi-GB backup
Working with Developer Tools
Android NDK, Flutter SDK, and other tools sometimes ship as TAR.GZ:
- Download the TAR.GZ to your device
- Extract to a known location
- Reference the extracted tools from your development environment
Transferring Files from Mac/Linux
When someone bundles files on macOS or Linux using Terminal:
- They run
tar -czf files.tar.gz folder/ - Send you the resulting file
- Open in AnExplorer to browse and extract the contents
Troubleshooting
"Cannot open as archive" for a .tar.gz file
- The file may have a wrong extension — some
.tar.gzfiles are incorrectly named.taror.gzonly - Try long-press → Open as archive to force archive interpretation
- If it is truly a
.gz(single compressed file, not a TAR bundle), AnExplorer decompresses it to a single file
Extraction produces only one large .tar file
This means only the GZIP layer was decompressed without unpacking the TAR:
- Open the resulting
.tarfile in AnExplorer - Extract again — this unpacks the TAR layer
- In most cases, AnExplorer handles both layers in one step automatically
Extraction is very slow
- TAR.GZ decompression is generally fast (GZIP is designed for speed)
- Very large archives (5+ GB) take time proportional to their uncompressed size
- Ensure your device has sufficient free storage — the extracted content is larger than the compressed file
- BZIP2 and XZ compressed TARs are significantly slower than GZIP
"Insufficient storage" during extraction
- Compressed TAR archives expand 2-5x when extracted (depending on content)
- A 500 MB
.tar.gzmight produce 2-3 GB of extracted files - Free space before extraction or extract to an SD card with more room
- Use Memory Cleaner to identify and remove unnecessary files
File permissions issues after extraction
- Unix permissions stored in TAR files do not apply on Android's filesystem
- Extracted files get standard Android read/write permissions
- This is normal and expected — Android does not use Unix permission enforcement
Related Guides
- Open TAR Files — uncompressed TAR archives
- Open ZIP Files — ZIP archive extraction
- Open 7Z Files — high-compression 7-Zip format
- Open RAR Files — RAR archive guide
- Archive Manager
