Online TAR File Packer – Archive & Bundle Files Securely
Bundle multiple files into a TAR archive format while preserving directory structure and file metadata. 100% browser-side processing ensures your data never leaves your device.
File List & Pack Results
Upload files to begin archiving
Supports all file types, up to 50 files
What Is TAR File Archiving?
TAR, short for Tape Archive, is a classic Unix and Linux file archiving format designed to consolidate multiple files into a single archive. Unlike ZIP, TAR is a pure archiving tool that does not compress data, making it ideal for backup and file consolidation tasks where speed and simplicity matter.
This online TAR file packer generates standard .tar files directly in your browser, preserving file names, sizes, timestamps, and directory structures. Common use cases include combining log files for long-term storage, bundling project assets for transfer, and creating uncompressed archives that can later be compressed with gzip or bzip2.
How Our Online TAR Packer Works
A TAR file consists of sequential 512-byte header blocks, each followed by the corresponding file content. The header stores metadata such as file name, permissions, size, and timestamps. Data blocks are padded to 512-byte boundaries for alignment. This design enables efficient streaming—archives can be read or written sequentially without indexing.
Our tool mimics this standard TAR creation pipeline on the client side. It reads each selected file using the File API, computes the correct octal header fields, and assembles everything into a valid TAR blob. A final 1024-byte block of zeros marks the end of the archive, ensuring full compatibility with Unix tar, 7-Zip, and WinRAR.
The entire process runs locally in your browser. No files are uploaded to a server, keeping your sensitive data safe and private at all times.
How to Use This TAR File Bundler
Step One: Upload Your Files — Drag any number of files onto the dashed area or click the "Choose Files" button. All common file types are accepted, with a maximum batch size of 50 files for optimal performance.
Step Two: Manage the File List — Review the added files in the right panel. Click the X button beside any file to remove it if you change your mind before archiving.
Step Three: Start the Archive Process — Once your file list is ready, click "Start Archiving." A real-time progress bar will show the current status and the name of the file being processed.
Step Four: Download the TAR Archive — After archiving completes, click "Download .tar" to save the bundled file. You can open it with 7-Zip, WinRAR, or native system tools on any major operating system.
If you need to begin again, simply click "Clear All" to reset the file list.
Frequently Asked Questions
How can I open a .tar file? On Windows, use 7-Zip or WinRAR. On macOS, simply double-click the file. On Linux, run tar -xvf archive.tar in the terminal to extract its contents.
Will archiving lose file metadata? No. TAR archives retain file names, sizes, and modification timestamps. However, because browsers restrict access to native file permissions, owner and group details are set to default placeholder values.
Can I archive entire folders? Due to browser security policies, direct folder uploads are not permitted. To preserve directory structures, you can compress the folder into a ZIP first, then add the ZIP to the TAR, or select individual files while recreating the hierarchy manually later.
What are the limitations of this free online TAR file tool? To maintain smooth performance, we recommend keeping the total size under 500 MB and limiting selections to 50 files per archive. Larger datasets may impact browser responsiveness.
Is my data secure? Absolutely. All archiving is performed entirely within your local browser environment using JavaScript. Your files are never transferred to an external server, making this tool ideal for handling confidential documents and private backups.
What is the difference between TAR and ZIP? TAR is purely for merging multiple files into one archive without compression, commonly used on Unix-like systems. ZIP combines both archiving and compression, and it is more frequently seen on Windows platforms. TAR archives are often further compressed with gzip (.tar.gz) for efficient distribution.