Open, view, decompress, and extract BZIP2 (.bz2) files directly in your browser - completely free, no software needed. Works for compressed log files, database dumps, source archives, and any single-file .bz2. Have a multi-file .tar.bz2 tarball? This opener auto-detects it and hands off to the Archive Viewer in one click. Working with other formats? Check out our GZ Opener, XZ Opener, 7Z Viewer, or browse all file viewers.
or click to browse - works for .bz2, .bz, .tbz2, and .log.bz2 files
Drag and drop your .bz2 file onto the upload area, or click to browse. Works for any BZIP2-compressed file - logs, text, database dumps, source archives, or scientific datasets. Up to 500 MB.
The file is automatically decompressed in your browser using a pure-JavaScript BZIP2 decoder. Text and log files appear inline with line numbers, search, and match navigation. Binary files show a hex preview plus the file metadata.
Use the search bar to find specific entries inside text content - jump through matches with the up/down arrows. Click Download Decompressed to save the original file, or Copy for text. If the file is a .tar.bz2, a one-click Open in Archive Viewer button appears so you can browse all the files inside.
Files are decompressed locally using a pure-JavaScript BZIP2 decoder. No server round-trip, no upload wait.
Perfect for compressed rotated server logs (.log.bz2). View inline with line numbers and live search.
Find text inside the decompressed content. Jump between matches with prev/next, see exact match counts.
Detects when a .bz2 is really a .tar.bz2 and offers a one-click handoff to the Archive Viewer.
Detects images (PNG, JPG, WebP, etc.) and renders them inline. Shows hex preview for any other binary content.
All processing happens in your browser. Files never leave your device - safe for sensitive logs and confidential dumps.
BZIP2 was created by Julian Seward and first released in 1996 as a higher-compression alternative to GZIP. Instead of GZIP's DEFLATE algorithm, BZIP2 uses the Burrows-Wheeler transform followed by move-to-front coding and Huffman coding. The result is typically 10-15% smaller than an equivalent .gz file, at the cost of being four to five times slower to compress. A reliable .bz2 file opener is essential for anyone working with archived logs, scientific datasets, or legacy Linux releases.
Like GZIP, BZIP2 is a single-file compressor - it does not bundle multiple files on its own. That is why it is most often paired with TAR as .tar.bz2 (sometimes shortened to .tbz2). This opener auto-detects that case and offers a handoff to the Archive Viewer so you can browse the contents without a separate decompress-then-untar step.
The three single-file compressors trade speed for ratio. GZIP (.gz) is fastest but compresses least. BZIP2 sits in the middle - tighter than GZIP, slower than both. XZ (.xz) compresses the smallest but is the slowest to compress (though fast to decompress), which is why most modern Linux source releases moved from .tar.bz2 to .tar.xz. You will still encounter plenty of .bz2 files in genomics pipelines, scientific data, and older software archives.
To bundle multiple files into a compressed archive, use our Archive Creator which produces ZIP, TAR, and TAR.GZ output. To browse a .tar.bz2 tarball directly, open it in the TAR Viewer or the Archive Viewer.
Upload your .bz2 file by dragging it onto the upload area or clicking to browse. The file is decompressed automatically in your browser - no software, no signup, no upload to any server. Text contents appear inline so you can read and search them; binary files can be extracted with one click using the Download Decompressed button.
Upload your .bz2 file here and click Download Decompressed to extract it to your device. The .bz2 format compresses a single file, so extraction produces one output file. No 7-Zip, WinRAR, or bunzip2 command line needed - it works on Windows, Mac, Chromebooks, and mobile. For multi-file .tar.bz2 archives, use our TAR Viewer or Archive Viewer.
A .bz2 file is a single file compressed with BZIP2, a compression algorithm released in 1996 that uses the Burrows-Wheeler transform. It typically produces files 10-15% smaller than GZIP at the cost of slower processing. Unlike ZIP or RAR which package multiple files into one archive, BZIP2 compresses one file at a time, so it is usually paired with TAR as .tar.bz2 for multi-file archives.
A .bz2 file is a single compressed file. A .tar.bz2 file (also called .tbz2) is a TAR archive containing multiple files that has then been compressed with BZIP2. This opener auto-detects when a .bz2 contains a TAR archive and shows a one-click Open in Archive Viewer button so you can browse all the files inside. You can also open it directly in the TAR Viewer.
GZIP (.gz) is the fastest but compresses least. BZIP2 (.bz2) compresses about 10-15% smaller than GZIP but is several times slower. XZ (.xz) compresses the smallest of the three but is the slowest to compress (though fast to decompress). BZIP2 was once the Linux standard but has largely been replaced by XZ for new releases - you will still encounter plenty of .bz2 files in the wild.
Yes - .bz2 is commonly used to compress rotated server logs because of its strong compression ratio. This opener decompresses and displays these text-based log files inline, lets you search through the content with match navigation, and extracts them to your device. Ideal for inspecting archived Apache, Nginx, or syslog exports without downloading uncompressed versions.
Less than it used to be. XZ has largely replaced BZIP2 for new Linux source releases because XZ decompresses faster and compresses tighter. However, BZIP2 remains common in older archives, scientific datasets, genomics pipelines, and legacy backup systems, so you will still run into .bz2 files regularly.
Yes - all decompression happens locally in your browser using a pure-JavaScript BZIP2 decoder. Your files are never uploaded to our servers, which makes this safe for sensitive log files, database exports, and confidential documents. Still having trouble? Please contact us and we'll be happy to help!