Compare
BZIP2 vs GZIP
BZIP2 and GZIP provide lossless compression for file streams. Actual size, speed, and extraction support depend on the data, settings, and recipient.
Which format should you choose?
Confirm the recipient's extraction tools and delivery conventions, then test both methods on representative data.
Good fit for BZIP2
Compress a file or tar archive without data loss
- Handling software distributions that use bzip2
Good fit for GZIP
Compress a file or tar archive without data loss
- Unix distributions, logs, and text files
Basic information
| Field | BZIP2 | GZIP |
|---|---|---|
| Extension | .bz2, .bz | .gz, .gzip |
| MIME type | application/x-bzip2 | application/gzip |
| Common uses | Compress a file or tar archive without data loss | Compress a file or tar archive without data loss |
| How to open | Decompress with a BZIP2-compatible tool; for tar.bz2, extract the tar archive as well. | Decompress with a GZIP-compatible tool. For tar.gz, also extract the tar archive. |
| Export or convert | When changing archive format, verify file names, directory structure, and extracted content. | When converting to ZIP or another archive, check file names, directory structure, and extracted contents. |
Choose by use case
Handling software distributions that use bzip2
Compress a file or tar archive without data loss
BZIP2Unix distributions, logs, and text files
Compress a file or tar archive without data loss
GZIPKey point 1
Both compress a stream rather than creating a multi-file archive alone.
More on the differencesKey point 2
Compression results and processing time vary with input and settings.
More on the differencesMore on the differences
Compare output size and operational time on the same input. For multiple files, check the intended tar combination and extraction path.
- BZIP2 commonly uses .bz2 and tar.bz2 workflows.
- GZIP commonly uses .gz and tar.gz workflows.
- Choose based on tool support and measured results, not a universal compression-ratio claim.
Frequently asked questions
Do .bz2 or .gz files contain several files by themselves?
Usually they compress one stream; tar commonly bundles multiple files before compression.