7Z
7Z archive files for upload testing
Test 7Z uploads, archive entries, LZMA compression, integrity checks, and decompression limits for backups and package distribution.
Verified . The local inspector recognizes the 7z signature; entry lists are compared before extraction, and decompression limits are checked against real 7Z inputs.
Identify 7Z files
- Magic signature
37 7A BC AF 27 1C (7z signature)- Registered MIME
application/x-7z-compressed
7Z stores compressed and solid-block data with headers that may sit at the end of the file. Readers must parse the header and folder structure rather than trusting the first bytes alone, and solid archives need the full block to extract a single entry.
Choosing 7Z
7Z is a high-compression archive format supported by 7-Zip and common archive tools, but not by every platform's built-in extractor. The local generator does not produce 7Z archives, so validate 7Z uploads with the file inspector and the ZIP archive workflows.
Inspect archive entries before extracting anything.
Enforce entry-count, size, and compression-ratio limits to block decompression bombs.
Confirm the 7z signature before treating a renamed ZIP as a 7Z archive.
Common test cases
- Archive upload validation
- Compression and integrity tests
- Decompression limit tests
Invalid and boundary cases
- Solid archive requiring full-block extraction
- Password-protected headers with no entry list
- Truncated header with intact compressed data
7Z fixture matrix
This format is generated locally in the browser and does not receive a permanent SEO URL.
Open the local generator