5 KB ZIP sample file

A ZIP file of exactly 5,120 bytes. It is a valid ZIP archive file, generated for this site and checked with an independent parser.

sample-zip-5kb.zip

5 KB5,120 bytes

Download 5 KB ZIP

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Type: application/zip
SHA-256: f028f46bb378873c919af3008e7de4625925c5091aa0d8fc79e142527c1987a7
Direct URL: https://sampletestfiles.com/downloads/zip/sample-zip-5kb.zip

What is in this file

4 entries: a README, a CSV file and a JSON file compressed with deflate, plus payload.bin, 1,868 pseudo-random bytes stored without compression so the archive is exactly 5,120 bytes.

Entries	4
Compression	Deflate for text entries, stored for payload.bin
Encrypted	No
ZIP64	No
Largest entry	payload.bin, 1,868 bytes

First bytes of the file

The first 64 bytes of sample-zip-5kb.zip as a hex dump: offset, bytes, then the same bytes as text. The ZIP signature is 50 4B 03 04.

00000000  50 4b 03 04 14 00 00 00 08 00 00 00 21 5c 5b d8  |PK..........!\[.|
00000010  4a 00 6a 00 00 00 79 00 00 00 0a 00 00 00 52 45  |J.j...y.......RE|
00000020  41 44 4d 45 2e 74 78 74 05 c1 31 0e c2 30 0c 05  |ADME.txt..1..0..|
00000030  d0 bd a7 f8 23 0c 64 e3 02 6c 88 05 09 26 36 b7  |....#.d..l...&6.|

Preview

ZIP files cannot be shown in a browser. Download the file and open it with Windows Explorer, macOS Archive Utility, 7-Zip.

Where 5 KB matters

A 5,120-byte file: larger than a cookie, smaller than a typical HTTP header limit. These are the default limits a file of this size is useful for testing:

System	Limit	Note
Browser cookies	4,096 bytes per cookie	5 KB does not fit in one cookie.
Vite asset inlining	4 KB by default (assetsInlineLimit)	A 5 KB asset is emitted as a separate file rather than inlined as base64.
nginx and Apache request headers	8 KB per header line by default	5 KB fits; the 10 KB sample does not.

All 5 KB sample files

Use this file for

Checking asset-inlining thresholds in bundlers
Checking limits on extracted size and entry count
Testing bulk import features

Testing notes for ZIP

Entry names may contain "../". Extracting without validating paths lets an archive write outside the target folder.
Windows reports ZIP uploads as application/x-zip-compressed, so allow-lists need both MIME types.

ZIP format reference

Technical details

File name	sample-zip-5kb.zip
Format	ZIP (ZIP archive)
Extension	.zip
MIME type	application/zip
Size	5,120 bytes (5 KB)
Kind	Binary
Signature	50 4B 03 04
SHA-256	f028f46bb378873c919af3008e7de4625925c5091aa0d8fc79e142527c1987a7
Created	2026-10-10
Validation	Exact size, signature bytes and structure checked when the file was generated
Preview	Not available for this format; details only
Source	Generated for this site; not copied from elsewhere
Licence	Free to use, modify and redistribute (terms)
Category	Archives

Validated for expected format and integrity. As with any download, scan the file with your own security tools before opening it. How files are made and checked

Download from the command line and verify

Fetch the file with curl, then compare its checksum with the SHA-256 value above.

curl -o sample-zip-5kb.zip 'https://sampletestfiles.com/downloads/zip/sample-zip-5kb.zip'
sha256sum sample-zip-5kb.zip     # Linux
shasum -a 256 sample-zip-5kb.zip # macOS

On Windows, run Get-FileHash sample-zip-5kb.zip -Algorithm SHA256 in PowerShell. A matching value proves that the download is complete and unaltered.

Related files

Questions about this file

Is this file exactly 5 KB?: Yes. It is 5,120 bytes, which is 5 KB in the binary units that operating systems and server limits use (1 KB = 1,024 bytes).
What is inside the 5 KB ZIP file?: 4 entries: a README, a CSV file and a JSON file compressed with deflate, plus payload.bin, 1,868 pseudo-random bytes stored without compression so the archive is exactly 5,120 bytes.
Are the archives encrypted?: No. They are not encrypted or password-protected and do not use ZIP64.

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