10 KB ZIP sample file
A ZIP file of exactly 10,240 bytes. It is a valid ZIP archive file, generated for this site and checked with an independent parser.
Download
sample-zip-10kb.zip
10 KB10,240 bytes
Download 10 KB ZIPDirect download. No sign-up and no waiting.
- Type
- application/zip
- SHA-256
2ebb29957dc55d1df4e8065eef214210aa75c8829e28fc078875474379829172- Direct URL
https://sampletestfiles.com/downloads/zip/sample-zip-10kb.zip
What is in this file
4 entries: a README, a CSV file and a JSON file compressed with deflate, plus payload.bin, 6,986 pseudo-random bytes stored without compression so the archive is exactly 10,240 bytes.
| Entries | 4 |
|---|---|
| Compression | Deflate for text entries, stored for payload.bin |
| Encrypted | No |
| ZIP64 | No |
| Largest entry | payload.bin, 6,986 bytes |
First bytes of the file
The first 64 bytes of sample-zip-10kb.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 11 4f |PK..........!\.O|
00000010 fc 5e 6b 00 00 00 7a 00 00 00 0a 00 00 00 52 45 |.^k...z.......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 44 70 05 36 c4 82 04 13 9b 5b |....#.Dp.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 10 KB matters
A 10,240-byte file that still arrives in the first round trip of a new connection. These are the default limits a file of this size is useful for testing:
| System | Limit | Note |
|---|---|---|
| TCP initial congestion window | About 14.6 KB (10 segments) | A 10 KB response fits in the first flight of packets; the 25 KB sample does not. |
| nginx and Apache request headers | 8 KB per header line by default | Data this large must go in the request body. |
| webpack asset modules | 8 KB by default | Assets over the threshold are emitted as files instead of data URIs. |
Use this file for
- Checking thumbnail and icon handling
- Testing bulk import features
- Testing archive uploads and extraction
Testing notes for ZIP
- Windows reports ZIP uploads as application/x-zip-compressed, so allow-lists need both MIME types.
- An archive can expand to far more than its own size. Enforce limits on total extracted bytes and entry count to guard against zip bombs.
Technical details
| File name | sample-zip-10kb.zip |
|---|---|
| Format | ZIP (ZIP archive) |
| Extension | .zip |
| MIME type | application/zip |
| Size | 10,240 bytes (10 KB) |
| Kind | Binary |
| Signature | 50 4B 03 04 |
| SHA-256 | 2ebb29957dc55d1df4e8065eef214210aa75c8829e28fc078875474379829172 |
| 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-10kb.zip 'https://sampletestfiles.com/downloads/zip/sample-zip-10kb.zip'
sha256sum sample-zip-10kb.zip # Linux
shasum -a 256 sample-zip-10kb.zip # macOSOn Windows, run Get-FileHash sample-zip-10kb.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 10 KB?
- Yes. It is 10,240 bytes, which is 10 KB in the binary units that operating systems and server limits use (1 KB = 1,024 bytes).
- What is inside the 10 KB ZIP file?
- 4 entries: a README, a CSV file and a JSON file compressed with deflate, plus payload.bin, 6,986 pseudo-random bytes stored without compression so the archive is exactly 10,240 bytes.
- What is inside the sample ZIP files?
- A README, a small CSV file, a small JSON file and a payload.bin entry of pseudo-random bytes that sets the archive size. The smallest archives hold fewer entries.