200 KB GZ sample

A GZ file of exactly 204,800 bytes. It is a valid Gzip compressed file file, generated by this site. Compare its checksum and test it with the parser used by your application. Use it wherever you need a 200 KB sample, test or dummy GZ file.

sample-gz-200kb.gz

200 KB204,800 bytes

Download 200 KB GZ

Created in your browser in a few seconds, then checked against the SHA-256 checksum. The file is not uploaded anywhere. No sign-up.

Type: application/gzip
SHA-256: 13f85752538789af96b147ae3ed70cb392a683eb2f9acb57a39d174ed70f73b6
Delivery: Created in your browser from static generator assets (how it works).

What is in this file

One gzip member that expands to sample.log, 9,963 access-log lines (1,695,788 bytes). 4,058 bytes of text in the optional gzip header comment field bring the file to the exact size.

Compressed member	sample.log
Uncompressed size	1,695,788 bytes
Compression method	Deflate
Members	1
Original file name stored	Yes

First bytes of the file

The first 64 bytes of sample-gz-200kb.gz as a hex dump: offset, bytes, then the same bytes as text. The GZ signature is 1F 8B 08.

00000000  1f 8b 08 18 00 b9 55 69  00 03 73 61 6d 70 6c 65 |......Ui..sample|
00000010  2e 6c 6f 67 00 53 61 6d  70 6c 65 54 65 73 74 46 |.log.SampleTestF|
00000020  69 6c 65 73 20 73 61 6d  70 6c 65 20 61 72 63 68 |iles sample arch|
00000030  69 76 65 2e 20 41 6c 69  67 6e 6d 65 6e 74 20 70 |ive. Alignment p|

Preview

GZ files cannot be shown in a browser. Download the file and open it in an application that reads GZ, such as gzip and gunzip.

Where 200 KB matters

A 204,800-byte file: twice the default body limit of most API frameworks, and a common cap for photo and signature uploads on application forms. These are the default limits a file of this size is useful for testing:

System	Limit	Note
Express body parsers	100 KB by default	Rejected with 413 unless the limit is raised.
Amazon DynamoDB items	400 KB per item	200 KB fits, even after base64 encoding takes it to about 273 KB.
Azure Service Bus, Standard tier	256 KB per message	Fits as raw bytes, but not once base64-encoded.

All 200 KB sample files

Use this file for

Checking email size handling
Testing streaming decompression
Testing decompression of uploads and log archives

Testing notes for GZ

A small .gz can decompress to gigabytes. Stream and cap the output rather than inflating it into memory.
If a server sends a .gz file with Content-Encoding: gzip, the client transparently decompresses it and saves a file whose content does not match its name.

GZ format reference

Technical details

File name	sample-gz-200kb.gz
Format	GZ (Gzip compressed file)
Extension	.gz
MIME type	application/gzip
Size	204,800 bytes (200 KB)
Kind	Binary
Signature	1F 8B 08
SHA-256	13f85752538789af96b147ae3ed70cb392a683eb2f9acb57a39d174ed70f73b6
Created	2026-10-23
Validation	See the listed size and SHA-256. Small downloads are checked in the browser; verify streamed downloads manually. A hash match does not prove parser compatibility.
Preview	Not available for this file; details only
Source	Generated in your browser by this site's generator; not copied from elsewhere
Licence	Free to use, modify and redistribute (terms)
Category	Archives

Check the stated structure and checksum against your application requirements. As with any download, scan the file with your own security tools before opening it. How files are made and checked

Verify your copy

This file is created in your browser, so it has no direct URL for curl or wget. The generator is designed to produce reproducible bytes. After saving, compare the checksum with the SHA-256 value above.

sha256sum sample-gz-200kb.gz     # Linux
shasum -a 256 sample-gz-200kb.gz # macOS

On Windows, run Get-FileHash sample-gz-200kb.gz -Algorithm SHA256 in PowerShell. For scripts and pipelines, save the file once and keep your own copy.

Related files

Questions about this file

Is this file exactly 200 KB?: Yes. It is 204,800 bytes, which is 200 KB in the binary units that operating systems and server limits use (1 KB = 1,024 bytes).
What is inside the 200 KB GZ file?: One gzip member that expands to sample.log, 9,963 access-log lines (1,695,788 bytes). 4,058 bytes of text in the optional gzip header comment field bring the file to the exact size.
What do the sample .gz files decompress to?: A text file named sample.log containing web-server access log lines. The uncompressed size is shown on each download page.

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