50 MB GZ sample
A GZ file of exactly 52,428,800 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 50 MB sample, test or dummy GZ file.
Download
sample-gz-50mb.gz
50 MB52,428,800 bytes
Download 50 MB GZCreated in your browser and, in browsers that can stream to disk, sent straight to your downloads list; this can take a minute. No sign-up.
- Type
- application/gzip
- SHA-256
99eb1814a3dcfb6a1007419c461a899c2d8c2c6125cd515c14bee2aaaa298736- Delivery
- Created in your browser from static generator assets (how it works).
What is in this file
Two gzip members. The first expands to sample.log, 2,577,684 access-log lines (440,224,278 bytes). The second is empty and carries 570,640 bytes of text in its header comment field, which brings the file to the exact size. Decompressing gives the log.
| Members | 2 (the second is empty) |
|---|---|
| Uncompressed size | 440,224,278 bytes |
| Compression method | Deflate |
| Original file name stored | Yes |
First bytes of the file
The first 64 bytes of sample-gz-50mb.gz as a hex dump: offset, bytes, then the same bytes as text. The GZ signature is 1F 8B 08.
00000000 1f 8b 08 08 00 b9 55 69 00 03 73 61 6d 70 6c 65 |......Ui..sample|
00000010 2e 6c 6f 67 00 32 b4 b4 d0 33 35 d4 33 34 30 d0 |.log.2...35.340.|
00000020 33 56 d0 05 c2 68 03 43 7d af c4 3c 7d 23 03 23 |3V...h.C}..<}#.#|
00000030 33 2b 03 03 08 52 d0 36 00 82 58 05 25 77 d7 10 |3+...R.6..X.%w..|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 50 MB matters
A 52,428,800-byte file: exactly the size at which Git hosting on GitHub starts warning about large files, and about the limit for a zipped AWS Lambda package uploaded directly.
Use this file for
- Measuring download speed from your own server or CDN
- 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.
Technical details
| File name | sample-gz-50mb.gz |
|---|---|
| Format | GZ (Gzip compressed file) |
| Extension | .gz |
| MIME type | application/gzip |
| Size | 52,428,800 bytes (50 MB) |
| Kind | Binary |
| Signature | 1F 8B 08 |
| SHA-256 | 99eb1814a3dcfb6a1007419c461a899c2d8c2c6125cd515c14bee2aaaa298736 |
| 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-50mb.gz # Linux
shasum -a 256 sample-gz-50mb.gz # macOSOn Windows, run Get-FileHash sample-gz-50mb.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 50 MB?
- Yes. It is 52,428,800 bytes, which is 50 MB in the binary units that operating systems and server limits use (1 KB = 1,024 bytes).
- What is inside the 50 MB GZ file?
- Two gzip members. The first expands to sample.log, 2,577,684 access-log lines (440,224,278 bytes). The second is empty and carries 570,640 bytes of text in its header comment field, which brings the file to the exact size. Decompressing gives the log.
- 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.