20 MB TSV sample

A TSV file of exactly 20,971,520 bytes. It is a valid Tab-separated values file, generated by this site. Compare its checksum and test it with the parser used by your application. Use it wherever you need a 20 MB sample, test or dummy TSV file.

sample-tsv-20mb.tsv

20 MB20,971,520 bytes

Download 20 MB TSV

Created in your browser in a few seconds, then checked against the SHA-256 checksum. No sign-up.

Type: text/tab-separated-values
SHA-256: af5d82cfde426a7a7958ad22c9147fed1cacbf7da00045fb61badd2fa1406ac9
Delivery: Created in your browser from static generator assets (how it works).

What is in this file

A header row and 155,613 rows of fictional customer records in 12 tab-separated columns, with no quoting. The notes field of the last row is lengthened so the file lands on the exact byte count.

Data rows	155,613
Columns	12
Delimiter	Tab
Header row	Yes
Line endings	LF
Quoting	None: no field contains a tab or a line break
Encoding	UTF-8 (ASCII characters only)

How the file begins

The opening lines of sample-tsv-20mb.tsv, exactly as they appear in the file.

00000000  69 64 09 66 69 72 73 74  5f 6e 61 6d 65 09 6c 61 |id.first_name.la|
00000010  73 74 5f 6e 61 6d 65 09  65 6d 61 69 6c 09 70 68 |st_name.email.ph|
00000020  6f 6e 65 09 63 69 74 79  09 63 6f 75 6e 74 72 79 |one.city.country|
00000030  09 73 69 67 6e 75 70 5f  64 61 74 65 09 70 6c 61 |.signup_date.pla|

Preview

Creates the file in your browser and shows its first 64 KB.

Where 20 MB matters

A 20,971,520-byte file: right at the default attachment limit of Outlook, and just under the 25 MB ceilings of Gmail and GitHub web uploads. These are the default limits a file of this size is useful for testing:

System	Limit	Note
Microsoft Outlook	20 MB of attachments by default for internet mail accounts	This file is right at the limit; add a second attachment and it is exceeded.
Gmail	25 MB per message	Under the limit, although email encoding adds about a third in transit.
GitHub web uploads	25 MiB per file added through the browser	Accepted. Pushing with Git allows larger files.
Cloudflare Pages assets	25 MiB per file	The largest round size that can be served as a static asset.
Amazon API Gateway	10 MB payload	Rejected; the upload has to go directly to object storage.
ASP.NET Core (Kestrel)	About 28.6 MB request body by default	Accepted with room for the multipart overhead.

All 20 MB sample files

Use this file for

Measuring download speed from your own server or CDN
Testing data pipelines that split fields on tabs
Testing import features that accept more than one delimiter

Testing notes for TSV

Windows does not open .tsv in Excel by default, so users rename files to .txt or .csv, and the extension stops describing the content.
A field cannot contain a tab or a line break. Exporters deal with that in incompatible ways: some write backslash escapes such as \t, some apply CSV-style quotation marks, and some corrupt the row.

TSV format reference

Technical details

File name	sample-tsv-20mb.tsv
Format	TSV (Tab-separated values)
Extension	.tsv
MIME type	text/tab-separated-values
Size	20,971,520 bytes (20 MB)
Kind	Text
SHA-256	af5d82cfde426a7a7958ad22c9147fed1cacbf7da00045fb61badd2fa1406ac9
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	Available on this page
Source	Generated in your browser by this site's generator; not copied from elsewhere
Licence	Free to use, modify and redistribute (terms)
Category	Spreadsheets

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-tsv-20mb.tsv     # Linux
shasum -a 256 sample-tsv-20mb.tsv # macOS

On Windows, run Get-FileHash sample-tsv-20mb.tsv -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 20 MB?: Yes. It is 20,971,520 bytes, which is 20 MB in the binary units that operating systems and server limits use (1 KB = 1,024 bytes).
What is inside the 20 MB TSV file?: A header row and 155,613 rows of fictional customer records in 12 tab-separated columns, with no quoting. The notes field of the last row is lengthened so the file lands on the exact byte count.
Do the TSV and CSV samples hold the same data?: Yes. Both have the same twelve columns of fictional customer records. The TSV files use tabs and LF line endings where the CSV files use commas and CRLF.

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