1 KB TXT sample file
A TXT file of exactly 1,024 bytes. It is a valid Plain text file, generated for this site and checked with an independent parser.
Download
- Type
- text/plain
- SHA-256
5f6101a40e9bc3152052a15d651b870babc56f175082b39c401566f68bb2d019- Direct URL
https://sampletestfiles.com/downloads/txt/sample-txt-1kb.txt
What is in this file
8 numbered lines of plain English text, each prefixed with its line number and starting byte offset so truncation is easy to spot. A closing rule of "=" characters brings the file to the exact size.
| Numbered lines | 8 |
|---|---|
| Encoding | UTF-8 (ASCII characters only) |
| Line endings | LF (Unix) |
How the file begins
The opening lines of sample-txt-1kb.txt, exactly as they appear in the file.
SampleTestFiles sample text file (1 KB)
Encoding: ASCII, which is also valid UTF-8. Line endings: LF.
Each numbered line starts with its line number and the byte offset at which it begins.
0000001 000000190 This sample file exists so that software can be tested with realistic input.
0000002 000000285 Every line in this document was generated by a script and describes nothing confidential.
0000003 000000393 Use it to check that uploads, downloads and parsers behave the way you expect.
0000004 000000490 The file was built to an exact byte count, which makes size limits easy to verify.
0000005 000000591 If the last line of this file is missing, the transfer was cut short.
0000006 000000679 A good test fixture is boring, predictable and identical every time it is downloaded.
0000007 000000783 Compare the checksum published on the download page with the one you compute locally.Preview
Shows the file contents.
Where 1 KB matters
The smallest practical test file: 1,024 bytes, small enough to travel in a single network packet. These are the default limits a file of this size is useful for testing:
| System | Limit | Note |
|---|---|---|
| Ethernet | 1,500 bytes (typical MTU) | A 1 KB payload fits in one packet with its headers. |
| Browser cookies | 4,096 bytes per cookie | 1 KB is well inside the limit; the 5 KB sample is over it. |
Use this file for
- Smoke tests in CI that must run in milliseconds
- Baseline upload and download tests
- Checking encoding handling
Testing notes for TXT
- Plain text compresses very well, so a 10 MB text file may travel as a fraction of that when gzip or Brotli is enabled. Use the BIN samples when you need incompressible bytes.
- Line endings change the byte count: converting LF to CRLF adds one byte per line, which breaks checksum comparisons.
Technical details
| File name | sample-txt-1kb.txt |
|---|---|
| Format | TXT (Plain text) |
| Extension | .txt |
| MIME type | text/plain |
| Size | 1,024 bytes (1 KB) |
| Kind | Text |
| SHA-256 | 5f6101a40e9bc3152052a15d651b870babc56f175082b39c401566f68bb2d019 |
| Created | 2026-10-10 |
| Validation | Exact size, signature bytes and structure checked when the file was generated |
| Preview | Available on this page |
| Source | Generated for this site; not copied from elsewhere |
| Licence | Free to use, modify and redistribute (terms) |
| Category | Documents |
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-txt-1kb.txt 'https://sampletestfiles.com/downloads/txt/sample-txt-1kb.txt'
sha256sum sample-txt-1kb.txt # Linux
shasum -a 256 sample-txt-1kb.txt # macOSOn Windows, run Get-FileHash sample-txt-1kb.txt -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 1 KB?
- Yes. It is 1,024 bytes, which is 1 KB in the binary units that operating systems and server limits use (1 KB = 1,024 bytes).
- What is inside the 1 KB TXT file?
- 8 numbered lines of plain English text, each prefixed with its line number and starting byte offset so truncation is easy to spot. A closing rule of "=" characters brings the file to the exact size.
- Why does each line start with numbers?
- Each line carries its line number and the byte offset where it begins. If a transfer is truncated or corrupted you can see exactly where.