10 KB JSONL sample file
A JSONL file of exactly 10,240 bytes. It is a valid JSON Lines file, generated for this site and checked with an independent parser.
Download
sample-jsonl-10kb.jsonl
10 KB10,240 bytes
Download 10 KB JSONLDirect download. No sign-up and no waiting.
- Type
- application/jsonl
- SHA-256
3cd2762351fc606794aa6cde3a9083301242aa670562afab779f4f6b9e3734f7- Direct URL
https://sampletestfiles.com/downloads/jsonl/sample-jsonl-10kb.jsonl
What is in this file
30 JSON objects, one per line, followed by one short object whose "note" string is lengthened to reach the exact size.
| Lines | 31 |
|---|---|
| Records per line | 1 |
| Encoding | UTF-8 (ASCII characters only) |
| Line endings | LF |
How the file begins
The opening lines of sample-jsonl-10kb.jsonl, exactly as they appear in the file.
{"id":1,"uuid":"a6cf3b6b-cd57-4173-a942-a2339c75f449","name":{"first":"Ethan","last":"Zeller"},"email":"ethan.zeller1@example.com","active":true,"bala…
{"id":2,"uuid":"e86fd25c-cc5a-44ae-a8ee-4439d8d6c68e","name":{"first":"Elena","last":"Underhill"},"email":"elena.underhill2@example.net","active":true…Preview
Shows the file contents.
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 endpoints
- Checking log processors
Testing notes for JSONL
- Passing the whole file to a standard JSON parser fails, because the file as a whole is not one JSON value.
- A blank line or a trailing comma on any line breaks strict readers, so decide how your importer treats them.
Technical details
| File name | sample-jsonl-10kb.jsonl |
|---|---|
| Format | JSONL (JSON Lines) |
| Extension | .jsonl |
| MIME type | application/jsonl |
| Size | 10,240 bytes (10 KB) |
| Kind | Text |
| SHA-256 | 3cd2762351fc606794aa6cde3a9083301242aa670562afab779f4f6b9e3734f7 |
| 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 | Data |
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-jsonl-10kb.jsonl 'https://sampletestfiles.com/downloads/jsonl/sample-jsonl-10kb.jsonl'
sha256sum sample-jsonl-10kb.jsonl # Linux
shasum -a 256 sample-jsonl-10kb.jsonl # macOSOn Windows, run Get-FileHash sample-jsonl-10kb.jsonl -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 JSONL file?
- 30 JSON objects, one per line, followed by one short object whose "note" string is lengthened to reach the exact size.
- How is JSONL different from JSON?
- A JSON file is one value, usually an array. A JSONL file is many values separated by line breaks, which can be appended to and read as a stream.