100 KB JS sample file
A JS file of exactly 102,400 bytes. It is a valid JavaScript source file file, generated for this site and checked with an independent parser.
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sample-js-100kb.js
100 KB102,400 bytes
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- Type
- text/javascript
- SHA-256
8bb7f2f42c841d2ce652b719703042d407dff0acff87b03a2ad1f41a91db166a- Direct URL
https://sampletestfiles.com/downloads/js/sample-js-100kb.js
What is in this file
A "records" array of 833 object literals and two small helper functions. Line comments at the end bring the script to the exact size.
| Array entries | 833 |
|---|---|
| Syntax | ECMAScript 2015+, strict mode |
| Side effects on load | None |
| Encoding | UTF-8 (ASCII characters only) |
How the file begins
The opening lines of sample-js-100kb.js, exactly as they appear in the file.
// SampleTestFiles sample JavaScript file (100 KB)
// Plain ECMAScript with no dependencies. It defines data and two helper functions and runs nothing on load.
'use strict';
const records = [
{ id: 1, name: 'Ethan Zeller', email: 'ethan.zeller1@example.com', plan: 'team', balance: 2769.84, active: true },
{ id: 2, name: 'Elena Underhill', email: 'elena.underhill2@example.net', plan: 'free', balance: 4647.61, active: true },
{ id: 3, name: 'Ethan Farrow', email: 'ethan.farrow3@example.org', plan: 'business', balance: 536.73, active: false },
{ id: 4, name: 'Victor Brennan', email: 'victor.brennan4@example.com', plan: 'business', balance: 2410.43, active: true },
{ id: 5, name: 'Felix Ibarra', email: 'felix.ibarra5@example.net', plan: 'starter', balance: 2832.21, active: false },Preview
Shows the first 64 KB of the file.
Where 100 KB matters
A 102,400-byte file that sits exactly on the default request-body limit of Express. These are the default limits a file of this size is useful for testing:
| System | Limit | Note |
|---|---|---|
| Express body parsers | 100 KB (102,400 bytes) by default | A request body of exactly this size passes; anything larger returns 413 Payload Too Large. |
| Gmail message clipping | About 102 KB of HTML | Longer messages are truncated behind a "view entire message" link. |
| Amazon DynamoDB items | 400 KB per item | 100 KB fits; the 500 KB sample does not. |
Use this file for
- Checking email size handling
- Testing static asset delivery and caching
- Testing bundlers and minifiers with large inputs
Testing notes for JS
- Never execute an uploaded script. Treat .js uploads as text to be stored or analysed.
- The old types application/javascript and application/x-javascript are obsolete; text/javascript is the registered type.
Technical details
| File name | sample-js-100kb.js |
|---|---|
| Format | JS (JavaScript source file) |
| Extension | .js |
| MIME type | text/javascript |
| Size | 102,400 bytes (100 KB) |
| Kind | Text |
| SHA-256 | 8bb7f2f42c841d2ce652b719703042d407dff0acff87b03a2ad1f41a91db166a |
| 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 | Code |
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
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curl -o sample-js-100kb.js 'https://sampletestfiles.com/downloads/js/sample-js-100kb.js'
sha256sum sample-js-100kb.js # Linux
shasum -a 256 sample-js-100kb.js # macOSOn Windows, run Get-FileHash sample-js-100kb.js -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 100 KB?
- Yes. It is 102,400 bytes, which is 100 KB in the binary units that operating systems and server limits use (1 KB = 1,024 bytes).
- What is inside the 100 KB JS file?
- A "records" array of 833 object literals and two small helper functions. Line comments at the end bring the script to the exact size.
- Does the sample script do anything when loaded?
- No. It defines an array and two functions and has no side effects.