100 KB CSS sample file
A CSS file of exactly 102,400 bytes. It is a valid Cascading Style Sheets file, generated for this site and checked with an independent parser.
Download
sample-css-100kb.css
100 KB102,400 bytes
Download 100 KB CSSDirect download. No sign-up and no waiting.
- Type
- text/css
- SHA-256
c3c35e535cc6676f5e2f5229e370cb2a6ee3ee873bcdf622822a3b568e426775- Direct URL
https://sampletestfiles.com/downloads/css/sample-css-100kb.css
What is in this file
A :root block with custom properties, a body rule and 1,048 class rules. A closing comment brings the stylesheet to the exact size.
| Rules | 1,050 |
|---|---|
| Features | Custom properties, class selectors, rem and px units |
| Encoding | UTF-8 (ASCII characters only) |
How the file begins
The opening lines of sample-css-100kb.css, exactly as they appear in the file.
/* SampleTestFiles sample CSS file (100 KB) */
:root {
--ink: #16202b;
--paper: #fafbfc;
}
body {
color: var(--ink);
background: var(--paper);
font-family: system-ui, sans-serif;
}
.sample-1 {
color: #ebebeb;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 code editors and syntax highlighters
- Testing minifiers and bundlers
Testing notes for CSS
- With X-Content-Type-Options: nosniff, browsers refuse a stylesheet that is not served as text/css.
Technical details
| File name | sample-css-100kb.css |
|---|---|
| Format | CSS (Cascading Style Sheets) |
| Extension | .css |
| MIME type | text/css |
| Size | 102,400 bytes (100 KB) |
| Kind | Text |
| SHA-256 | c3c35e535cc6676f5e2f5229e370cb2a6ee3ee873bcdf622822a3b568e426775 |
| 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
Fetch the file with curl, then compare its checksum with the SHA-256 value above.
curl -o sample-css-100kb.css 'https://sampletestfiles.com/downloads/css/sample-css-100kb.css'
sha256sum sample-css-100kb.css # Linux
shasum -a 256 sample-css-100kb.css # macOSOn Windows, run Get-FileHash sample-css-100kb.css -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 CSS file?
- A :root block with custom properties, a body rule and 1,048 class rules. A closing comment brings the stylesheet to the exact size.
- What do the sample stylesheets contain?
- Custom properties, a body rule and a long list of class rules, with no @import rules or external URLs.