BYTETOOLS

CleanURI API

Free URL shortener API with no key: shorten any link with a single POST request. No account, no tracking dashboard, just a short URL back. Tested example.

No API key requiredHTTPSFree tier

Endpoint tested and returned HTTP 200 on 2026-08-20

What is the CleanURI API?

CleanURI is a free, key-free URL shortening API. POST a long URL and it returns a shortened link, with no account, registration or API key required.

Most URL shorteners require an account and an API key. CleanURI takes a single form-encoded POST and returns a short link, which makes it genuinely usable from a script or a one-off automation.

The tradeoff is honest to state: with no account there is no dashboard, no click analytics and no ability to edit or delete a link afterwards. Once created, a short URL is out of your control — so do not use it for anything you might need to revoke.

Quick facts

Base URL
https://cleanuri.com/api/v1
Authentication
No API key or account required.
Rate limit
No published hard limit; fair use expected.
Pricing
Free.
CORS
Not enabled — call it from your server
Official docs
Read the docs

How to use the CleanURI API

Every request below was executed against the live API on 2026-08-20, and the response shown is the real body it returned — not an illustration.

1. Shorten a URL

POST https://cleanuri.com/api/v1/shorten

curl
curl -X POST 'https://cleanuri.com/api/v1/shorten' \
  -H 'Content-Type: application/x-www-form-urlencoded' \
  -d 'url=https%3A%2F%2Fbytetools.bytevancer.com'
JavaScript (fetch)
const res = await fetch("https://cleanuri.com/api/v1/shorten", {
  method: "POST",
  headers: {
    "Content-Type": "application/x-www-form-urlencoded",
  },
  body: JSON.stringify(url=https%3A%2F%2Fbytetools.bytevancer.com),
});
if (!res.ok) throw new Error(`Request failed: ${res.status}`);
const data = await res.json();
console.log(data);
Python (requests)
import requests

headers = {
    "Content-Type": "application/x-www-form-urlencoded",
}

payload = url=https%3A%2F%2Fbytetools.bytevancer.com

res = requests.post("https://cleanuri.com/api/v1/shorten", headers=headers, json=payload, timeout=20)
res.raise_for_status()
print(res.json())
Response — HTTP 200
{
  "result_url": "https://cleanuri.com/6zkJLp"
}

Parameters

ParameterTypeRequiredDescription
urlstringRequiredThe URL to shorten, form-encoded in the POST body. https%3A%2F%2Fexample.com
Content-TypeheaderRequiredapplication/x-www-form-urlencoded. application/x-www-form-urlencoded

Response fields

result_urlstring
The shortened URL.
errorstring
Error message when shortening failed.

What you can build with the CleanURI API

  • Shorten links from a script or automation with no setup
  • Generate short URLs for SMS or print where length matters
  • Add link shortening to a tool without managing accounts
  • Create compact URLs for QR codes

Common errors and how to fix them

400 with an error field

The URL is malformed or unsupported.

Fix: Ensure it includes the scheme and is properly form-encoded in the body.

GET returns nothing useful

Shortening requires POST.

Fix: Send a form-encoded POST; there is no GET shortening endpoint.

Cannot delete a link

There is no account, so no management.

Fix: Short URLs are permanent and uneditable — do not use for anything you may need to revoke.

CleanURI API — frequently asked questions

Is CleanURI free?

Yes, completely free with no API key or account required.

Can I delete or edit a short URL later?

No. Without an account there is no management interface, so links are permanent. Do not use it for anything you might need to revoke or change.

Does it provide click analytics?

No. It returns a short link and nothing else. If you need analytics you want a shortener with accounts, such as Bitly.

How do I call it?

Send a form-encoded POST with a `url` parameter. There is no GET shortening endpoint.

Tools that pair with this API

URL Encoder

Percent-encode text for URLs instantly. Switch between encodeURIComponent and encodeURI modes, see live output and copy the result. Free URL encoder.

QR Code Generator

Create QR codes for URLs, Wi-Fi, email, phone and SMS. Pick size, colors and error correction, then download a crisp PNG — free and private.

JSON Formatter

Format, beautify and minify JSON online with 2-space, 4-space or tab indentation. Sort keys alphabetically and catch syntax errors instantly — free and private.

CleanURI is an independent third-party service and is not affiliated with ByteTools or ByteVancer. Details on this page were verified on 2026-08-20; always check the official documentation before relying on this API in production, as terms and limits can change.