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 20 Aug 2026

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 20 Aug 2026, 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

Parameter	Type	Required	Description
`url`	string	Required	The URL to shorten, form-encoded in the POST body. `https%3A%2F%2Fexample.com`
`Content-Type`	header	Required	application/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.

Alternatives to CleanURI API

If CleanURI does not fit, these utility apis cover similar ground. Every one was called before publishing, and each links to its own reference page with a working curl command and the response it returned.

API	What it does	Auth	CORS	Last verified
Agify	Free API that estimates age from a first name using public name data. No key for 100 requests/day. Tested curl example, live response and accuracy caveats.	No key	Yes	19 Aug 2026
Genderize	Free API estimating the gender statistically associated with a first name, with a probability score. 100 requests/day, no key. Tested example and caveats.	No key	Yes	19 Aug 2026
Nationalize	Free API predicting likely nationality from a first name, returning ranked countries with probabilities. 100 requests/day, no key. Tested curl example.	No key	Yes	19 Aug 2026
Random User Generator	Free random user generator API with no key: names, addresses, emails, photos and logins in multiple nationalities. Seeded and reproducible. Tested example.	No key	Yes	19 Aug 2026
Colormind	Free AI colour palette API with no key: generate harmonious five-colour palettes, or lock colours and let the model complete the rest. Tested POST example.	No key	Yes	20 Aug 2026
DigiDates	Free date utility API with no key: validate dates, compute age, week numbers, leap years, Unix timestamps and progress through a period. Tested example included.	No key	Yes	21 Aug 2026

All Utility APIs

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