Overview

Free URL Shortener (Ulvis.net) is a no-auth API that lets you shorten URLs and optionally set custom aliases, all completely free. It offers a simple REST interface where you send a URL and receive a shortened link without needing to register or obtain an API key. This makes it one of the fastest APIs to integrate for basic URL shortening needs.

Beginner Tip

Use the GET API endpoint with your URL as a query parameter to instantly get a short link with no sign-up required. You can also pass a custom alias parameter to create a memorable short URL.

Available Data

The kind of data this API exposes, based on its documentation. We could not call the endpoint to confirm the exact field names.

shortened URL
original URL
click count
creation date

Example Response

Illustrative shape only — we were not able to call this endpoint (it requires credentials or exposes no public sample URL), so the fields below show the kind of data this API returns rather than a recorded response.

JSON Response · Illustrative
{
  "id": "abc123",
  "short_url": "https://short.ly/abc123",
  "long_url": "https://example.com/very/long/url/path",
  "clicks": 1542,
  "created_at": "2025-01-10T14:30:00Z"
}

Field Reference

status success or error indicating the result of the request
data The generated short URL when the request is successful
error Error message describing what went wrong when status is error

Implementation Example

Calls a real endpoint of this API. Replace any placeholder credentials with your own key.

Request
const url = "https://ulvis.net/";
const response = await fetch(url);
if (!response.ok) throw new Error(`Request failed: ${response.status}`);
const data = await response.json();
console.log(data);

What Can You Build?

Note: These code examples are AI-generated and unverified. Always refer to the official API documentation for accurate usage.

Common Errors & Troubleshooting

Generated guidance based on this API's documentation, not observed by us. Treat it as a starting point and check against the provider's own error reference.

Custom alias already taken The custom alias you specified is already in use by another user
Choose a different, more unique alias or omit the alias parameter to get an auto-generated one
Invalid URL format The URL passed does not start with http:// or https://
Always include the full URL scheme and ensure the URL is properly encoded
Rate limit exceeded Too many requests sent from the same IP in a short time period
Add delays between requests and cache results to avoid re-shortening the same URLs

Metadata Score Breakdown

Estimated from metadata — endpoint not independently tested

This score is estimated from observable metadata — HTTPS support, authentication model, declared CORS, and documentation reachability — because the API requires authentication or exposes no publicly testable endpoint. The five-signal breakdown is only shown for live-tested APIs.

Metadata estimate · endpoint not independently tested

Technical Specifications

Auth No Auth
HTTPS REQUIRED
CORS UNKNOWN
Category Url Shorteners
Difficulty Beginner
Listing details not endpoint-verified

Related Tags

Similar APIs

View All →