Free URL Encoder & Decoder API - RFC 3986

Parameters

name	in	type	required	description
`input`	body	string	required	Input Text
`action`	body	string	required	Action one of `encodedecode` default `encode`

Request

Send your key in the X-API-Key header. More languages and patterns live on the code examples page.

curl -s -X POST "https://apixies.io/api/v1/url-encode" \
  -H "X-API-Key: YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"input":"hello world & foo=bar","action":"encode"}'

const res = await fetch("https://apixies.io/api/v1/url-encode", {
  method: "POST",
  headers: {
    "X-API-Key": "YOUR_API_KEY",
    "Content-Type": "application/json"
  },
  body: JSON.stringify({
      "input": "hello world & foo=bar",
      "action": "encode"
  })
});
const data = await res.json();
console.log(data);

$ch = curl_init("https://apixies.io/api/v1/url-encode");
curl_setopt_array($ch, [
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_CUSTOMREQUEST => "POST",
    CURLOPT_HTTPHEADER => [
        "X-API-Key: YOUR_API_KEY",
        "Content-Type: application/json",
    ],
    CURLOPT_POSTFIELDS => '{"input":"hello world & foo=bar","action":"encode"}',
]);
$data = json_decode(curl_exec($ch), true);
curl_close($ch);

print_r($data);

import requests

res = requests.request(
    "POST",
    "https://apixies.io/api/v1/url-encode",
    json={
        "input": "hello world & foo=bar",
        "action": "encode"
    },
    headers={"X-API-Key": "YOUR_API_KEY"},
)
print(res.json())

Response

The result sits under data in the standard envelope. See the response format guide for errors and status codes.

returns

data.output: The encoded or decoded string.
data.action: Whether you encoded or decoded.
data.output_length: Length of the result in bytes.

example response 200

{
    "status": "success",
    "http_code": 200,
    "code": "SUCCESS",
    "message": "URL encode completed",
    "data": {
        "input": "hello world & foo=bar",
        "output": "hello%20world%20%26%20foo%3Dbar",
        "action": "encode",
        "input_length": 21,
        "output_length": 31,
        "converted_at": "2026-09-18T12:00:00+00:00"
    }
}

Authentication and limits

This endpoint needs an API key. Use the sandbox ("try it" above) to test it without registering. See the authentication guide for details.

Standard rate limits apply to this endpoint.

Common use cases

API query string building

Safely encode parameter values for inclusion in API query strings. Handle special characters that would break URL parsing.

Redirect URL construction

Encode callback URLs and redirect parameters for OAuth flows and authentication redirects where URLs are passed as parameters.

Deep link generation

Encode complex URLs for use in deep links, QR codes, or email tracking parameters where URL-safe encoding is required.

related endpoints

POST Base64 Encode/Decode Encode or decode Base64 strings GET URL Validator Validate a URL's format, reachability, SSL status, and response details GET Redirect Tracer Follow a URL's redirect chain and report each hop with status code

getting started

authentication code examples response format

explore

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resources

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