Cereio

URL Encoder/Decoder

Text/URL Input

0 characters

Encoding Results

No encoding result

Enter some text or URL to see the processed result here.

About URL Encoder/Decoder

Our free online URL Encoder and Decoder helps you encode special characters for safe URL transmission and decode percent-encoded URLs back to readable text. Essential for working with query strings, API parameters, and web development.

Key Features

Encode & Decode

Convert text to URL-safe format or decode percent-encoded URLs.

Real-time Processing

See results instantly as you type.

Full Character Support

Handles all special characters, Unicode, and emoji.

100% Client-side

All encoding/decoding happens in your browser - your data stays private.

Copy & Download

One-click copy or download results.

Component Encoding

Uses encodeURIComponent for proper URL component encoding.

How to Use

  1. 1Choose 'Encode' to make text URL-safe, or 'Decode' to convert back.
  2. 2Enter or paste your text or URL in the input area.
  3. 3The result appears instantly in the output area.
  4. 4Copy the result for use in your URLs or applications.

Pro Tips

  • 💡Always encode user input before adding it to URLs.
  • 💡Spaces become %20 or + depending on the context.
  • 💡Reserved characters like & and = must be encoded in query values.
  • 💡Double-check decoded URLs before visiting them for security.

Frequently Asked Questions

What is URL encoding?
URL encoding (percent encoding) converts special characters to a format safe for URLs using %XX where XX is the hexadecimal ASCII value.
Why do URLs need encoding?
URLs can only contain a limited set of ASCII characters. Special characters, spaces, and non-ASCII characters must be encoded to be transmitted correctly.
What's the difference between encodeURI and encodeURIComponent?
encodeURI encodes a full URL, preserving characters like : / ? &. encodeURIComponent encodes everything, suitable for query parameter values.
Why does space become %20 or +?
In URLs, space is %20. In form data (application/x-www-form-urlencoded), space becomes +. Both are valid in different contexts.