URL Encoder & Decoder – Free Online Tool

Encode or decode URLs instantly. Escape special characters for safe web transmission. 100% browser-based.

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Features

🔄

Encode & Decode

Toggle between encode and decode modes. Bidirectional conversion with a single click.

🌐

Full URL or Component

Encode an entire URL or just a query parameter value. Choose the right mode for your needs.

⚡

Instant Preview

Results update as you type. No submit button needed.

🔒

Privacy First

All processing happens locally in your browser. No data is sent to any server.

📋

One-Click Copy

Copy the encoded or decoded URL to your clipboard with a single click.

📜

History View

See the original vs encoded comparison for clarity on what changed.

How to Use

1

Choose Mode

Select Encode or Decode. For URLs, use Encode URL. For query parameter values, use Encode Component.

2

Enter URL or Text

Paste your URL or text into the input field.

3

View Result

The encoded or decoded result appears instantly below.

4

Copy and Use

Copy the result to use in your URL, API call, or any web context.

Frequently Asked Questions

What is URL encoding?
URL encoding (percent-encoding) converts characters into a format that can be transmitted over the Internet. Special characters are replaced with % followed by two hex digits, e.g., space becomes %20.
What's the difference between encodeURI and encodeURIComponent?
encodeURI preserves characters that are valid in a full URL (/, ?, &, =) but encodes everything else. encodeURIComponent encodes all special characters including those used in URLs. Use encodeURIComponent for query parameter values.
What characters get encoded?
In encodeURIComponent: all letters, digits, - _ . ! ~ * ' ( ) are preserved. Everything else (including spaces, #, $, &, +, ,, /, :, ;, =, ?, @) is percent-encoded.
Can I decode a full URL?
Yes. Paste the full URL and select Decode to see the original characters.
Is my data sent to a server?
No. All encoding and decoding is done in the browser using JavaScript's native encodeURI, encodeURIComponent, decodeURI, and decodeURIComponent functions.

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