URL Encoder

Runs locally in your browser. Nothing leaves your device.

Percent-encode text, paths, query values, and form data locally in the browser.

Input

URL encoding is context dependent. A full URL must not be encoded like a single query parameter value.

+ represents a space only for application/x-www-form-urlencoded. Normal percent encoding uses %20.

Output

Enter text or add query parameters.

Enter text or add query parameters.

How it works

  1. 1

    Enter text or add parameters

    Enter text or add name-value pairs in the query builder.

  2. 2

    Choose the encoding profile

    Choose the profile matching the target context, plus hex case and percent mode.

  3. 3

    Copy the encoded output

    Copy the encoded output or download it as a file.

Good to know

The URL encoder encodes text directly in your browser according to a chosen encoding profile — single value, path, query, or full URI — since URL encoding is context-dependent and a full URL must not be encoded like a single query value. A query builder additionally lets you assemble parameters as name-value pairs.

The hex case of generated percent sequences can be chosen as upper or lower, and a percent mode determines whether existing %HH sequences are preserved or re-encoded. Encoding should usually be applied to individual parameter values, not blindly to a complete URL.

Typical use cases

Assemble query parameters with the query builder

Add name-value pairs in the query builder to generate a correctly encoded query string with an optional leading question mark.

Encode a single parameter value for an API request

Choose the “single value” profile to correctly encode exactly one parameter value, without altering reserved characters such as & or =.

Tips for better results

Never encode a full URL like a value

If : or / of a full URL get encoded too, the URL stops working — choose the matching profile for path or query instead.

Deliberately handle existing percent signs

Choose “preserve” in percent mode when the text already contains valid %HH sequences, to avoid accidental double encoding.

Features

  • Four encoding profiles

    Single value, path, query, or full URI — matching the respective target context.

  • Query builder

    Add parameter rows to assemble a correctly encoded query string.

  • Local processing

    Your inputs never leave your device; encoding runs entirely in the browser.

Frequently asked questions

Can I encode a full URL with this tool?

Only with caution: encoding should be applied to individual parameter values, not blindly to a complete URL, otherwise structure such as :// or ? gets destroyed.

Are my inputs uploaded?

No. Encoding runs entirely locally in the browser.

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