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URL Query Encoder Decoder

Encode and decode URL query strings, query parameters, form-style values, plus signs, percent encoding, and copied URL query text directly in your browser.

Choose a Query String Task

Paste a query string with or without a leading question mark. Full URLs are also supported.

Options

Query encoding uses percent encoding. In form-style query strings, plus signs are often read as spaces.

Output

URL query output will appear here.
URL query encoding and decoding happens directly in your browser. Your pasted query strings and values are not uploaded to a server.

Encoding and Decoding URL Query Strings

Query strings often contain percent-encoded spaces, email addresses, redirect URLs, filters, UTM tags, search text, and copied API parameters. They can become hard to read when everything is packed into one long line.

This URL Query Encoder Decoder turns encoded query text into readable key-value pairs and can build a clean encoded query string from plain keys and values. It is useful for debugging URLs, API requests, tracking links, redirects, and copied browser query strings.

Decoding or Building a Query String

  1. Choose decode, encode, or parse full URL mode.
  2. Paste a query string or add key-value parameter rows.
  3. Choose output format and space handling.
  4. Review decoded keys, values, duplicate keys, and empty values.
  5. Copy the encoded query string, JSON, table, or key-value lines.

Common URL Query Encoder Decoder Use Cases

  • Decoding copied URLs with long query strings.
  • Building API query parameters from readable values.
  • Checking redirect URLs embedded inside query parameters.
  • Reading UTM campaign parameters from a tracking URL.
  • Converting spaces as %20 or plus signs for form-style queries.
  • Finding duplicate or empty query parameters before sharing a URL.

Example Encoded Query String

name=Yoryantra%20User&email=user%40example.com&redirect=https%3A%2F%2Fexample.com%2Fthank-you

Query Strings, Plus Signs, and Percent Encoding

Normal URL percent encoding represents spaces as %20. In form-encoded query strings, spaces are often written as plus signs. That is why a value like hello+world may mean hello world in some query contexts.

Use the plus-as-space option when working with form-style query strings. Turn it off when a literal plus sign should stay as a plus sign.

Frequently Asked Questions

What is a URL query encoder decoder?

It encodes and decodes the query part of a URL, usually the text after the question mark.

Can this parse a full URL?

Yes. Paste a full URL and the tool can extract and decode the query parameters.

What is the difference between this and a normal URL encoder?

A normal URL encoder works on any text. This tool focuses on query strings and key-value parameters, so it is better for reading and building URL queries.

Should plus signs decode as spaces?

In form-style query strings, plus signs often mean spaces. This tool lets you choose how to handle them.

Is my query string uploaded anywhere?

No. Query encoding and decoding happens directly in your browser.