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URL Encoder & Decoder — free, and it runs in your browser

Percent-encode or decode URLs and query string values.

  • Encodes and decodes in the same place, so you can check a value survives the round trip.
  • Both variants: full-component encoding, and the looser whole-URL form.
  • Fixes the parameters that break a redirect because a slash was not escaped.

Plain string

Tab indents · Esc then Tab to leave1 line

Percent-encoded

1 line

  • 70 tools

    Free, with no account and no watermark

  • 0 bytes

    Of your files or text uploaded — this tool runs in the tab

  • No queue

    The work happens in this tab, not in a line behind other users

Three steps, nothing to install

URL Encoder & Decoder in three steps

  1. TEXT123456Paste it in — it never leaves the tab

    Paste the value

    A search term, a redirect target, a whole URL — whatever you need escaped or read back.

  2. TEXTENCODEDConverted on your own device

    Encode or decode it

    Choose whether you are escaping a single component or a complete URL, since the two escape different characters.

  3. Copy ENCODED

    Copy it out

    Ready to drop into a link, a config file or a test.

Why use URL Encoder & Decoder

  • Component or whole URL

    Encoding a full URL escapes slashes and colons and breaks it; encoding a component leaves them and breaks the query string. Both are offered because the right answer depends on which you have.

  • Encoded as UTF-8

    Characters outside ASCII are encoded byte by byte as UTF-8, so é becomes %C3%A9, the form servers expect.

  • Your text stays in the page

    What you paste is not transmitted or stored, so an API response full of customer records, a token or an internal query never leaves your machine.

Frequently asked questions

Encode value escapes everything unsafe including / ? & = # — use it for a single query parameter value. Encode whole URL leaves the structural characters intact so the address still works — use it when you have a complete URL containing spaces or accents.

Percent-encoding, and which function to use

URLs may only contain a restricted set of characters. Everything else — spaces, accented letters, most punctuation — has to be written as a percent sign followed by the hexadecimal value of each UTF-8 byte. A space becomes %20, and é becomes %C3%A9 because it is two bytes in UTF-8.

The common mistake is escaping the wrong amount. Escaping a whole URL with the aggressive rule turns https://example.com into https%3A%2F%2Fexample.com, which is no longer a link. Escaping a single parameter value with the permissive rule leaves an & inside the value intact, which splits it into two parameters and silently corrupts the data.

The practical rule

  • Building a query string from user input? Escape each value with the aggressive rule, then join them with & and = yourself.
  • Have a finished URL containing spaces or non-ASCII? Use the whole-URL rule, which leaves the structure alone.

To take a URL apart and inspect its parameters, use the URL parser. For escaping text destined for HTML rather than a URL, use the HTML entity encoder.

Often used alongside

  • URL Parser

    Break a URL into its protocol, host, path and query parameters.

  • Base64 Encoder & Decoder

    Encode text to Base64 or decode it back, with full Unicode support.

  • HTML Entity Encoder

    Escape characters to HTML entities, or decode entities back to text.

  • JWT Decoder

    Decode a JSON Web Token to inspect its header, payload and expiry.

  • Hash Generator

    Generate MD5, SHA-1, SHA-256, SHA-384 and SHA-512 digests of any text.

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