URL Encoder / Decoder

Safely encode and decode URL components and parameters.

About URL Encoder / Decoder

Safely encode and decode URL components with this tool. It ensures that special characters in your query strings or URLs are properly percent-encoded.

How to use

Paste a URL or a query parameter into the input area. Toggle between Encode and Decode modes to instantly translate special characters like spaces, ampersands, and equals signs.

Why use this tool?

Malformed URLs can break web requests and API calls. This tool guarantees your URLs conform to RFC 3986 standards without sending your proprietary endpoints to an external server.

Frequently Asked Questions

What is the difference between encodeURI and encodeURIComponent?

encodeURI encodes a full URL but leaves characters like /, ?, and & intact. encodeURIComponent encodes a single component (like a query parameter value) and escapes those characters too. This tool lets you choose the appropriate mode.

Why do spaces become %20 or + in URLs?

Spaces are illegal in URLs. %20 is the strict percent-encoding per RFC 3986, while + is a legacy form used in HTML form data (application/x-www-form-urlencoded). This tool uses %20 by default.

Can I decode multiple parameters at once?

Yes. Paste the full query string (e.g. foo=hello%20world&bar=test%21) into the input and the tool will decode all components simultaneously.

Is URL Encoder / Decoder free to use?

Yes, URL Encoder / Decoder is completely free to use with no account, subscription, or hidden fees required — ever.

Does my data get uploaded to a server?

No. URL Encoder / Decoder processes everything directly inside your browser using modern Web APIs. Your data is never sent to any server, ensuring complete privacy.

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Initializing Tool...

Frequently Asked Questions

What is the difference between encodeURI and encodeURIComponent?

Why do spaces become %20 or + in URLs?

Spaces are illegal in URLs. %20 is the strict percent-encoding per RFC 3986, while + is a legacy form used in HTML form data (application/x-www-form-urlencoded). This tool uses %20 by default.

Can I decode multiple parameters at once?

Yes. Paste the full query string (e.g. foo=hello%20world&bar=test%21) into the input and the tool will decode all components simultaneously.

Is URL Encoder / Decoder free to use?

Yes, URL Encoder / Decoder is completely free to use with no account, subscription, or hidden fees required — ever.

Does my data get uploaded to a server?

No. URL Encoder / Decoder processes everything directly inside your browser using modern Web APIs. Your data is never sent to any server, ensuring complete privacy.