URL Encoder

Introduction

The URL Encoder converts text and full URLs into percent-encoded form so they are safe to include in query strings, form data, and HTTP requests. It’s useful for developers, QA, and content authors who need to ensure spaces, punctuation, and non-ASCII characters won’t break links or be misinterpreted by servers and browsers.

What is this tool?

URLs may only contain a limited set of characters; others must be percent-encoded (also called URL encoding). The tool replaces reserved or unsafe characters with %HH hexadecimal sequences after encoding the text as UTF-8. For example, a space becomes %20, and the non-ASCII character “©” becomes %C2%A9. Proper encoding follows RFC 3986 rules and helps avoid broken queries and injection issues.

Why use this tool?

• Query safety: Ensure user input placed into URLs or query parameters won’t break parsing.
• Form and API requests: Encode parameters before sending them in GET requests or URLs.
• International characters: Safely include non-ASCII characters (UTF-8) in links and parameters.
• Prevent ambiguity: Avoid misinterpretation of reserved characters like &, =, #, and ?.
• Copy/paste safety: Share links that remain intact when pasted into different contexts or systems.

How to use it

1. Paste or type the text or full URL you want to encode into the input field.
2. Choose whether to encode the whole URL (including path and query separators) or only parameter values (recommended when building query strings).
3. Select encoding options if available (UTF-8 is the standard; choose whether to encode spaces as %20 or + for form-encoding).
4. Click “Encode.” Copy the percent-encoded output for use in links, API calls, or forms.
5. To revert, use the Decode option to turn percent-encoded sequences back into readable text.

Example

Input:

https://example.com/search?q=funny cats & memes

Encoded (parameter values encoded):

https://example.com/search?q=funny%20cats%20%26%20memes

Encoded (full URL encoded):

https%3A%2F%2Fexample.com%2Fsearch%3Fq%3Dfunny%2520cats%2520%2526%2520memes

Interpretation: Encoding only parameter values is the usual approach when constructing query strings. Fully encoding a URL is useful when embedding it as data inside another URL.

FAQ

Do you store the URLs I encode?
No — inputs are processed in real time and are not retained. If your deployment logs inputs for debugging, disclose this in your Privacy Policy.

When should I encode the whole URL vs. only parameters?
Encode parameter values when building queries. Encode a whole URL only when embedding it as a value in another URL or when a context requires a single opaque string.

What about spaces encoded as "+"?
In application/x-www-form-urlencoded (HTML form data), spaces are often encoded as +. For general URL encoding (RFC 3986), encode spaces as %20. Choose based on the consuming API or context.

Can double-encoding be a problem?
Yes. Encoding an already-encoded value will change the percent signs into %25 sequences and produce incorrect results. Decode before re-encoding if needed.

Is this safe for sensitive data?
Encoding hides characters but does not encrypt data. Do not rely on percent-encoding to protect secrets — use HTTPS and proper encryption or tokenization for sensitive information.