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URL Encoder Tool

Free online URL encoder. Convert special characters into percent-encoded representations safely client-side to create standard URL strings.

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Configurations

Encodes every special character. Best for query params.

Encoded URL

Premium Online URL Encoder Utility

Need to format your links, query parameters, or web address arguments safely? Our free online URL Encoder allows you to quickly encode special characters into percent-encoded representations in real-time. Whether you need to prepare key-value parameters for query strings using encodeURIComponent or format complete web addresses with encodeURI, our premium developer tool executes everything instantly client-side.

Why Should You Percent-Encode URLs?

Web browsers and web servers rely on specific reserved characters (like ?, &, =, and /) to interpret URL structures, parameters, and paths. If your parameters contain these characters in their literal form, they will break the syntax and corrupt your query requests.

  • Query Integrity: Safely pass special signs, question marks, and delimiters as query parameters.
  • International Characters: Translate Cyrillic, Chinese, Arabic, and other non-ASCII characters into valid URL formats.
  • Form Submission: Prepare key-value inputs safely for API requests following x-www-form-urlencoded structures.
  • Broken Links Prevention: Replace raw spaces and control characters to prevent browser parsing errors.

How to Use the URL Encoder

  1. Input: Type or paste your raw text, path, or URL arguments into the input panel. You can also import text files or import content directly from a URL.
  2. Configure Options: Choose the encoding scheme (encodeURIComponent for parameters, encodeURI for full addresses) and select whether spaces should encode as %20 or +.
  3. Output: The percent-encoded result displays instantly in the output panel. Copy it directly to your clipboard or download it as a raw text file.

Real-time Performance

Experience instant percent-encoding as you type. Our responsive, lightweight client handles large URL queries effortlessly.

Local Execution Privacy

We respect your data. The encoder operates entirely in-browser, preventing sensitive query parameters from leaking to outer networks.

Frequently Asked Questions (FAQ)

URL encoding (also known as percent-encoding) is a mechanism for encoding information in a Uniform Resource Identifier (URI) under certain circumstances. It replaces unsafe ASCII characters with a '%' followed by two hexadecimal digits representing the character's ASCII value.
URLs can only be sent over the Internet using the ASCII character set. Because URLs often contain characters outside the ASCII set, or reserved characters like space, ?, &, and =, URL encoding is necessary to transform these characters into a valid ASCII format, ensuring query strings and web addresses parse correctly without data corruption.
encodeURI is meant for encoding a full, functional URL, leaving characters with special meaning in a URL (like :, /, ;, ?, and @) intact. encodeURIComponent is designed to encode a segment of a URL, such as a query parameter value, and will encode almost all special characters including path separators and query operators.
Historically, spaces in the query component of a URL are encoded as '+' (per application/x-www-form-urlencoded rules). However, %20 is the official encoding standard for spaces across all parts of a URI (RFC 3986). This tool lets you choose either style to fit your backend requirements.
No. Security and privacy are our highest priorities. All URL encoding processes run 100% locally inside your web browser. None of your input strings, credentials, or target paths are sent to external servers or logged anywhere.