URL Encoder

What Is a URL Encoder?

A URL Encoder converts characters in text or URLs into a representation suitable for use in a web address. This process is commonly called URL encoding or percent-encoding because encoded characters are represented using a percent sign followed by hexadecimal values.

URL encoding is particularly useful when a URL contains spaces, Unicode characters or reserved characters that have a special meaning within a URL. It is also commonly used when constructing query strings, passing values to web applications and working with APIs.

Why Use This URL Encoder?

This free online URL Encoder provides a quick way to encode URLs, text and individual URL components without installing additional software. Processing takes place directly in your browser.

How to Use the URL Encoder

Encoding a URL or URL component takes only a few steps.

1. Enter your text or URL — Paste the URL, text or parameter value that you want to encode into the input field.
2. Choose the encoding mode — Leave the URL component option disabled when working with a complete URL. Enable it when encoding an individual URL component such as a query parameter value.
3. Encode the data — Select Encode URL to convert the applicable characters into percent-encoded form.
4. Copy the result — Review the encoded output and select Copy Result to copy it to your clipboard.

Encode URLs Online

URL encoding is an important part of web development because URLs have defined rules for representing characters. Some characters can appear directly in a URL, while others need to be percent-encoded to ensure that their intended value is represented correctly.

For example, a space can be represented using %20. A Unicode character may also be represented by its UTF-8 byte sequence followed by the corresponding percent-encoded hexadecimal values. This allows text containing characters outside the basic URL character set to be transmitted reliably.

URL Encoding vs URL Component Encoding

A complete URL and an individual URL component should not always be encoded in the same way. A complete URL contains structural characters such as the scheme separator, path separators and query delimiters. Encoding an individual parameter value is different because characters that have structural meaning in a URL may need to be encoded within that value.

When to Use URL Encoding

URL encoding is commonly used when constructing links containing user-supplied values, creating API requests, preparing query parameters, handling redirects and processing web form data. It can help ensure that special characters are interpreted as data rather than being mistaken for part of the URL structure.

URL Encoding Information

URL encoding is also known as percent-encoding. An encoded character is represented by a percent sign followed by two hexadecimal digits corresponding to the character's encoded byte value. Modern URL processing commonly uses UTF-8 for representing Unicode characters before percent-encoding their bytes.

When encoding a complete URL, it is important to preserve the characters that define the URL's structure. When encoding a query parameter or other individual component, component encoding is generally more appropriate because reserved characters inside the value should not accidentally become URL delimiters.

URL encoding is not encryption. It does not provide security or confidentiality, and encoded information can be decoded easily. Do not rely on URL encoding to protect passwords, authentication tokens or other sensitive information.

Frequently Asked Questions