Developer Tools
URL Encoder Decoder
Encode or decode URLs instantly. Safely convert query parameters, special characters, and percent-encoded strings directly in your browser.
About Our URL Encoder Decoder
Why URL Encoding and Decoding Matters
URLs can only contain a limited set of characters from the US-ASCII character set. When a URL contains special characters, spaces, or non-ASCII data, these characters must be converted into a universally accepted format known as percent-encoding. For example, a space becomes %20, and an ampersand becomes %26. URL encoding ensures that web browsers, servers, and APIs can transmit web addresses and form data reliably without breaking the query structure.
Secure, Local Browser-Based Processing
Your data security is paramount when working with sensitive API endpoints, tracking links, or user tokens. This URL encoder decoder tool runs entirely client-side in your web browser. No data is sent to our servers, and no inputs are logged or stored. Because all conversions happen locally on your device, you can safely encode and decode internal development URLs, query strings, and parameters without exposing sensitive information.
How it works
How It Works
Input your text
Paste the URL, query parameter, or text string you need to convert into the input field.
Select the operation
Choose whether you want to encode standard characters into percent-encoded format, or decode percent-encoded strings back into readable text.
Copy the result
The converted output is generated instantly. Copy the resulting string directly to your clipboard for use in your code, browser, or API client.
Practical use cases
Practical Use Cases
Debugging API Requests
Software developers often need to inspect raw API requests. Decoding query parameters helps identify malformed JSON strings, auth tokens, or tracking variables passed in the URL.
Preparing Marketing Tracking Links
Digital marketers manually building UTM parameters can encode special characters in campaign names to ensure tracking URLs resolve correctly across different browsers and social platforms.
Configuring Redirect Rules
System administrators setting up Nginx, Apache, or serverless redirect rules use URL encoding to safely format target destination paths containing query strings or special characters.
FAQ
Frequently Asked Questions
Percent-encoding, also known as URL encoding, is a mechanism to translate special characters in a URI into a safe ASCII format. It replaces unsafe characters with a '%' followed by two hexadecimal digits representing the character's ASCII value.
In standard URL path encoding (RFC 3986), spaces are encoded as %20. However, when formatting application/x-www-form-urlencoded query data (commonly used in HTML form submissions), spaces may be encoded as a plus sign (+). Our tool handles standard percent-encoding to ensure compatibility across web applications.
Yes. Because this tool runs entirely in your local browser using JavaScript, your input data never leaves your computer. There are no server uploads, network requests, or backend databases storing your queries.
Characters like ?, &, =, /, :, and # have special meanings in URLs (defining paths, queries, and fragments). If these characters are part of the actual data rather than the URL structure, they must be encoded to prevent parsing errors.
Yes, our encoder fully supports UTF-8 characters. Multi-byte characters (like emojis or non-Latin alphabets) are correctly encoded into their corresponding percent-encoded byte sequences.