URL Encoder
Encode and decode URL components for safe transmission.
Runs in your browser
Your files and text are processed locally in your browser and are not uploaded.
About URL Encoder
A URL Encoder converts unsafe ASCII characters in a URL to a percent symbol followed by their two-digit hexadecimal equivalent. This ensures that parameters remain intact during HTTP GET requests and are parsed correctly by web servers.
Definition: Percent-Encoding (URL Encoding)
A mechanism for encoding information in a Uniform Resource Identifier (URI) under RFC 3986. It replaces reserved or non-ASCII characters with a '%' followed by two hexadecimal digits representing the character's ASCII value.
Inputs and Outputs
Required Inputs
- Input StringPaste the raw text or the encoded URL string you want to convert.
- Operation SelectionToggle between Encode (to percent-encode) or Decode (to resolve percent-encoded strings).
Expected Outputs
- Processed OutputThe resulting URL-safe string or the decoded plain text.
Who Uses the URL Encoder?
Query String Sanitization
Encode special characters like spaces, ampersands, and question marks inside URL parameter values.
UTM Parameter Preparation
Encode marketing campaign parameters with spaces or symbols to ensure clean tracking redirects.
API Request Construction
Prepare URL-encoded headers or request bodies for application/x-www-form-urlencoded POST requests.
Redirect URL Preparation
Safely embed a full redirect URL as a parameter inside another URL.
How to Use the URL Encoder
- 1Paste your text or URL query string into the input area.
- 2Choose the Encode option to convert text to a percent-encoded string.
- 3Choose the Decode option to translate a percent-encoded string back to plain text.
- 4Copy the resulting output to your clipboard or download it as a text file.
Quick Facts
Privacy & Security Guarantee
All URL encoding and decoding operations are executed locally in your browser. We do not transmit or store your inputs on any server.
Frequently Asked Questions
Why do URLs need to be encoded?
URLs are transmitted over HTTP using the ASCII character set. Characters outside this set (like spaces, emojis, or non-ASCII letters) and certain reserved characters (like '?' or '&') have special meanings and must be encoded to avoid parsing errors.
What is the difference between encodeURI and encodeURIComponent?
encodeURI keeps basic URL structures like protocols and domain slashes intact (e.g. 'http://'). encodeURIComponent encodes every special character, including slashes, which is required when embedding a full URL as a parameter.
Are my URL parameters or API keys safe with this tool?
Yes. Because the encoder runs entirely client-side, your input values never leave your browser, ensuring absolute security for sensitive credentials.
Does this tool support decode operations?
Yes, it fully supports decoding percent-encoded strings back into readable plain text.
How are spaces represented in encoded URLs?
Spaces can be encoded as '%20' (the standard hex code) or as a plus sign '+' depending on the URL context (like application/x-www-form-urlencoded query parameters).
Does this tool work with emojis and non-English characters?
Yes. It encodes UTF-8 multi-byte characters into percent-escaped hexadecimal representations (e.g., '😊' becomes '%F0%9F%98%8A').