URL Encoder & Decoder
Instantly and securely parse, encode, or decode URL strings and query parameters right in your browser. No server uploads required.
What is the Online URL Encoder & Decoder?
Our premium Online URL Encoder and Decoder is a high-speed developer utility designed to translate special characters within a string into a universally accepted URL-safe format (known as percent-encoding), and vice versa. It is built natively for the browser, meaning zero server uploads, instant processing, and 100% privacy.
Why is URL Encoding Important?
URLs can only be transmitted over the Internet using the standard ASCII character set. Because web addresses and API query strings often contain characters outside the ASCII set (such as spaces, emojis, or punctuation), these characters must be converted into a valid, safe format. URL encoding replaces unsafe characters with a % followed by two hexadecimal digits. For example:
- A space ( ) becomes
%20 - An exclamation mark (
!) becomes%21 - An ampersand (
&) becomes%26 - An equals sign (
=) becomes%3D
How to Encode or Decode URLs
- Select your Action: Toggle between "Encode URL" or "Decode URL" using the segmented control tabs at the top of the tool.
- Input Data: Type manually, paste from your clipboard, or use the "Upload" button to load a document into the left-hand workspace.
- Instant Conversion: The right-hand panel will immediately populate with your result. If you are decoding a broken string, the tool will alert you with a red border and a "Malformed URI" error message.
- Export: Click "Copy" to send the converted string to your clipboard, or click "Save" to download the result as a text file to your local machine.
Frequently Asked Questions (FAQ)
%20) so data can be passed cleanly through a web address. Decoding reverses this process, taking a URL-safe percent-encoded string and translating it back into human-readable plain text.encodeURIComponent() function. This ensures that all special characters (including ?, =, &, and /) are properly percent-encoded, making it the perfect tool for preparing query string parameters and API payloads.