About URL Encoder & Decoder
Our URL Encoder and Decoder is a free online tool for percent-encoding and decoding URLs and URL components. It supports both encodeURIComponent (for encoding individual query parameters) and encodeURI (for encoding complete URLs while preserving structural characters like ://?&=).
When to Use Each Mode
- Component mode (encodeURIComponent): Use when encoding a single query parameter value, path segment, or fragment. This encodes all reserved characters.
- Full URL mode (encodeURI): Use when encoding an entire URL. Structural characters like colons, slashes, question marks, and ampersands are preserved so the URL remains navigable.
This tool is essential for web developers working with APIs, building query strings, or handling user input in URLs. All processing is done client-side for maximum privacy.