URL encoding (also called percent-encoding) converts special characters like spaces, ampersands, and non-ASCII characters into a format that is safe to include in URLs. For example, a space becomes %20 and & becomes %26.
Use URL encoding when constructing URLs with query parameters that contain special characters, when you need to safely transmit data in a URL, or when debugging malformed URLs. Decode when you need to read percent-encoded URLs in human-readable form.
Yes. All encoding/decoding happens in your browser. URLs or text you enter are never transmitted to any server. ToolsStack tools are designed to be completely client-side for maximum privacy.