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URL Encoder Guide

About this tool

Percent-encode and decode URL components, either the whole string or one component at a time. The distinction matters more than it looks: encoding a full URL turns its own ? and & into data, which is usually not what you want.

Questions

Should I encode the whole URL or just a parameter?
Usually only the parameter value. This tool encodes its entire input as one component; it has no separate whole-URL mode. To build a URL, encode a value first, then add it after the parameter name.