URL Encoder / Decoder & Query Parser

The Complete Guide to URL Percent Encoding

Web URLs contain structural symbols (like ?, =, /, and &) that segment domains, paths, and queries. When sending payloads, text parameters, or secondary links inside query variables, those special symbols must be encoded into percent-escaped bytes (e.g. spaces turn into %20 or +) to prevent browser parsing errors. This URL tool helps you format them instantly.

Understanding encoding schemes

JavaScript and backend systems differentiate between two primary encoding functions:

• encodeURIComponent: Encodes all non-standard characters, including URL structural marks (e.g. ? $\rightarrow$ %3F, & $\rightarrow$ %26). Essential when placing a URL inside another query parameter.
• encodeURI: Encodes general character inputs but keeps structural punctuation marks untouched. Useful when escaping spaces inside a normal web path.

Interactive query parser

Pasting long URLs into system integrations can cause errors due to misspelled parameters or incorrect separators. The integrated **Query Parameter Parser** breaks down long URLs into clean key-value rows. You can delete attributes, rename keys, append parameters, and immediately copy the newly formatted URL without writing complex path strings manually.