Characters encoded by encodeURIComponent()

⚠ Browser differences

List of all characters that when passed through encodeURIComponent(), will be percent-encoded

Fuzzer

Created Jul 4, 2025

Updated Aug 7, 2026

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CategoryJavaScript Syntax

VisibilityPublic

TypeJS

CharsetUTF-8

Template used:

const s = String.fromCodePoint(i);0x0D
if (encodeURIComponent(s).includes("%")) log(i);

Sample payloads

const s = String.fromCodePoint(i);0x0D
if (encodeURIComponent(s).includes("%")) alert(i);