Free Web Tool Suite

URL Encoder DecoderFREE TOOL (NO LOGIN REQUIRED)

Encode special characters into percent-encoded URL formats or decode encoded query strings.

SEO KNOWLEDGE BASE & GUIDE

URL Encoding & Percent-Encoding Guide for Web Developers

Safely format query parameters, special characters, and non-ASCII symbols for URI standards.

Technical Overview & Core Purpose

URL encoding replaces unsafe ASCII characters with a `%` followed by two hexadecimal digits. Proper percent-encoding prevents query string truncation and broken HTTP requests when passing spaces, ampersands, or Unicode characters.

Key Benefits & Use Cases

  • Convert spaces to %20 and special characters to valid URI strings.
  • Decode complex tracking parameters and query strings instantly.
  • Ensure cross-browser URL compatibility.

Frequently Asked Questions (FAQ)

Q: Why do spaces become %20 or + in URLs?A: %20 is standard URI percent-encoding, while '+' is used in application/x-www-form-urlencoded query strings.