What Is Double URL Encoding?
How `%2520`, `%252F`, and `%253D` happen, how to diagnose them, and when to encode or decode only once.
Notes & guides.
BLOG
How Do I Decode Query Parameters Safely?
A debugging guide for reading query strings while preserving `%26`, `%3D`, plus signs, and encoded redirect URLs.
Why Does an Ampersand Break My Query String?
How ampersands, equals signs, and question marks change query strings — and how URL encoding keeps values intact.
Should I Use `encodeURI` or `encodeURIComponent`?
A practical decision guide for JavaScript URL encoding, query values, complete URLs, and broken ampersands.
Should Spaces in URLs Be `%20` or `+`?
A focused explanation of when spaces become `%20`, when they become plus signs, and why literal plus signs need care.
How Do I Decode a URL?
A plain-English guide to decoding percent-encoded links, query strings, and tracking URLs without losing meaning.
What URL Encoding Actually Does
A practical answer to what URL encoding means, when to use it, and how percent-encoded text keeps links from breaking.