URL Encoder & Decoder - Online URL Tool
Encode and decode URLs online. Free URL converter for percent encoding, query parameters, and URL components.
Keywords
URL encoder, URL decoder, percent encoding, URL escape, query string encoder, URI converter
A URL encoder/decoder converts between human‑readable text and percent‑encoded forms so reserved characters travel safely in query strings and paths. Use this tool to debug redirects, normalize query parameters, and prepare values for APIs and OAuth callbacks without double‑encoding.
What is URL encoding?
URLs can safely carry only a subset of ASCII. Characters like spaces, quotes, and non‑ASCII glyphs must be percent‑encoded as %HH hex bytes. For example, space becomes %20, ü in UTF‑8 becomes %C3%BC. Decoding reverses this for display.
How to use it
Paste a string or query component to encode or decode it. The converter uses UTF‑8 and preserves reserved characters appropriately so your output matches browser and server implementations. It’s ideal for building canonical query strings, sanitizing logs, and fixing broken redirects.
About the URL Converter
Use this utility to debug redirects, build query strings, and sanitize logs before sharing. Accurate encoding prevents subtle bugs and security issues caused by ambiguous characters.
Correct URL handling is foundational for web reliability and security. Use this page to verify edge cases and standardize behavior across services.
URLコンバーター
安全なWeb送信のためにURLとテキストをエンコードします
コンポーネントエンコーディング：URLパラメーターの特殊文字をエンコード（最も一般的）
完全なURIエンコーディング：URISで許可されていない文字のみをエンコードします（URL構造を保存）
入力テキスト/url
URLエンコード出力
URLエンコードされたデータがここに表示されます