URL 인코더
인코딩 및 암호화 · 무료 온라인 도구
URL을 퍼센트 인코딩 및 디코딩.
Click "Encode" or "Decode" to transform your URL...인코딩
공백, 앰퍼샌드, 쿼리 매개변수 등 특수 문자를 안전한 URL 전송을 위해 퍼센트 인코딩합니다.
디코딩
퍼센트 인코딩된 URL을 읽기 가능한 텍스트로 변환하며, 잘못된 시퀀스에 대한 명확한 피드백을 제공합니다.
RFC 3986 안전
encodeURIComponent를 사용 — URL 구성 요소 및 쿼리 값 인코딩의 표준입니다.
URL 인코더 사용 방법
- 1Enter or paste your data into the input field.
- 2Select the desired encoding, hashing, or encryption options.
- 3Click the action button to process your data.
- 4Copy the result from the output field.
주요 기능
- ✓100% 무료 — 가입, 구독, 광고 없음
- ✓브라우저에서만 실행 — 데이터는 기기를 떠나지 않습니다
- ✓빠르고 가벼움 — 즉시 결과 확인
- ✓크로스 플랫폼 — 데스크톱, 태블릿, 모바일 지원
URL 인코더 소개
URL encoding (percent-encoding), defined by RFC 3986, converts characters that are not allowed in a URL into a % followed by two hexadecimal digits. Reserved characters (:, /, ?, #, [, ], @, !, $, &, ', (, ), *, +, ,, ;, =) and non-ASCII characters must be encoded when used outside their reserved purpose.
URL 인코더 작동 원리
Each character is encoded as UTF-8 bytes, then each byte that is not an unreserved character (A-Z, a-z, 0-9, -, _, ., ~) is converted to %XX form. Spaces are encoded as %20 in paths or + in query strings (application/x-www-form-urlencoded).
주요 활용 사례
- ✓Query parameters — pass special characters in URL search strings
- ✓OAuth callbacks — encode redirect URIs
- ✓REST API requests — encode path and query parameters
- ✓International domains — encode non-ASCII characters (IDN)
URL Encoding vs Base64
URL encoding preserves URL structure (only encoding unsafe characters) while Base64 encodes the entire input. URL encoding is reversible in-place; Base64 changes the format entirely. Use URL encoding for web addresses; use Base64 for embedding binary data in text.
보안 및 개인정보
This tool runs entirely in your browser. URL encoding does NOT provide security — it only ensures characters are transport-safe. Never use it to hide sensitive data. For secure transmission use HTTPS; for data protection use encryption.
기술 세부 정보
Standard: RFC 3986. Unreserved: A-Z a-z 0-9 - _ . ~. Reserved: : / ? # [ ] @ ! $ & ' ( ) * + , ; =. Percent-encoded: %XX (hex). Space: %20 (path) or + (query). Non-ASCII: UTF-8 bytes each encoded as %XX. JavaScript: encodeURIComponent() encodes all except A-Z a-z 0-9 - _ . ! ~ * ' ( ).
자주 묻는 질문
What is the difference between encodeURI and encodeURIComponent?
encodeURI preserves reserved URL characters (: / ? #) for full URLs. encodeURIComponent encodes everything except A-Z a-z 0-9 - _ . ! ~ * ' ( ), for use on individual query parameters.
Why is space encoded as %20 or +?
%20 is the RFC 3986 standard for paths. + is the application/x-www-form-urlencoded convention for query strings in HTML forms. Both are valid but context-dependent.
How are Chinese characters encoded in URLs?
Chinese characters are encoded as UTF-8 bytes, then each byte becomes %XX. For example, '中' (U+4E2D) becomes %E4%B8%AD (3 bytes).