인코딩 도구

Base64 인코더 — 무료 온라인 도구

브라우저에서 즉시 텍스트를 Base64 형식으로 인코딩합니다.

브라우저에서 실행
즉시 결과 확인
100% 비공개

Your Text

URL-safe output (- and _ instead of + and /)

자세히 알아보기

What Is Base64 Encoding?

Base64 is a way of representing binary or text data using only 64 printable characters (A-Z, a-z, 0-9, + and /), which makes it safe to embed inside places that only handle plain text — such as JSON payloads, URLs, email attachments and configuration files.

This tool encodes any text you enter into its Base64 representation instantly, with an optional URL-safe variant that swaps + and / for - and _ so the result can be used directly inside a URL without further escaping.

누가 이 도구를 사용하나요?

비즈니스용

Embed small text payloads inside a JSON API request or config value.

개인 사용

Encode a short message so it isn't immediately readable at a glance.

학생용

Learn how Base64 encoding works for a networking or web development course.

사무실용

Encode a value for a data-URI or a system that requires Base64-formatted input.

이 도구를 사용하는 이유

주요 기능

Standard & URL-Safe Output

Choose standard Base64 or a URL-safe variant with one checkbox.

Instant Encoding

Output updates immediately as you type.

100% Private

Your text is never uploaded or stored.

One-Click Copy

Copy the encoded result straight to your clipboard.

얻는 것

이점

Safe for Text-Only Contexts

Encode data so it survives systems that only accept plain ASCII text.

URL-Safe Option Built In

Skip a separate step to make Base64 output safe for URLs.

No Software Needed

Encode directly in the browser — no command line required.

단계별 안내

Base64 인코더 사용 방법

Type or Paste Text

Add the text you want to encode.

Choose Standard or URL-Safe

Toggle the URL-safe option if needed.

Copy the Encoded Result

Use the Copy button to grab the Base64 string.

사양

기술 세부 정보

항목	값
입력	Plain text, encoded as UTF-8 before Base64 conversion
처리	No practical limit — handled entirely by your browser
출력	Standard Base64 (RFC 4648), with an optional URL-safe variant

직접 확인할 수 있습니다

개인정보 보호 및 보안

이 도구를 사용할 때 파일에 실제로 어떤 일이 일어나는지 알아보세요.

100% Client-Side

This tool runs entirely inside your browser using JavaScript — nothing you type or generate is ever sent anywhere.

No Upload, Ever

There is no file upload and no server processing step — your data never leaves your device.

Works Offline

Once this page has loaded, the tool keeps working even without an internet connection.

Nothing Stored

Nothing you enter is saved on our servers — refreshing the page clears everything.

No Tracking of Your Input

We have no way to see what you type, generate or convert with this tool.

더 나은 결과 얻기

팁

Use URL-Safe for Query Parameters

Enable URL-safe output when embedding the result directly in a URL.

Pair with the Decoder

Use the Base64 Decoder tool to reverse the process and check your work.

자주 묻는 질문

No — Base64 is a reversible encoding, not encryption. Anyone can decode it back to the original text; it provides no security.

URL-safe Base64 replaces + with - and / with _, and omits padding, so the result can be used directly inside a URL.

Yes — text is first converted to UTF-8 bytes, so accented characters and other scripts encode and decode correctly.

No — encoding happens entirely in your browser using the built-in btoa() function.

Those are standard Base64 padding characters, added to make the output length a multiple of 4 — the URL-safe option removes them.

This tool is designed for text input; for encoding files, a dedicated file-to-Base64 tool would be needed.