← 모든 도구 / 보안

OTP 생성기

Generate TOTP authentication codes using a secret key. Free online tool for testing two-factor auth setups in your browser.

OTP 생성기 is a free online 보안 tool that works right in your browser — whatever you enter is processed locally and never sent to a server. No installation, no signup; works on both phone and desktop, ready to use instantly.

모든 보안 도구는 로컬에서 실행되며 외부로 데이터를 전송하지 않습니다. 비밀번호 생성, 해쉬 계산 등 민감한 작업이 모두 브라우저에서 완전히 이뤄집니다.

도구 로딩 중...

How to use

  1. 1 OTP 생성기 도구 페이지를 엽니다.
  2. 2 텍스트, URL 또는 데이터를 입력 영역에 붙여넣으세요.
  3. 3 작업 모드와 매개변수를 선택하세요.
  4. 4 도구를 실행하고 결과를 확인합니다.
  5. 5 결과를 복사하거나 다운로드하세요.

Why we built this tool

When testing security tools, sending sensitive data like passwords or tokens to a remote server defeats the purpose. We built this tool to run entirely in your browser using the Web Crypto API — your data never leaves your device.

About OTP 생성기: what you should know

DevOps engineers and security-conscious developers who rotate secrets and verify integrity as part of their daily workflow. Whether you are checking a file checksum, generating an API key, or validating a token, doing it locally avoids sending sensitive data through an external service.

Key features

  • No Server, No Storage — Every operation runs entirely in your browser. Secrets, hashes, and tokens are never transmitted or logged by any third-party service.
  • Batch-Friendly Workflow — Process multiple inputs at once when you need more than one value. Each result is independent so you can copy what you need without confusion.
  • Configurable Parameters — Adjust length, algorithm, or character set on the fly to match your specific requirements. Whether you need a short token or a long hash, the tool adapts.

Common use cases

  • Rotating Secrets After a Breach — When a key or password may have been exposed, generate a fresh replacement here and update your configs — all without exposing the new value to a third party.
  • Building Lookup Tables for Testing — Generate a batch of hashes or tokens to populate a test database. Each value is independent, so tests do not interfere with each other.

자주 묻는 질문

이 도구는 무료인가요?

네, 가입 없이 완전 무료입니다.

모바일에서 사용할 수 있나요?

네, 모바일 브라우저에서 터치를 지원합니다.

어떤 카테고리에 속하나요?

보안

검사 도구는 안전한가요?

완전히 안전합니다. 모든 검사는 브라우저에서 로컬로 실행되며 외부로 요청이나 데이터를 보내지 않습니다.

What hash algorithms are supported for checksum generation?

ToolPure supports MD5, SHA-1, SHA-256, SHA-384, and SHA-512 hash algorithms. All hashing is performed locally using the Web Crypto API, ensuring your data never leaves your browser.

Can I generate and validate JWT tokens?

Yes, you can decode JWT tokens to inspect header and payload, and generate new JWT tokens with custom claims. The tool supports HS256, HS384, and HS512 signing algorithms.

Are password generation tools truly random?

Yes, password generation uses the Web Crypto API getRandomValues() function, which provides cryptographically secure random numbers. Generated passwords are not stored or transmitted anywhere.

Is OTP 생성기 safe? Is my data uploaded or stored?

Yes. OTP 생성기 is a pure front-end tool: whatever you type or paste is processed only in your browser's memory and never sent to a server. It disappears as soon as you refresh or close the page.

🔒 Privacy & Security：All processing happens locally in your browser. Files are never uploaded or stored.

🔒 Privacy: All processing happens locally in your browser. Your files and data never leave your device — no upload, no server, no tracking.

관련 도구

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