비밀번호 생성기 — 무료 온라인 도구
즉시 사용, 무료, 회원가입 불필요. 파일은 로컬에서 처리되며 업로드되지 않습니다.
By the AllFileBox Team · Last updated: 2026-06-27
Password Generator is a free online tool that creates strong, random passwords in your browser using your chosen length and character types, with everything generated locally and never transmitted.
What makes a password strong
Strength comes from length and unpredictability. A long password drawn from a large mix of character types has so many possible combinations that guessing it becomes impractical. Mixing uppercase, lowercase, numbers, and symbols across at least 12 to 16 characters is the practical baseline today, and longer is always better for accounts that matter.
Randomness matters
A password is only strong if it is truly random, because patterns and dictionary words are the first things attackers try. This generator uses the browser's cryptographically secure random source rather than a predictable formula, so each password is genuinely unpredictable. That is the difference between a password that resists attack and one that merely looks complex.
Use a unique password everywhere
Reusing one password means a single breach exposes every account that shares it. Generating a unique password for each service contains the damage of any leak. Because remembering dozens of random strings is impossible, pair this generator with a password manager that stores them, so you only memorize one strong master password.
Private and local
Password Generator runs entirely in your browser. Each password is created locally using secure randomness and is never uploaded, stored, or logged, so it exists only on your screen until you copy it. No server ever sees the password, and closing the tab clears it from memory.
사용 방법 비밀번호 생성기
- Open the Password Generator tool.
- Choose the password length you want.
- Select which character types to include.
- Generate the random password in your browser.
- Copy the password into your password manager.
Secure a new account
Secure a new account
Generate a long random password for a sign-up and save it straight into your password manager.
Replace a weak password
Create a strong unique string to replace a reused or guessable password on an important account.
Make a one-off secret
Produce a random value to use as an API key placeholder or a temporary shared secret.
| Length | Character mix | Strength |
|---|---|---|
| 8 characters | Letters only | Weak |
| 12 characters | Mixed types | Good |
| 16+ characters | Mixed types | Strong |
관련 도구
주요 기능 비밀번호 생성기
파일은 비공개로 유지됩니다
모든 처리는 브라우저에서 이루어집니다. 파일은 서버로 전송되지 않습니다.