비밀번호 도구

비밀번호 생성기 — 무료 온라인 도구

사용자 지정 길이와 문자 집합으로 강력한 무작위 비밀번호를 생성합니다.

브라우저에서 실행
즉시 결과 확인
100% 비공개

Length

Uppercase letters (A-Z) Lowercase letters (a-z) Numbers (0-9) Symbols (!@#$…) Exclude ambiguous characters (l, 1, I, O, 0)

자세히 알아보기

What Is a Password Generator?

A password generator creates a random string of characters that is far harder to guess than anything a person would typically choose, drawing from uppercase letters, lowercase letters, numbers and symbols in whatever combination you select.

Randomly generated passwords avoid the predictable patterns — names, dates, keyboard walks, reused words — that make human-chosen passwords vulnerable to guessing and credential-stuffing attacks, which is why security guidance consistently recommends using a generator together with a password manager.

누가 이 도구를 사용하나요?

비즈니스용

Generate a strong password for a new employee or shared service account.

개인 사용

Generate a unique, strong password for a new online account.

학생용

Generate a secure password for a school or university account.

사무실용

Generate a strong password when setting up a new system or device.

이 도구를 사용하는 이유

주요 기능

Full Character Control

Choose uppercase, lowercase, numbers and symbols independently.

Instant Generation

Generate a new password immediately, with one click.

100% Private

Generated entirely in your browser — nothing is transmitted or logged.

Ambiguous Character Exclusion

Optionally exclude easily-confused characters like l, 1, I, O and 0.

얻는 것

이점

Stronger Than Human-Chosen Passwords

Avoid predictable patterns that make passwords easy to guess.

Customizable Length & Complexity

Match the exact requirements of the account or system you're setting up.

Never Transmitted

Your new password is generated locally and never sent over the network.

단계별 안내

비밀번호 생성기 사용 방법

Set Length & Character Types

Choose a length and which character types to include.

Click Generate Password

A new random password appears instantly.

Copy and Save It

Copy the password into a password manager immediately.

사양

기술 세부 정보

항목	값
입력	Generated text output, no input required
처리	Length from 4 to 128 characters
출력	Cryptographically random using your browser's Web Crypto API

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 a Password Manager

Save generated passwords in a password manager rather than trying to memorize them.

Use at Least 16 Characters

Longer passwords are significantly harder to crack — 16 characters or more is a good default.

자주 묻는 질문

Character selection uses your browser's cryptographically secure random number generator (Web Crypto API), the same kind of randomness used for cryptographic keys.

No — the password is generated and displayed entirely in your browser and never transmitted over the network.

Longer is generally better — 16 characters or more is a reasonable default for most accounts, more for highly sensitive ones.

Only if you expect to need to type the password manually — otherwise, including them slightly increases randomness.

No — nothing is stored; copy the password into a password manager right after generating it.

Length generally contributes more to strength than complexity alone, though both matter — this tool lets you control both.