비밀번호 강도 검사기 — 무료 온라인 도구
비밀번호가 얼마나 강력한지 확인하고 개선을 위한 팁을 받습니다.
- 브라우저에서 실행
- 즉시 결과 확인
- 100% 비공개
What Is a Password Strength Checker?
A password strength checker analyzes a password's length, character variety and common weaknesses — like repeated characters or being one of the most commonly used passwords — to give an at-a-glance score and specific feedback on how to make it stronger.
It is a quick way to sanity-check a password before using it, without needing to memorize security best practices — the tool tells you exactly what's missing, such as a missing symbol or insufficient length.
누가 이 도구를 사용하나요?
비즈니스용
Check that a new shared account password meets a reasonable strength bar.
개인 사용
Check whether a password you're about to reuse is actually strong.
학생용
Explore what makes a password strong or weak for a security course.
사무실용
Sanity-check a password before setting it on a new system.
주요 기능
Live Strength Score
See a strength score update as you type, character by character.
Specific Feedback
Get concrete suggestions, not just a vague strength label.
100% Private
Your password is checked entirely in your browser — never transmitted.
Instant Results
No button to click — feedback updates as you type.
이점
Know Exactly What to Fix
Get specific, actionable feedback instead of a generic pass/fail.
Checked Locally
Your password is never sent anywhere, even temporarily.
Quick Sanity Check
Verify a password's strength in seconds before using it.
비밀번호 강도 검사기 사용 방법
Type a Password
Enter the password you want to check.
Read the Strength Score
A live meter and label show how strong it is.
Apply the Suggestions
Follow the specific tips shown to improve it.
기술 세부 정보
| 항목 | 값 |
|---|---|
| 입력 | Plain text password input |
| 처리 | No practical limit |
| 출력 | Heuristic scoring based on length, character variety and known weak patterns |
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.
팁
Aim for 12+ Characters Minimum
Length is one of the strongest contributors to password strength.
Avoid Common Passwords Entirely
Even a long common password (like "password123") is easy to guess — use the Password Generator instead.