JSON 검증기 — 무료 온라인 도구
JSON 블록이 유효한지, 유효하지 않다면 그 이유를 확인합니다.
- 브라우저에서 실행
- 즉시 결과 확인
- 100% 비공개
What Is a JSON Validator?
A JSON validator checks whether a block of text is syntactically valid JSON — correctly matched brackets and quotes, properly comma-separated values, no trailing commas — and reports exactly what's wrong if it isn't.
It's the fastest way to confirm a hand-edited config file or a suspicious API response is actually parseable, before spending time debugging code that assumes it is.
누가 이 도구를 사용하나요?
비즈니스용
Confirm an API response or webhook payload is valid before integrating it.
개인 사용
Check a hand-edited config file for typos.
학생용
Learn what makes JSON valid or invalid for a course assignment.
사무실용
Validate a data export before importing it into another system.
주요 기능
Clear Pass/Fail Result
Instantly see whether your JSON is valid.
Root Type & Size
See the root type (object/array) and its size at a glance.
Instant Validation
Results update immediately as you paste or edit.
100% Private
Your data is never uploaded — validation happens entirely in your browser.
이점
Pinpoint Errors Fast
Get a specific error message instead of guessing what's wrong.
Quick Sanity Check
Confirm valid JSON before pasting it into code or a config file.
Nothing Uploaded
Safe for sensitive data, since nothing leaves your browser.
JSON 검증기 사용 방법
Paste Your JSON
Add the JSON you want to check.
Read the Result
See instantly whether it's valid, with details if not.
Fix and Re-Check
Correct any reported issue and check again.
기술 세부 정보
| 항목 | 값 |
|---|---|
| 입력 | Any text, checked against strict JSON syntax rules |
| 처리 | No practical limit — handled entirely by your browser |
| 출력 | Uses the native JSON parser for spec-accurate validation |
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
Watch for Trailing Commas
A trailing comma after the last item in an object or array is a common cause of invalid JSON.
Use Double Quotes Only
JSON requires double quotes for strings and keys — single quotes are invalid.