Turn a one-line response into something you can inspect
Useful when you need to confirm fields, nested objects, arrays, and unexpected values quickly.
Readable structure is usually the fastest way to spot field-level mistakes in API data.
Paste JSON to beautify, minify, validate, escape, or unescape it instantly. Everything runs locally in your browser.
JSON 포맷팅 시작
왼쪽에 JSON을 입력하거나 Import로 파일에서 불러오세요.
A reliable formatter workflow is simple: paste the raw payload, choose whether you need readable or compact output, review parse errors if any, then copy, download, or continue into repair, table editing, or schema generation.
From one-line payload to readable structure
A lot of real payloads come from logs, APIs, and queues as a single unreadable line. The formatter turns that into something you can inspect in seconds.
Use pretty output for review and debugging. Switch to minified output only when you need compact transport or storage.
These are the common cases where formatting pays off immediately during real development work.
Useful when you need to confirm fields, nested objects, arrays, and unexpected values quickly.
Readable structure is usually the fastest way to spot field-level mistakes in API data.
Stable key order makes diffs cleaner and reduces noise when reviewing configuration changes.
Sorting is useful when your real goal is comparison rather than human-friendly business ordering.
Logs and message systems often store JSON inside strings. Unescape it first, then keep working on the actual structure.
If the payload is full of backslashes, unescaping is usually the first useful step.
Tutorial Step
1단계 – JSON을 온라인 포매터에 붙여넣거나 가져오기
Start with the original payload. You do not need to clean up spacing or line breaks first.
Tutorial Step
2단계 – 포맷 옵션 선택
Readable JSON and compact JSON solve different problems. Pick the mode that matches what you need next.
Tutorial Step
3단계 – 결과와 오류 확인
The output area is both a result view and a fast feedback loop. Valid JSON renders immediately; invalid JSON shows an actionable error.
Tutorial Step
4단계 – API/응답/로그용으로 복사 또는 다운로드
Once the JSON is clean, use it as the working copy for the next step instead of repeating the cleanup elsewhere.
A common formatter workflow
Paste the raw payload into the formatter and expand it into readable JSON first.
If the parser fails, jump to the error or move the payload into Repair.
Once the structure is valid, choose beautified, minified, escaped, or unescaped output based on the next task.
Apply the output back to input if the cleaned result should become your new working copy.
Continue into the table editor, compare tool, or schema generator when formatting is no longer the bottleneck.
Putting the formatter at the front of the workflow usually saves time later because every downstream tool receives cleaner JSON.
초보자를 위한 빠른 팁
JSON 문법을 확인하고, 포맷하거나 API로 보내기 전에 오류 위치를 빠르게 찾습니다.
따옴표 누락, 끝 쉼표, 괄호 불일치 같은 흔한 JSON 문제를 자동으로 수정합니다.
Convert clean JSON into a spreadsheet with nested-field flattening and live preview.
Compare two JSON payloads side by side and highlight additions, deletions, and edits.
JSON 데이터를 스프레드시트와 같은 인터페이스에서 시각적으로 편집하고 실시간으로 업데이트합니다.
검증과 문서화를 위해 JSON에서 JSON Schema 정의를 생성합니다.
JSON 포맷팅은 적절한 들여쓰기, 줄바꿈, 공백을 추가해 JSON 데이터를 더 읽기 쉽고 이해하기 쉽게 만듭니다.
네. 2칸, 4칸 또는 압축 출력(minified)을 선택할 수 있습니다.
아니요. 포맷팅은 표시 형식만 바꾸며, 구조와 값은 그대로 유지됩니다.
네. 큰 JSON도 효율적으로 처리하지만, 아주 큰 파일은 처리에 잠시 시간이 걸릴 수 있습니다.
Formatting focuses on readability, while validation focuses on syntax correctness. This page does both in one flow.
No. Formatting, validation, escaping, and unescaping all run locally in your browser.