JSON ミニファイア
JSON をオンラインで圧縮：本番 API や設定用に空白を削除してコンパクト化、すべてブラウザ内で完結
JSON Minifier Tips
- Minified JSON is semantically identical to the input - only whitespace is removed.
- Tick "Allow comments" to minify JSONC / commented JSON from VS Code settings or tsconfig.
- The size report shows bytes before and after, plus the percentage saved.
- Paste the output into APIs, CI config, or anywhere byte size matters.
プロフェッショナルな JSON Minifier 処理機能
JSON Minifier データを効率的かつプロフェッショナルに扱うために必要なすべて
Safe Parsing
Input is parsed first, so invalid JSON is reported before anything is written.
Compact Output
The shortest valid representation of your data - one line, zero waste.
Size Report
See bytes before and after, plus the exact percentage saved.
JSONC Support
Optionally strip // and /* */ comments from VS Code-style JSONC files.
Instant Results
Native browser JSON engine - megabytes minify in milliseconds.
Private by Design
Data stays in your browser tab. Close it and everything is gone.
仕組み
JSON Minifier をプロのように処理する簡単なステップ
Paste Your JSON
Copy a JSON object, API response, or commented JSONC file into the input area.
Choose Options
Enable JSONC comment stripping if your input contains comments.
Click Minify
The JSON is validated and compacted to a single line with a size report.
Copy the Output
Copy the minified JSON into your API, pipeline, or production config.
プロフェッショナルな JSON Minifier フォーマッター＆バリデーター
JSON Minifier processing runs entirely in your browser — no uploads, no accounts, no limits.
エキスパートによる構築
The JSON Minifier formatting engine runs locally in your browser using established parsers and standard algorithms. Nothing is hidden — open your browser dev tools and watch it work.
主な技術的特徴:
- • Native JSON.parse / JSON.stringify pipeline for exact round-trip fidelity
- • Optional JSONC support strips // and /* */ comments safely, inside or outside strings
- • Byte-accurate size report with before/after comparison and savings percentage
- • Handles large files without freezing the tab
- • Pure client-side minification - your data never leaves the browser
信頼とセキュリティ
Your data stays in your browser: nothing is uploaded, stored, or logged. Close the tab and it is gone.
セキュリティとプライバシー:
- • 100% client-side minification - no server uploads, ever
- • No tracking, cookies or data logging
- • HTTPS encryption for secure connections
- • Config payloads stay on your device
- • GDPR and CCPA compliant approach
プロがEZ Formatterを選ぶ理由
Your data stays in your browser
よくある質問
Json Minifier フォーマットに関するよくある質問
Yes, completely free with no registration. All minification happens locally in your browser.
Minifying removes whitespace, line breaks and comments while keeping the data identical - no gzip is involved. Compressing usually means gzip or brotli, which the server applies afterwards.
Yes. Tick "Allow comments (JSONC)" and // as well as /* */ comments are stripped before parsing, including comments inside strings are preserved correctly.
No. JSON.stringify(JSON.parse(...)) produces the shortest standard representation of the exact same value. Number formatting follows JavaScript canonical output, e.g. 1.0 becomes 1.
It depends on how the input was formatted. Pretty-printed JSON with 4-space indentation typically shrinks 60-80%, while already-compact JSON stays almost the same size.