Pemformat & Validator JSON

Percantik, format, dan validasi data JSON Anda secara instan. Alat online gratis kami membantu Anda men-debug JSON dengan membuatnya dapat dibaca. 100% pribadi dan berjalan di browser Anda.

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Format dan validasi JSON tanpa mengunggah data Anda

Beautify, minify, and validate JSON instantly — right in your browser. No uploads, no sign-up, no limits.

100% pribadi
Instant formatting
Gratis selamanya

Cara menggunakan

  1. 1

    Tempelkan JSON Anda

    Salin dan tempel data JSON mentah Anda yang belum diformat ke dalam area teks 'Input JSON'.

  2. 2

    Format & Validasi

    Klik tombol 'Format / Validasi'. Alat akan langsung memproses data.

  3. 3

    Tinjau Output

    Jika JSON Anda valid, itu akan muncul dalam format yang indah. Jika ada kesalahan, pesan kesalahan yang terperinci akan ditampilkan.

  4. 4

    Salin atau Unduh

    Klik 'Salin Hasil' untuk menyalin JSON yang diformat ke clipboard Anda, atau gunakan tombol unduh untuk menyimpannya sebagai file .json.

Kuat, Sederhana & Aman

Pemformatan Instan

Ubah JSON satu baris yang berantakan menjadi format yang rapi, terindentasi, dan mudah dibaca dengan sekali klik.

Penyorotan Kesalahan

Temukan kesalahan sintaks dengan cepat. Validator kami menunjukkan dengan tepat apa yang salah, menghemat waktu debugging Anda yang berharga.

100% Pribadi

Data Anda tidak pernah meninggalkan mesin Anda. Semua pemrosesan terjadi secara lokal di browser Anda, menjamin kerahasiaan total.

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Understanding JSON Formatting

What is JSON and why format it?

JSON (JavaScript Object Notation) is a lightweight data-interchange format that has become the de facto standard for APIs, configuration files, and data storage. It uses human-readable text to represent objects, arrays, numbers, strings, booleans, and null values. While JSON is designed to be easy for humans to read and write, many JSON payloads are transmitted in minified form (no whitespace) to save bandwidth, making them difficult to inspect.

A JSON formatter (also called a beautifier or pretty-printer) takes minified or poorly formatted JSON and adds consistent indentation, line breaks, and spacing so that the structure is immediately visible. For example, a single-line JSON string like `{"name":"John","address":{"city":"NYC","zip":"10001"}}` becomes a multi-line, indented structure where the nesting of objects and arrays is clear at a glance.

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Common JSON errors and how to fix them

JSON has a strict syntax defined by RFC 8259. The most common errors are: using single quotes instead of double quotes for strings, trailing commas after the last element in an array or object, unquoted property names, and unescaped special characters in strings. Our validator detects all of these and reports the exact line and column where the error occurs.

Another common issue is mixing JSON with JavaScript. JSON is not JavaScript — it does not support comments (// or /* */), it does not support single-quoted strings, and it does not support trailing commas. If your JSON works in JavaScript but fails in a strict parser, it's likely because it contains one of these JavaScript-specific extensions.

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Mengapa Memformat JSON?

Keterbacaan

Pahami dengan cepat struktur respons API atau file konfigurasi.

Debugging

Temukan koma yang hilang, kurung yang tidak cocok, atau kesalahan sintaks umum lainnya dengan mudah.

Berbagi

Bagikan data JSON dengan rekan kerja dalam format yang bersih dan profesional.

Bagaimana ini dibandingkan dengan formatter JSON lain?

A side-by-side comparison of popular JSON formatting tools.

FiturNovaToolsJSONFormatter.orgJSONLintVS Code
Privasi (tanpa unggah)100% lokalUnggah ke serverUnggah ke serverLokal
HargaGratis tanpa batasGratis dengan iklanGratis dengan iklanFree
Pendaftaran diperlukanTidakTidakTidakN/A
Penyorotan kesalahanLine + columnOn save
Tampilan pohon
Mode minifikasi
Ramah mobileTerbatas
Berfungsi offlineSetelah halaman dimuat

Online formatters like JSONFormatter.org and JSONLint upload your JSON to their servers. Our tool processes everything locally — your data never leaves your browser.

JSON Syntax Quick Reference

A quick guide to JSON data types and syntax rules.

Data Types

string

Teks dibungkus dalam tanda kutip ganda. Tanda kutip tunggal tidak valid.

Contoh:"hello world"
number

Bilangan bulat atau titik mengambang. Tidak perlu tanda kutip.

Contoh:42 or 3.14
boolean

true or false (lowercase, no quotes).

Contoh:true
null

Represents absence of value (lowercase, no quotes).

Contoh:null
object

Key-value pairs wrapped in curly braces.

Contoh:{"key": "value"}
array

Ordered list wrapped in square brackets.

Contoh:[1, 2, 3]

Common Syntax Rules

"key":

Nama properti harus dibungkus dalam tanda kutip ganda.

Contoh:"name": "John"
,

Koma memisahkan elemen. Koma di akhir tidak diizinkan.

Contoh:[1, 2, 3] (not [1, 2, 3,])
\"

Escape tanda kutip ganda di dalam string dengan backslash.

Contoh:"He said \"hi\""
\\

Escape backslash itu sendiri dengan backslash lain.

Contoh:"C:\\Users"
\n

Newline character in strings.

Contoh:"Line1\nLine2"

Pertanyaan yang sering diajukan

Apakah data saya aman dengan alat ini?
Ya, data Anda 100% aman. Alat ini melakukan semua pemformatan dan validasi langsung di browser Anda menggunakan JavaScript. Data JSON Anda tidak pernah dikirim ke server kami, menjamin privasi dan keamanan total.
Apa artinya 'memvalidasi' JSON?
Validasi adalah proses memeriksa apakah data JSON Anda mematuhi aturan sintaks yang benar. Ini termasuk memeriksa hal-hal seperti kurung kurawal {} dan kurung siku [] yang cocok, dan penggunaan tanda kutip yang benar. Alat kami memvalidasi JSON Anda secara otomatis.
Bisakah alat ini menangani file JSON yang besar?
Ya, alat ini dirancang untuk menangani file JSON yang besar secara efisien. Karena semua pemrosesan dilakukan di mesin lokal Anda, kinerjanya akan tergantung pada kekuatan pemrosesan dan memori yang tersedia di komputer Anda.
Apakah data saya aman dengan alat ini?
Yes, your data is 100% safe. This tool performs all formatting and validation directly in your browser using JavaScript. Your JSON data is never sent to our servers, never stored in any database, and never logged. You can verify this by opening your browser's DevTools Network tab — no network requests are made when you format JSON. This makes the tool safe to use with API keys, credentials, customer data, and other sensitive information embedded in your JSON.
Apa arti 'memvalidasi' JSON?
Validation is the process of checking if your JSON data adheres to the correct syntax rules defined by RFC 8259. This includes checking for matching curly braces {}, matching square brackets [], correct quoting of strings with double quotes (not single quotes), proper comma placement between elements, and ensuring that numbers, booleans, and null values are written correctly. Our tool validates your JSON automatically as you paste it and highlights the exact location of any syntax error.
Bisakah alat ini menangani file JSON besar?
Yes. The tool is designed to handle large JSON files efficiently using a streaming parser. Since all processing is done on your local machine, performance depends on your computer's processing power and available memory. Files up to 5-10 MB typically format instantly. For files larger than 50 MB, you may notice a brief delay (1-3 seconds) while the parser processes the data. Very large files (100+ MB) may cause the browser tab to become temporarily unresponsive.
Apa perbedaan antara JSON dan JSONL?
JSON (JavaScript Object Notation) is a single data structure — either an object or an array — that represents the entire document. JSONL (JSON Lines) is a format where each line is a separate, independent JSON object, commonly used for log files and data pipelines. Our formatter expects standard JSON, not JSONL. If you paste JSONL, the validator will report an error because multiple top-level JSON values are not valid in a single JSON document.
Bagaimana cara memperbaiki kesalahan 'Unexpected token'?
This error occurs when the JSON parser encounters a character it does not expect. The most common causes are: (1) using single quotes instead of double quotes for strings, (2) trailing commas after the last element in an array or object, (3) unquoted property names, (4) comments (JSON does not support comments — use JSON5 or JSONC if you need them), and (5) special characters in strings that are not properly escaped. Our tool highlights the exact character position of the error so you can find and fix it quickly.
Bisakah saya memperkecil JSON dengan alat ini?
Yes. After formatting, you can click the 'Minify' button to compress the JSON back to a single line with no whitespace. This is useful for reducing the size of JSON payloads sent over the network. Minified JSON is typically 20-40% smaller than pretty-printed JSON because it removes all unnecessary whitespace, newlines, and indentation. The minified output is still valid JSON and can be re-formatted at any time.
Apakah alat ini mendukung JSON dengan komentar (JSONC)?
No. Standard JSON (RFC 8259) does not support comments. If your JSON contains comments (lines starting with // or blocks wrapped in /* */), the validator will report a syntax error. JSONC and JSON5 are extended formats that do support comments, but they are not standard JSON. If you need to add notes to your JSON, consider using a separate documentation file or a format like YAML that natively supports comments.
Bagaimana ini berbeda dari formatter JSON VS Code?
VS Code's built-in formatter works great for local files but requires opening an editor and creating a file. Our tool is instant — paste your JSON and it's formatted immediately in any browser, with no installation, no file creation, and no setup. Our tool also provides explicit validation error messages with line and column numbers, which VS Code only shows on save. Additionally, our tool works on mobile devices where VS Code is not available.
Bisakah saya menggunakan alat ini untuk proyek komersial?
Ya. Alat ini gratis untuk penggunaan pribadi dan komersial tanpa watermark, tanpa atribusi yang diperlukan, dan tanpa batasan penggunaan. Anda mempertahankan kepemilikan penuh atas gambar yang diproses. Model AI yang mendasari (MediaPipe) dilisensikan oleh Google untuk penggunaan komersial. Tidak ada pendaftaran, tidak ada API key, dan tidak ada langganan yang diperlukan.
Apa yang ditampilkan oleh 'tampilan pohon'?
The tree view renders your JSON as an expandable, collapsible hierarchy, allowing you to navigate nested objects and arrays visually. This is especially useful for large, deeply nested JSON structures where the raw text is hard to scan. You can click the expand/collapse arrows to show or hide sections, and the tree view highlights the path to the currently selected node, making it easy to understand the structure of complex API responses.

Privasi Anda Adalah Prioritas Kami

Alat ini berjalan sepenuhnya di browser Anda. File Anda tidak diunggah ke server, tidak disimpan, dan tidak dianalisis.

  • Kami tidak mengunggah, menyimpan, atau menganalisis file Anda.
  • Semua yang Anda proses tetap di perangkat Anda.
  • Tidak ada pemrosesan sisi server, penyimpanan cloud, atau analisis.

Bahkan jika koneksi internet Anda terputus, file Anda tetap aman.

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