About this tool
Validate and reformat a JSON text sample with the indentation options available. Inspect syntax errors and the parsed output before replacing the original, particularly when exact numeric representation matters.
Calculations and file processing run in this browser tab. The tool does not send working inputs or files to our hosting server.
मुख्य इनपुट और नियंत्रण हिंदी में देखने के लिए ऊपर “🇮🇳 हिंदी में देखें” चुनें। गणना और फ़ाइल प्रोसेसिंग इसी ब्राउज़र टैब में होती है; टूल आपके इनपुट हमारी होस्टिंग पर नहीं भेजता।
Features
- Work with Paste Raw JSON.
- Indentation Spaces: choose from 2 Spaces (Standard); 4 Spaces.
- Review Validation Status; Root Structure; Formatted Size in the result breakdown.
Benefits
- Make nested JSON easier to read.
- Catch a syntax problem before sending data to another application.
Who should use this tool?
- Developers inspecting a JSON payload.
- People reviewing a structured text sample.
How to use
- Complete the labelled fields for your scenario, including Paste Raw JSON. Use the units shown beside each field.
- Choose Indentation Spaces to match the situation you want to check.
- Select Calculate / Run Tool and review Valid JSON — Object (3 top-level keys) and Validation Status; Root Structure.
- Check the assumptions and limitations below. Adjust a value to compare scenarios, then copy or download the result you need.
Try these worked examples
| Scenario | Example inputs | Example result |
|---|---|---|
| Format GST e-Invoice Sample JSON (2 Spaces) | Paste Raw JSON: {"gstin":"27AAPFU0939F1ZV","invoiceNo":"INV-2026-01","items":[{"hsn":"8471","…Indentation Spaces: 2 Spaces (Standard) | { "gstin": "27AAPFU0939F1ZV", "invoiceNo": "INV-2026-01", "items": [ { "hsn": "8471", "qty": 2, "taxableValue": 50000, "igstRate": 18 } ] } |
| Format API Config Array (4 Spaces) | Paste Raw JSON: [{"id":1,"status":"active"},{"id":2,"status":"pending"}]Indentation Spaces: 4 Spaces | [ { "id": 1, "status": "active" }, { "id": 2, "status": "pending" } ] |
Reference and processing
ECMA-404 / IETF RFC 8259 JSON Data Interchange Standard · Listed applicability: 2025-2026
Calculations and file processing run in this browser tab. The tool does not send working inputs or files to our hosting server.
FAQs
Can JavaScript parsing affect very large numeric values?
JSON numbers are interpreted through the implementation’s numeric representation. Integers outside its exact range can lose precision; keep the original and use an appropriate representation for exact large values.
Which inputs do I need for JSON Formatter, Beautifier & Syntax Validator?
Use Paste Raw JSON; Indentation Spaces. The built-in examples show how those fields fit together.
What should I check before using this result?
Reports exact syntax error message if trailing commas or single quotes are present. Check the assumptions and output against your intended task before relying on the result.
What happens to the information I enter?
Calculations and file processing run in this browser tab. The tool does not send working inputs or files to our hosting server. Tool favourites save only tool IDs in this browser. Sharing sends the tool link, not your working values or files.