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Finance Create simple invoices for freelance work, services, and small businesses. Developer Format and validate JSON online with a clean, free developer-friendly interface. Developer Decode JWT headers, payloads, and signatures to inspect authentication tokens safely. SEO Check keyword density in content to improve SEO relevance and readability. Finance Estimate loan EMIs, total interest, and repayment totals for better budgeting. Finance Convert between land measurement units like aana, ropani, bigha, kattha, and square feet. Web Tools Create HTML search engine meta tags (title, description, keywords, robots) for your pages. SEO Preview Open Graph tags and social share cards for Facebook, LinkedIn, and X. Finance Estimate salary, deductions, and take-home pay for payroll planning. Finance Calculate profit, margin, and markup percentages for pricing and business planning. QR & Barcode Generate custom QR codes for URLs, text, and simple messages with styling choices. QR & Barcode Scan and decode QR codes instantly using your camera or by uploading an image. QR & Barcode Generate WiFi QR codes to share network names and passwords securely. QR & Barcode Generate QR codes to initiate emails with pre-filled subject and body. QR & Barcode Generate QR codes to send pre-defined text messages to specific phone numbers. QR & Barcode Generate contact information vCard QR codes for quick scans. QR & Barcode Generate standard barcodes including CODE128, CODE39, EAN-13, and UPC. QR & Barcode Scan and read barcodes from images or live camera streams in your browser. Developer Test regular expressions against sample text and inspect matching results instantly. Web Tools Generate standard robots.txt files with crawl directives and sitemap locations. Web Tools Generate clean, valid XML sitemaps from a list of page URLs for search engines. Text Tools Generate clean, SEO-friendly URL slugs from titles, names, and phrases. Creative Create short, catchy thumbnail text ideas for YouTube and digital content. Marketing Create campaign URLs with UTM parameters for analytics and marketing tracking. Developer Generate version 4 UUIDs for databases, APIs, and system identifiers. Creative Create catchy YouTube title ideas for videos, tutorials, and channel content. Security Generate secure, random passwords with customizable length, symbols, and character sets client-side. Security Generate custom API keys with custom prefixes, lengths, and secure random byte formats. Security Generate secure random CSRF tokens for web forms and API endpoints. Security Generate cryptographically secure random tokens for sessions, passwords, and identifiers. Security Generate single or batch RFC 4122 version 4 UUIDs with formatting and casing options. Security Generate RSA public and private key pairs in PEM format client-side using Web Cryptography API. Security Encrypt plaintext securely using AES (GCM/CBC) algorithms directly in your browser. Security Decrypt AES-encrypted ciphertext using a passcode and initialization vector (IV) client-side. Security Decode and validate JSON Web Tokens (JWT) to check header details, payload claims, and signature validity. Security Analyze and identify unknown cryptographic hash formats such as MD5, SHA-1, SHA-256, and bcrypt. Web Tools Parse any URL string client-side to extract the protocol, host, port, path, query parameters, and hash. Web Tools Shorten long URLs quickly and safely using public url shortening API integration. Web Tools Build campaign URLs with custom UTM parameters (source, medium, campaign name) for tracking. Web Tools Generate Open Graph meta tags to customize social share appearances on Facebook and LinkedIn. Web Tools Generate Twitter Card HTML meta tags to optimize your site share cards on X. 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Text Tools Reverse word order coordinates inside sentences.

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JSON Formatter, Validator & Repair Tool

Beautify, validate, auto-repair, minify, and inspect JSON payloads with interactive tree view and format conversions.

Free Online JSON Formatter, Validator & Auto-Fixer

Format raw JSON strings, validate syntax errors with line indicators, auto-repair common syntax mistakes (unquoted keys, single quotes, trailing commas), convert JSON to YAML or CSV, and view interactive JSON tree nodes.

Ready to process JSON.

What is a JSON Formatter & Validator?

A JSON Formatter & Validator inspects JavaScript Object Notation (JSON) strings to verify structural syntax rules, highlight line errors, auto-fix missing quotes or trailing commas, and format un-indented minified payloads for debugging and readability.

How to use it

  1. Paste raw or minified JSON into the input box or upload a .json file.
  2. Click Format / Beautify to indent structures or 🔧 Auto-Fix & Repair to fix invalid quotes and commas.
  3. Toggle between Code View and Tree View to visually inspect nested objects and arrays.
  4. Copy the result or export it as .json, .yaml, or .csv.

Frequently Asked Questions (FAQ)

How does the Auto-Repair feature fix broken JSON?

The Auto-Repair engine automatically replaces single quotes with double quotes, converts unquoted object keys to quoted strings, strips trailing commas from arrays/objects, removes single-line/multi-line comments, and replaces Python boolean literals (True/False/None) with standard JSON equivalents.

Why is JSON validation important for SEO and Web Development?

Search engines like Google rely on valid JSON-LD structured data markup for rich search snippets. Syntax errors (such as missing quotes or trailing commas) break schema parsing, causing search engines to ignore structured snippet data.

Can I convert JSON to YAML or CSV?

Yes, click Convert to YAML or Convert to CSV to instantly transform JSON objects and arrays into clean YAML specifications or CSV spreadsheets.

SEO & Web Development Applications

Validating and formatting JSON ensures clean API responses and well-structured JSON-LD schema markup, preventing Google rich snippet parsing failures.

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