JSON → PostgreSQL
INSERT Generator

About JSON to PostgreSQL INSERT Generator

This free online JSON to PostgreSQL converter tool allows you to transform JSON data into ready-to-run PostgreSQL INSERT statements and vice versa. Whether you're a developer seeding databases, migrating data, testing queries, or converting SQL results back to JSON, our bidirectional converter generates properly formatted, type-aware SQL with correct quoting, escaping, and batch INSERT optimization. Everything runs 100% in your browser with no server uploads.

Why Convert Between JSON and PostgreSQL?

Modern applications frequently need to move data between JSON (the standard API format) and PostgreSQL databases. Developers export JSON from APIs or frontend applications and need to insert it into PostgreSQL for storage and querying. Database administrators need to generate seed data, migrate records between environments, or create test datasets. Writing INSERT statements manually is tedious, error-prone (missing quotes, incorrect escaping, wrong type casting), and slow for large datasets. Automated conversion ensures proper SQL syntax, handles special characters correctly, optimizes for performance with multi-row INSERTs, and saves hours of manual work.

How to Use This Converter

Choose your conversion direction: JSON → SQL mode converts JSON arrays of objects into PostgreSQL INSERT statements with a single multi-row INSERT for optimal performance. SQL → JSON mode parses INSERT statements and extracts the data back into a clean JSON array. Paste your JSON array or SQL INSERT statement into the input field, click Generate INSERT or Convert to JSON, and get instant results. The output is ready to copy into psql, pgAdmin, or your SQL client, or download as .sql or .json files.

Key Benefits

• No installation required: Works directly in your browser without any software downloads
• Completely free: No registration, credit card, or hidden fees
• Secure and private: All conversion happens locally - your data never reaches our servers
• Fast processing: Instant conversion with no waiting time
• Bidirectional: Convert JSON ↔ SQL INSERT statements with full roundtrip support
• Type-aware: Strings are escaped and quoted, numbers/booleans unquoted, nulls become NULL
• Batch optimization: Generates single multi-row INSERT for maximum database performance
• Proper escaping: Handles special characters, quotes, and SQL injection prevention

Common Use Cases

Developers use JSON to SQL converters for seeding databases with initial data from JSON configuration files, migrating data from NoSQL databases or APIs to PostgreSQL, generating test datasets for development and staging environments, importing JSON exports from other systems into PostgreSQL tables, creating migration scripts with INSERT statements for version control, batch inserting records from API responses or web scraping results. Database administrators use it for data migration between environments (dev to prod), creating backup INSERT scripts from JSON exports, generating seed data for testing and demos, converting JSON logs or analytics into relational tables. QA engineers create test fixtures, populate test databases, and verify data transformations.

Supported PostgreSQL Features

JSON to SQL conversion generates multi-row INSERT statements (VALUES with multiple tuples) for optimal performance, properly escapes single quotes and special characters in strings, handles PostgreSQL-specific types (timestamptz for dates, boolean for true/false), converts JSON null to SQL NULL, preserves numeric precision, quotes column and table names for reserved keywords, and generates valid PostgreSQL 9.5+ syntax. SQL to JSON parsing extracts table names, column names, and all values from INSERT statements, handles both single and multi-row INSERTs, unescapes quoted strings correctly, interprets NULL values, and preserves data types (numbers, booleans, strings).

Technical Features

The converter intelligently detects data types and applies correct SQL quoting rules: strings are single-quoted with escape sequences for apostrophes and backslashes, numbers (integers and decimals) are unquoted, booleans are rendered as true/false, null values become NULL, dates are cast to timestamptz, and arrays/objects are serialized. The generated SQL uses efficient multi-row INSERT syntax instead of separate statements per row, reducing database round-trips. Error messages pinpoint syntax issues in both JSON and SQL inputs. Quick actions include copy, download (.sql or .json), and swap for roundtrip conversion testing.

Privacy and Security

Unlike online converters that upload your data to remote servers, this tool processes everything locally in your browser using JavaScript. Your database records, customer data, user credentials, API payloads, or any sensitive information never leave your computer, making it completely safe for converting production data. No cookies, tracking, data storage, or server communication. Perfect for working with real database records, PII (personally identifiable information), financial data, or any confidential datasets that require strict privacy controls. Your PostgreSQL credentials and database schema remain secure.