Tools
Free browser-based utilities for working with SQL, JSON, CSV, and data. Everything runs client-side — your data never leaves your machine.
Whether you're formatting a query, validating JSON, converting between data formats, or generating test data, these tools are built for the way developers and analysts actually work every day. No accounts, no data uploads — just open and use.
SQL
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SQL formatter
Format and beautify SQL with dialect-aware indentation
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SQL diff
Compare two SQL queries with a highlighted line-by-line diff
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SQL validator
Check SQL for syntax errors before running it
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SQL minifier
Compress SQL into a single line by stripping whitespace and comments
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SQL schema visualizer
Generate ER diagrams from CREATE TABLE statements
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Prisma schema visualizer
Generate ER diagrams from a Prisma schema file
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SQL explainer
Explain SELECT queries in plain English
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SQL query builder
Build SQL queries from tables, joins, and filters
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Database schema diff
Compare two database schemas and see structural differences
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JSON
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JSON formatter
Format and beautify JSON with customizable indentation
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JSON validator
Check JSON for syntax errors with detailed diagnostics
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JSON flattener
Flatten nested JSON into table-ready keys
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JSON diff
Compare two JSON documents with a highlighted diff
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JSON to YAML converter
Convert JSON to YAML and back instantly
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JSON schema validator
Validate JSON data against a JSON Schema definition
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