Free online developer and QA tools

All tools

• Test Data GeneratorCreate realistic fake records for testing, demos and database seeding, then export them as JSON, CSV, XML, HTML, SQL inserts, Python or JavaScript.
• Random Password and Key GeneratorGenerate strong random passwords and keys with your choice of length and character sets, using your browser’s cryptographically secure random number generator.
• CSV, TSV, JSON and XML ConverterConvert data between CSV, TSV, JSON, XML and a single column of values in any direction, with automatic format detection and file upload.
• JavaScript Minifier and ValidatorCompress JavaScript with Terser for a smaller file, or validate code and see syntax errors with their line numbers.
• JSON Formatter and ValidatorBeautify and validate JSON, find the exact line of an error, and convert JavaScript object literals into strict JSON.
• SQL Formatter and BeautifierMake SQL queries readable or minify them to one line, for Standard SQL, MySQL, PostgreSQL and Transact-SQL.
• Diff Checker: Compare Two TextsCompare two blocks of text or two files and see what changed, line by line.
• Case ConverterChange text to UPPERCASE, lowercase or Title Case in one click.
• camelCase, PascalCase, snake_case and kebab-case ConverterTurn any phrase into programming naming styles as you type: camelCase, PascalCase, snake_case, kebab-case and Capitalized Case.
• YAML ValidatorCheck YAML files for syntax errors before they break a deployment, from Kubernetes manifests to GitHub Actions workflows.

The tools process your text and files in your browser; nothing you paste is uploaded or stored. Read the tool guides for tips on each one.