OnSubmit 14 tool(s)
Development tools
Format, validate, generate and inspect JSON, tokens, hashes and technical data for development and QA workflows. Find the most useful tools in this category.
Category
Development
Tools grouped by the task they perform.
UUID GeneratorGenerate UUID v4 identifiers for databases, APIs, fixtures and distributed systems.Open toolPassword GeneratorGenerate passwords with configurable length, letters, numbers and symbols.Open toolURL Encoder / DecoderEncode or decode URLs, query strings and percent-encoded text.Open toolJSON FormatterValidate JSON syntax and format JSON, XML or SQL snippets for debugging and documentation.Open toolRegex TesterTest JavaScript regular expressions, flags, matches and replacements.Open toolJWT Decoder / EncoderDecode, inspect and regenerate test JSON Web Tokens with HS256.Open toolCron Expression ParserParse a cron expression and preview upcoming run times.Open toolMD5 Hash GeneratorCalculate and compare the MD5 digest of UTF-8 text or local files for checksums, compatibility and legacy workflows.Open toolTimestamp ConverterConvert Unix timestamps to readable dates and dates back to Unix time.Open toolCSV JSON ConverterConvert CSV to JSON and JSON back to CSV directly in the browser.Open toolJSON to TypeScriptGenerate TypeScript interfaces from a representative JSON example.Open toolYAML JSON ConverterConvert YAML to JSON and JSON back to YAML for configuration and API workflows.Open toolSHA256 / SHA512 GeneratorCalculate SHA-256, SHA-384 and SHA-512 hashes for text.Open tool.env Example GeneratorCreate a .env.example by replacing variable values, then review it before sharing.Open tool