Developer Tools
Developer tools cover JSON formatting and validation, regex testing, CSS unit conversion, color conversion, and day-to-day frontend and backend debugging tasks, helping you inspect data and move faster.
11 tools
Common developer tasks
Format and validate JSON returned by an API
Test regex patterns, match rules, and replacement results
Convert color values and CSS units while building frontend styles
JSON Formatter & Validator
JSON Formatter & Validator lets you format, validate, and minify JSON online, with error locations, key sorting, and indentation control for API debugging, config editing, log inspection, and code review.
JSON to TypeScript
JSON to TypeScript converts JSON samples into TypeScript interfaces and type aliases, with inferred optional fields, unions, and array item structure for API modeling, frontend bootstrapping, and mock data cleanup.
JSON ↔ YAML Converter
JSON ↔ YAML Converter supports bidirectional conversion between JSON and YAML with side-by-side editing and instant sync, making it useful for Kubernetes, Helm, CI configs, and API debugging.
JSON ↔ CSV Converter
JSON ↔ CSV Converter supports bidirectional conversion between CSV, TSV, and JSON, with delimiter detection, header mapping, and field cleanup for imports, exports, spreadsheets, and API payload prep.
JWT Decoder
JWT Decoder supports parsing JWT tokens so you can inspect the header, payload, and time-based claims for API debugging, expiry checks, and token review.
Regex Tester
Online Regex Tester with live matching, capture groups, named groups, and replacement preview for pattern validation, text extraction, and batch replacement.
Hash Checksum
Hash Checksum supports SHA-256, SHA-512, and SHA-1 for text and files, with fast comparison against expected values for download checks, backup verification, and file integrity review.
CSS Unit Converter
CSS unit converter for px, em, rem, %, vw, vh, and pt with responsive breakpoint settings and context-aware calculations for frontend implementation and layout tuning.
Color Converter
Color converter for HEX, RGB, HSL, and CMYK with live preview, color picker, and synchronized values for design handoff, CSS styling, and palette checks.
Lorem Generator
Lorem Generator supports placeholder text generation by paragraph, word, or character count, with an optional Lorem ipsum opening for layout tests, mockups, and content placeholders.
Cron Expression Parser
Cron Expression Parser supports parsing and validating cron expressions, previewing upcoming run times, switching timezones, and reading human-friendly descriptions for crontab, CI/CD, and scheduled task debugging.
Tool Categories