Utilities
Online converters and formatters: HEX/RGB/HSL colors, Base64, JSON, TOON, YAML, and JSONPath. Quick tools for everyday development.
Lightweight utilities to convert, format, and inspect common data in web development and APIs.
Color Converter
Convert colors between HEX, RGB, HSL, and OKLCH with live preview. Explore perceptually uniform spaces and copy CSS values.
- cores
- css
Base64 Encoder
Encode and decode text in Base64 with URL-safe support. Free online tool — ideal for APIs, JWT, and data transfer.
- encoding
- base64
JSON Formatter
Format, minify, and query JSON with JSONPath online. Validate syntax, adjust indentation, and extract fields from complex payloads.
- json
- jsonpath
JSON Schema Validator
Validate a JSON document against a JSON Schema (draft 2020-12) in the browser, with path and keyword errors.
- json
- schema
- validation
Text / JSON Diff
Compare two texts or JSON payloads side by side or in a unified view, with highlighted additions and removals in the browser.
- diff
- json
- text
JSON Flattener
Flatten nested JSON into flat keys (dot or bracket) and rebuild the original structure. Useful for configs, spreadsheets, and APIs.
- json
- flatten
JSON Compress
Compress JSON with gzip deterministically and reversibly in the browser. Generate a base64 envelope to store or transfer smaller payloads.
- json
- compress
- gzip
JSON | TOON Converter
Coming soon
Convert between JSON and TOON (Token-Oriented Object Notation) in the browser — a compact format for LLM prompts. Coming soon.
- toon
- json
- llm
JSON | YAML Converter
Convert between JSON and YAML with real-time validation. Useful for CI configs, Kubernetes, Docker Compose, and env files.
- yaml
- json
XML Formatter
Format or minify XML online — 2 or 4 space indentation, ideal for sitemaps, RSS, and configs.
- xml
- formatter