12 tools on this shelf
Developer Tools
Encode, decode, format, and inspect: Base64, URL, JSON, YAML, CSV, JWT, regex, cron, and subnets.
Base64 Encoder / DecoderEncode text to Base64 or decode Base64 back to text — full Unicode support, plus URL-safe variant.URL Encoder / DecoderPercent-encode text for safe use in URLs, or decode %20 and friends back to readable text.HTML Entity Encoder / DecoderEscape special characters to HTML entities (&, <, ") or decode entities back to plain text.JSON Formatter & ValidatorFormat, validate, and minify JSON with syntax-error messages, custom indentation, and key sorting.JSON ⇄ YAML ConverterConvert JSON to YAML and YAML to JSON instantly — ideal for Kubernetes, CI configs, and OpenAPI specs.CSV ⇄ JSON ConverterConvert CSV data to a JSON array of objects and back — with delimiter auto-detection and header support.SQL FormatterBeautify SQL queries with proper indentation and keyword casing — supports PostgreSQL, MySQL, T-SQL, and more.JWT DecoderDecode a JSON Web Token to inspect its header and payload — with human-readable expiry timestamps.Regex TesterTest regular expressions against sample text with live match highlighting and capture-group details.Cron Expression ParserTranslate cron expressions into plain English and understand each of the five fields at a glance.Chmod CalculatorConvert Unix file permissions between checkbox, octal (755), and symbolic (rwxr-xr-x) notation.IP Subnet CalculatorCalculate network address, broadcast, host range, and usable host count from an IPv4 address and CIDR prefix.