Dev utilities,
without the IDE.
Free formatters, encoders, generators, validators, and network calculators every developer needs daily. Client-side only — your code and data never touch a server.
14 tools on the way.
The most-opened tabs in every developer's browser — plus networking and electronics calculators. More will follow based on what you need.
JSON Formatter & ValidatorSoon
Pretty-print, minify, and validate JSON with syntax errors highlighted at the exact line.
Base64 Encode / DecodeSoon
Text ↔ Base64 (and Base64URL) with file support up to 50MB, all client-side.
URL Encode / DecodeSoon
Encode/decode URI components with batch support and component-by-component breakdown.
UUID GeneratorSoon
UUID v1, v4, v7 in any count. Copy as JSON, CSV, or one per line.
Hash GeneratorSoon
MD5, SHA-1, SHA-256, SHA-512 — for text or files. Compare two hashes side-by-side.
Regex TesterSoon
Live regex matching with capture groups, common flags, and a library of well-known patterns.
IP Subnet CalculatorSoon
CIDR subnet calculator — network address, broadcast, host range, and usable IPs.
Password GeneratorSoon
Cryptographically secure passwords with custom length, character sets, and bulk generation.
Voltage Drop CalculatorSoon
Voltage drop over wire length given gauge, current, and material — NEC compliant.
Resistor CalculatorSoon
Decode resistor color bands (3, 4, 5, 6-band) and calculate series/parallel combinations.
Ohms Law CalculatorSoon
Solve for voltage, current, resistance, or power given any two known values.
Electricity CalculatorSoon
Calculate kWh usage and electricity cost for any appliance given wattage and hours.
Bandwidth CalculatorSoon
Calculate download/upload time, required bandwidth, and data usage for any file size or speed.
Conversion CalculatorSoon
Universal unit converter — length, weight, volume, temperature, speed, area, and more.
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