Utility
4 toolsQR codes, hash calculator, time converter and more
QR GeneratorGenerate QR codes from text or URLs. Customize size and color.Open →Hash ConverterCalculate hash values for text or files (MD5, SHA-1, SHA-256, SHA-512).Open →Time ConverterConvert Unix timestamps to human-readable dates and between US/JP timezones.Open →Seal Stamp MakerCreate seal stamps (hanko) and custom stamp images in your browser. Download as PNG.Open →
Generate QR codes, compute hashes, convert timestamps across time zones, create hanko stamps, and more — everyday tools in one place.
Use Cases
- —Turn a URL or contact into a QR code for instant sharing
- —Compute SHA-256 or other hashes to verify file integrity
- —Convert times across time zones for international meetings
Who It's For
Engineers, business professionals, and anyone who works across borders or needs quick utility tools
Privacy
All input is processed entirely in the browser — nothing is sent to any external service.