Start building on Google Cloud with $300 in free credits. No commitment, no credit card required until you're ready to scale.
Launch your next project with $300 in free Google Cloud credits—no strings attached. Test, build, and deploy without risk. Use your credits across the entire Google Cloud platform to find what works best for your needs. After your credits are used, continue with always-free tier services. Only pay when you're ready to scale. Sign up in minutes and start exploring.
Start Free Trial
Train ML Models With SQL You Already Know
BigQuery automates data prep, analysis, and predictions with built-in AI assistance.
Build and deploy ML models using familiar SQL. Automate data prep with built-in Gemini. Query 1 TB and store 10 GB free monthly.
Encode input data in a QR Code and save as a PNG image
Libqrencode is a library for encoding data in a QR Code symbol, a kind of 2D symbology that can be scanned by handy terminals such as a mobile phone with CCD. The capacity of QR Code is up to 7000 digits or 4000 characters, and has high robustness.
Qrencode is a utility software using libqrencode to encode string data in a QR Code and save as a PNG image.
Source code: https://github.com/fukuchi/libqrencode
Multi-platform QR code generator from information supplied
QRGen creates QR codes from contact information, written in Java.
It requires the tool qrencode in order to work, qrencode is freely available at http://fukuchi.org/works/qrencode (Linux/Mac OS/UNIX) , or http://code.google.com/p/qrencode-win32/ (Windows), or Ubuntu Software Centre.