Free tools
Everyday utilities tools
QR codes, random picks, links, phone codes and everyday conversions.
3 tools · no sign-up · no uploads
QR code
Turn a URL or text into a downloadable PNG or SVG QR code with adjustable size and error correction.
Open toolURL encoder
Percent-encode or decode a URL component or a full URL, with clear validation for malformed input.
Open toolPhone lookup
Find country calling codes, look up US and Canadian area codes, and format or validate a phone number locally.
Open toolLooking for something else? Browse all 36 tools.
All toolsRelated reading
The context behind these tools.
How QR codes work, and how to scan them safely
QR codes pack data into a square grid with error correction. Learn how they encode a URL, why some codes fail, and how to check one before you open it.
How the internet works, in one sitting
What happens between typing a web address and seeing a page — DNS, packets, TLS and the journey across networks.
What is an API?
A plain-English guide to endpoints, requests, responses, API keys and rate limits — using the restaurant waiter analogy and a real weather example.