Free Online Tools
Free online tools for generating QR codes, creating secure passwords, formatting JSON, converting text case, counting words and characters, and handling everyday digital tasks.
All Tools
6 tools
JSON Formatter
Free online JSON formatter, validator and beautifier for formatting, pretty printing and checking JSON data.
Password Generator
Free online random password generator to create strong, unique, and customizable passwords instantly.
QR Code Generator
Free online QR code creator to generate scannable codes for website URLs, text, Wi-Fi details, contact information, and digital resources.
Text Case Converter
Free online text case changer to convert text between uppercase, lowercase, title case, sentence case, camelCase, snake_case, PascalCase, and kebab-case.
UUID Generator
Free online random UUID generator to create unique identifiers, supporting UUID version 4 and version 7 in single or bulk formats.
Word & Character Counter
Free online word and character counter to track words, letters, spaces, sentences, paragraphs, and character limits in real time.
Free online tools
Simple utilities for everyday digital tasks.
Calvyn's online tools are designed to make common digital tasks faster and easier. Use practical utilities for generating QR codes, creating passwords, formatting JSON, working with text and more.
Each tool is designed to be straightforward, fast and easy to use directly in your browser. As Calvyn grows, this collection will continue to expand with more useful utilities.