Tools Hub
Discover useful tools for work, study, development and everyday tasks.
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Loading...Word & Character Counter
Real-time word, character, sentence, and paragraph counter with reading time estimation and keyword density metrics.
Secure Password Generator
Cryptographically secure password generator utilizing window.crypto API with custom symbols, numbers, and entropy calculation.
JSON Formatter & Validator
Beautify, format, validate, and minify JSON data with exact syntax error highlighting and one-click clipboard copying.
Text Case Converter
Easily switch between UPPERCASE, lowercase, Title Case, camelCase, snake_case, and kebab-case without data loss.
BMI Health Calculator
Accurate Body Mass Index calculation supporting metric and imperial units with WHO health category classifications.
Percentage Calculator
Calculate percentage increase, decrease, discounts, markups, and exam score percentages with step-by-step arithmetic.
Base64 Encoder & Decoder
Encode plain text or binary data into Base64 format and decode Base64 back into readable strings with UTF-8 support.
Why Choose HarshGuruJi Online Tools?
Every utility hosted on HarshGuruJi is engineered with three core principles: zero server logging, instant client-side execution, and complete platform independence. Unlike conventional tool websites that transmit your data to remote servers, our text tools, calculators, and generators compute results directly within your web browser using HTML5, Web Workers, and the Web Cryptography API.
🔒 100% Private
Your text, passwords, and JSON payloads never leave your computer. Total confidentiality guaranteed.
⚡ Zero Latency
Zero network round trips. Operations happen in real-time as you type, even on slower 3G/4G connections.
📱 Mobile Responsive
Fully optimized interfaces for Android, iOS, Windows, macOS, and Linux touchscreens and desktop screens.