Online Utilities
23 browser-based utilities for generating codes, tokens, hashes, random data, and running calculations. All processing stays on your device.
23 Utilities — All in Your Browser
Generate QR codes, barcodes, UUIDs, JWT, hashes, passwords, names, numbers. Convert timestamps and units. Calculate percentages, BMI, and loans. No uploads.
Featured Utilities
Most popular utilities our users rely on every day.
QR Code Generator
Create QR codes from links, contact info, or text for marketing and sharing.
Password Generator
Create strong, random passwords with customizable length and character types.
JSON Formatter & Validator
Format, validate, minify, and syntax-highlight JSON data instantly.
UUID Generator
Generate random UUID v4 strings for databases, APIs, and development.
All Utilities
Browse all 23 utilities for generating, converting, and calculating.
QR Code Generator
Create QR codes from links, contact info, or text for marketing and sharing.
Password Generator
Create strong, random passwords with customizable length and character types.
Lorem Ipsum Generator
Generate placeholder text for design prototypes and development work.
URL Slug Generator
Convert page titles into clean, SEO-friendly URL slugs.
JSON Formatter & Validator
Format, validate, minify, and syntax-highlight JSON data instantly.
Color Picker & Converter
Pick colors and convert between HEX, RGB, HSL, and CMYK formats.
Age Calculator
Calculate your exact age in years, months, days, and hours from any birth date.
UUID Generator
Generate random UUID v4 strings for databases, APIs, and development.
Barcode Generator
Generate Code 128, Code 39, EAN-13, UPC-A barcodes. Download as PNG or SVG.
Random Name Generator
Generate random male, female, and neutral names from multiple countries.
Random Number Generator
Generate random numbers with custom ranges, decimals, and unique values.
UUID v7 Generator
Generate time-ordered UUID v7 identifiers with bulk options.
Password Strength Checker
Analyze password entropy, character diversity, and common weaknesses.
Hash Generator
Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from any text.
Hash Checker
Verify data integrity by comparing text against an existing hash.
JWT Decoder
Decode JWT tokens and inspect header, payload, and signature locally.
JWT Generator
Build and generate JWT tokens with HMAC signing for development.
Cron Expression Generator
Build cron expressions visually with human-readable descriptions.
Unix Timestamp Converter
Convert Unix timestamps to readable dates and dates to timestamps.
Unit Converter
Convert length, weight, temperature, area, volume, speed, and more.
Percentage Calculator
Calculate X% of Y, percentage increase, decrease, difference, and reverse.
BMI Calculator
Calculate Body Mass Index with metric or imperial units and category analysis.
Loan Calculator
Calculate monthly payments, total interest, and full amortization schedule.
Why Browser-Based Utilities?
100% Private
Your data never leaves your device. No uploads, no servers, no tracking.
No Sign-Up
No accounts, no emails, no passwords. Just open the tool and start working.
Fast Processing
All computation happens locally. No waiting for server round trips.
Secure by Design
Sensitive data stays on your machine. No data transmission, no storage, no risk.
Popular Utility Guides
Learn how to get the most out of our utilities.
Frequently Asked Questions
Are these online utilities really free?
Yes, all 23 utilities are completely free to use. No sign-up, no usage limits, no premium tiers. Everything runs in your browser.
Can I generate QR codes and barcodes?
Yes, you can generate QR codes from URLs, text, or contact info, and barcodes in Code 128, Code 39, EAN-13, and UPC-A formats, downloadable as PNG or SVG.
Do you support UUID generation?
Yes, we support both UUID v4 (random) and UUID v7 (time-ordered) generation with bulk options. All generation happens locally in your browser.
Can I decode and generate JWT tokens?
Yes. The JWT Decoder inspects header, payload, and signature locally. The JWT Generator lets you build and sign tokens with HMAC for development.
What calculators and converters are available?
We offer a Percentage Calculator, BMI Calculator, Loan Calculator with amortization, Unit Converter for length/weight/temperature/volume/speed, and a Unix Timestamp Converter.
How these tools work: All processing happens in your browser. Files are not uploaded to servers. Nothing is logged or stored.