Free Online Tools
for Developers, Writers & Creators
Format JSON, generate UUIDs & QR codes, encode Base64 & URLs, pick colors, test regex, create secure passwords & more — 15+ tools, all instant, private, no sign-up.
Powerful Utility Tools at Your Fingertips
Whether you're a developer generating unique identifiers, a writer checking word counts, or anyone needing a strong password — Zutily has the right tool for you.
Developer & Engineering Tools
Generate UUIDs in bulk, compute SHA-256 hashes, format & validate JSON, encode/decode Base64 & URLs, convert Unix timestamps, pick & convert colors (HEX, RGB, HSL), and test regular expressions with real-time highlighting.
Explore developer toolsWriting & Productivity Tools
Count words, characters, and paragraphs with reading time estimates. Compare text with a real-time diff checker in inline & side-by-side views. Convert text to UPPERCASE, lowercase, Title Case & more. Generate lorem ipsum placeholder text in multiple styles — Classic, Hipster, Corporate, and Tech.
Explore productivity toolsGenerators & QR Codes
Create cryptographically strong passwords with a real-time strength meter. Generate random strings in HEX or Base64 with batch generation up to 100. Create custom QR codes for URLs, Wi-Fi, vCards, email, phone & more — with custom colors, transparent backgrounds, and PNG/SVG export.
Explore generatorsBrowse All Free Online Tools
Every utility you need — organized by category. Pick a tool and start using it in seconds, no downloads required.
Essential utilities for developers and engineers.
UUID Generator
Generate UUID v4 identifiers in bulk with formatting options.
Open toolHash Generator
Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from any text.
Open toolJSON Formatter & Validator
Format, validate, minify, and explore JSON data with real-time error detection.
Open toolBase64 Encoder / Decoder
Encode text to Base64 or decode Base64 strings instantly with UTF-8 and URL-safe support.
Open toolURL Encoder / Decoder
Encode or decode URLs and query strings with percent-encoding. Supports full Unicode.
Open toolUnix Timestamp Converter
Convert Unix timestamps to human-readable dates and vice versa. Supports seconds, milliseconds, and multiple timezones.
Open toolColor Picker & Converter
Pick and convert colors between HEX, RGB, HSL, and HSV with live preview, harmony palettes, and shades.
Open toolRegex Tester
Test and debug regular expressions with real-time highlighting, capture groups, find & replace, and presets.
Open toolTools to boost your writing and productivity.
Word & Character Counter
Count words, characters, paragraphs, and estimate reading time.
Open toolText Difference Checker
Compare two text blocks and highlight the differences instantly.
Open toolCase Converter
Convert text to UPPERCASE, lowercase, Title Case, Sentence case, and more instantly.
Open toolLorem Ipsum Generator
Generate customizable placeholder text in paragraphs, sentences, or words with multiple styles.
Open toolGenerate passwords, random strings, and more securely.
Password Generator
Generate strong, secure passwords with customizable options.
Open toolRandom String Generator
Generate random strings with custom length, charset, and encoding.
Open toolQR Code Generator
Create branded QR codes with logo, custom dot shapes, frames & 18+ content types. Export as PNG, SVG, JPEG or PDF.
Open toolThe Difference That Matters
Unlike other online tool sites, Zutily is built with performance, privacy, and user experience as non-negotiable priorities.
Instant Browser Processing
Most tools process data entirely client-side using Web Crypto API and modern JavaScript — delivering results in milliseconds with zero server latency.
Zero Data Collection
Your passwords, UUIDs, text, and hashes are never stored, logged, or transmitted. We use stateless processing and client-side execution for complete privacy.
No Registration Required
Use every tool immediately — no sign-up, no email verification, no premium gates. All features are available to everyone, always.
Works on Any Device
Fully responsive, mobile-first design. Every tool is optimized for smartphones, tablets, and desktops with touch-friendly interfaces.
Why Professionals Choose Zutily for Daily Utility Tasks
Zutily was created to solve a simple problem: developers, writers, and digital professionals need quick access to reliable utility tools without dealing with bloated websites, forced sign-ups, or privacy concerns. With 15+ tools across 3 categories, every utility is engineered for speed, security, and simplicity.
Developer tools include a UUID Generator (v1, v4, v7, Nil, GUID with bulk generation up to 1,000), Hash Generator (MD5, SHA-1, SHA-256, SHA-512), JSON Formatter & Validator with tree view, Base64 Encoder/Decoder with file support, URL Encoder/Decoder with query string builder, Unix Timestamp Converter with timezone support, Color Picker & Converter (HEX, RGB, HSL, HSV with harmonies and WCAG contrast), and Regex Tester with match highlighting, capture groups, and presets.
Productivity tools cover a Word & Character Counter with reading time and readability estimates, Text Difference Checker with inline and side-by-side views, Case Converter (UPPERCASE, lowercase, Title Case, camelCase, Toggle Case, and more), and Lorem Ipsum Generator with four styles — Classic, Hipster, Corporate, and Tech.
Generators include a Password Generator powered by Web Crypto API with a real-time strength meter, Random String Generator with HEX/Base64 modes and batch generation, and a QR Code Generator supporting URLs, Wi-Fi, vCards, email, phone, SMS — with custom colors, transparent backgrounds, and PNG/SVG export.
Everything You Need to Know About Zutily
Frequently Asked Questions
Quick answers to common questions
Start Using Free Online Tools Today
No sign-up required. Pick any tool and get instant results — your data stays private, your workflow stays fast.