Free Online Tools
No Signup Required
150+ powerful web-based utilities for everyone. All tools run in your browser for maximum privacy.
100% Free, Privacy-Focused Tools
Welcome to the ultimate collection of web-based tools built with modern web technologies (SvelteKit, Tailwind CSS). Every tool is completely free and requires zero signup.
Tool Categories
📄 Text & Content Tools
Word counter, case converter, Lorem Ipsum generator, text diff tool
🛠️ Developer Tools
JSON formatter, Base64 encoder, URL encoder, hash generator, regex tester, JWT decoder
⚡ Generators
UUID, password, QR code, barcode, fake data, color palette, gradient generators
🖼️ Image & File Tools
Image compressor, resizer, PNG to JPG converter, PDF tools, Video to GIF
🧮 Calculators
Tip, percentage, age, unit, temperature, weight, compound interest calculators
🎉 Fun & Viral Tools
Is it Friday, coin flip, dice roller, Magic 8 Ball, random name picker, bingo cards
Most Popular Tools
JSON Formatter & Validator
Format, validate, and beautify JSON data with syntax highlighting
Image Compressor
Compress images to reduce file size while maintaining quality
QR Code Generator
Generate custom QR codes with colors and error correction
Password Generator
Create secure passwords with customizable length and characters
Meme Generator
Create custom memes with popular templates or upload your own images
How Our Tools Work: Privacy by Architecture
Unlike most online tool websites that upload your files to a remote server for processing, every tool on ToolBox runs entirely in your web browser using client-side JavaScript. This is a fundamental architectural decision, not just a feature checkbox.
When you compress an image, format JSON, or generate a password on ToolBox, your browser's JavaScript engine does the actual computation using native Web APIs - the Canvas API for image manipulation, the Web Crypto API for hashing and encryption, and the File API for handling uploads. Your data never leaves your device, is never transmitted over the network, and is never stored on any server. You can verify this yourself by opening your browser's developer tools and monitoring the Network tab while using any tool.
This approach has three key advantages: privacy (your sensitive data stays on your device), speed (no upload/download wait times - processing is instant), and reliability (tools continue working even if your internet connection drops after the initial page load).
Who Uses ToolBox?
Software Developers
Format and validate JSON API responses, encode/decode Base64 strings, generate UUIDs for database records, test regular expressions, decode JWT tokens, compute file hashes for integrity verification, and convert between data formats like JSON, YAML, XML, and CSV.
Designers & Creatives
Compress images for web performance without quality loss, convert between image formats (PNG, JPG, WebP, SVG), generate color palettes and gradients, create QR codes and barcodes, check color contrast for accessibility compliance, and generate placeholder images for mockups and wireframes.
Content Creators & Marketers
Generate SEO meta tags and Open Graph previews, create social media captions and Instagram bios, count words and estimate reading times, generate Lorem Ipsum placeholder text, create memes from templates, and build email signatures with professional formatting.
Students & Educators
Calculate percentages, compound interest, and unit conversions for homework. Analyze text readability with the reading level analyzer. Create flashcards for studying. Use the Pomodoro timer for focused study sessions. Generate citations, convert between number bases, and explore Fibonacci sequences for math classes.
Learn While You Work
Every tool includes educational content explaining how it works, practical use cases, and expert tips. We also publish in-depth guides on essential topics:
Complete JSON Guide
Syntax, validation, and best practices
Regex Tutorial
From basics to advanced patterns
Image Optimization
Formats, compression, and performance
Color in Design
HEX, RGB, HSL explained
Web Accessibility
WCAG compliance and best practices
Cybersecurity Basics
Protecting yourself online
What You Can Do With ToolBox
Developer & Code Tools
Our developer tools handle the repetitive tasks that slow down your coding workflow. The JSON formatter parses, validates, and beautifies JSON with configurable indentation - essential for debugging API responses. The regex tester lets you build and test regular expressions with real-time matching, capture group highlighting, and a reference cheat sheet. Convert between data formats seamlessly: JSON to CSV, JSON to YAML, CSV to JSON, and more. The JWT decoder inspects token payloads and expiration dates without exposing your tokens to third-party services.
Image & Media Processing
Process images directly in your browser without uploading them to any server. The image compressor reduces file sizes using the Canvas API while preserving visual quality - critical for web performance where every kilobyte affects page load speed. Convert between formats: PNG to JPG, JPG to PNG, WebP converter, and SVG to PNG. Merge and split PDFs, create GIFs from video, generate thumbnails, and crop or resize images to exact dimensions - all processed locally on your device.
Calculators & Converters
From financial planning to everyday math, our calculators provide accurate results with clear explanations. The compound interest calculator models investment growth over time with visualizations. The mortgage calculator breaks down monthly payments, total interest, and amortization schedules. Unit converters handle temperature, weight, cooking measurements, and currency conversions with real-time results as you type.
Enjoying These Free Tools?
All 150+ tools are completely free with no signup required. If you find them useful, consider supporting me to help keep the lights on and build even more tools!
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