100+ Free Online Developer Tools
All-in-one toolkit for developers. Access powerful encoding, hashing, formatting, conversion, and design tools. Free, fast, and privacy-focused. Everything runs locally in your browser - no data ever leaves your device.
Popular Tool Categories
Encoding & Decoding
URL, Base64, JWT, and more encoding tools
Hash Generators
MD5, SHA-256, SHA-512 hash generation
Formatters & Minifiers
JSON, CSS, JS, HTML, and SQL formatters
Calculators
BMI, loan EMI, tip, and percentage calculators
Design Tools
Color converters, gradients, and CSS generators
Security Tools
Password generators, validators, and checkers
Text Utilities
Case converters, word counters, and more
Image Tools
Blur, resize, and convert images
Generators
QR codes, UUIDs, lorem ipsum, and more
Your Complete Developer Toolkit - 100% Free & Privacy-First
DevTools Hub is your go-to platform for accessing over 100 essential developer tools, all running entirely in your browser. Whether you're a professional developer, designer, content creator, or student, our comprehensive collection of tools helps you work faster, smarter, and more efficiently without compromising your privacy.
Why Choose DevTools Hub?
In today's fast-paced development environment, having quick access to reliable tools is essential. DevTools Hub eliminates the need to install heavy software, create accounts, or worry about data privacy. Every single tool on our platform runs locally in your browser, ensuring that your sensitive data never leaves your device.
🔒 100% Privacy-Focused
All processing happens locally in your browser. We never send, store, or track your data.
⚡ Lightning Fast
No server roundtrips means instant results. Tools load and process data in milliseconds.
🆓 Completely Free
Access all 100+ tools without subscriptions, paywalls, or hidden fees. Forever free.
📱 Works Everywhere
Fully responsive design works seamlessly on desktop, tablet, and mobile devices.
Explore Our Tool Categories
Our extensive collection is organized into intuitive categories, making it easy to find exactly what you need:
- Encoding & Decoding Tools - URL encoding, Base64 encoding/decoding, JWT decoding, and binary conversions
- Hash Generators - MD5, SHA-256, SHA-512 hash generation for security and verification
- Code Formatters & Minifiers - JSON, CSS, JavaScript, HTML, and SQL formatting and minification
- Data Converters - CSV to JSON, XML to JSON, HTML to Markdown, and 20+ more conversions
- Calculators - BMI, loan EMI, percentage, tip, discount, and age calculators
- Security Tools - Password generators, strength checkers, and validation tools
- Design & CSS Tools - Color converters, gradient generators, button generators, and favicon creators
- Image Tools - Image resizing, blurring, Base64 conversion, and EXIF data viewing
- Text Utilities - Case converters, word counters, text comparison, and manipulation tools
- Generators - QR codes, UUIDs, barcodes, lorem ipsum, random names, and quotes
- SEO Tools - Meta tag generators, Open Graph generators, robots.txt, and sitemap creators
- Validators - Email, URL, IP address, and UUID validation tools
Popular Tools & Use Cases
Some of our most-used tools help developers streamline their daily workflows. The JSON Formatter beautifies and validates JSON data instantly, making API responses readable. Our Password Generator creates cryptographically secure passwords with customizable options. The QR Code Generator lets you create QR codes for URLs, text, or contact information in seconds.
Developers working with authentication love our JWT Decoder for inspecting token payloads. Content creators rely on the Lorem Ipsum Generator for placeholder text. Web designers frequently use our Color Converter to switch between HEX, RGB, and HSL formats effortlessly.
Built for Modern Developers
DevTools Hub is designed with the modern development workflow in mind. All tools feature clean, intuitive interfaces that work seamlessly across all devices. We prioritize accessibility, performance, and user experience in every tool we build. The platform is optimized for speed with minimal JavaScript and efficient rendering, ensuring tools load instantly even on slower connections.
We continuously update and expand our tool collection based on developer feedback and emerging needs in the tech community. Whether you're debugging code, formatting data, generating secure tokens, or creating design assets, DevTools Hub has you covered with professional-grade tools that require zero setup.
Frequently Asked Questions
Are these tools really free?
Yes, absolutely! All 100+ tools are completely free to use with no subscriptions, registrations, or hidden costs. We believe essential developer tools should be accessible to everyone.
Is my data safe and private?
Your data is 100% safe because it never leaves your browser. All tools run entirely on the client-side using JavaScript. We don't have servers that process or store your information. Your input data stays on your device.
Do I need to create an account?
No account needed! You can access and use all tools immediately without any registration. Simply visit the tool you need and start using it right away.
Can I use these tools offline?
Most tools work offline once the page is loaded since they run in your browser. However, you'll need an initial internet connection to load the tool pages. Tools that fetch external data (like IP info or weather) require an active connection.
Do you support mobile devices?
Yes! All our tools are fully responsive and work perfectly on smartphones, tablets, and desktop computers. The interfaces adapt to your screen size for optimal usability.
How often are new tools added?
We regularly expand our collection based on user feedback and developer needs. Follow our updates or bookmark the site to discover new tools as they're released.