A growing collection of free, fast, and secure developer tools — built for developers who value their time and privacy.
130+
Developer Tools
7
Categories
100%
Client-Side
Free
Cost
Developers spend too much time searching for simple utilities — a JSON formatter here, a Base64 encoder there, a regex tester somewhere else. Each tool lives on a different website with its own ads, sign-up walls, and data-privacy concerns. We built Devkitr to solve this by bringing all essential developer tools under one roof.
Our goal is straightforward: provide the most comprehensive, well-crafted set of browser-based developer tools available anywhere — completely free, with no accounts, no data collection, and no compromises on quality. Every tool is designed with developer experience in mind, from the clean interface to keyboard shortcuts and instant feedback.
Every tool on Devkitr processes data entirely in your browser. Your code, JSON, tokens, passwords, and other sensitive data never leave your device. There are no server-side API calls for tool processing — it's all JavaScript running locally in your browser tab.
This isn't just a marketing claim — it's a fundamental architectural decision baked into how Devkitr works. Our tools use the Web Crypto API for hashing, TextEncoder/TextDecoder for encoding, and pure JavaScript for parsing and formatting. You can verify this yourself: open your browser's Network tab while using any tool and you'll see zero data sent to any server.
All processing happens in your browser's JavaScript engine. Zero network requests for tool operations.
We don't use cookies, localStorage, or any mechanism to persist your tool input data.
Open your browser DevTools and confirm — no data is ever sent during tool usage.
Devkitr is built with modern web technologies: Next.js for server-side rendering and SEO, React for interactive tool interfaces, TypeScript for type safety, and Tailwind CSS for responsive design. Each tool is a self-contained React component with its own input handling, processing logic, and output display.
When you visit a tool page, the tool code is loaded as part of the page bundle. When you click "Format," "Convert," or "Generate," the processing runs in your browser's JavaScript engine. Results appear instantly because there's no server round trip. For cryptographic operations like hashing and HMAC, we use the browser's built-in Web Crypto API for performance and security.
Devkitr covers the full spectrum of developer utility needs, organized into 7 categories with 130+ tools. Each tool is purpose-built for a specific task, with thoughtful input handling and clear output formatting.
Format, validate, compare, and convert JSON data with powerful online utilities.
Test APIs, inspect HTTP headers, parse user agents, and debug web requests.
Base64, JWT, SHA256, MD5, bcrypt, and other encoding and hashing utilities.
Beautify and format SQL, HTML, CSS, JavaScript, XML, and YAML code instantly.
Convert between CSV, JSON, XML, YAML, timestamps, and color codes seamlessly.
Generate UUIDs, passwords, lorem ipsum, slugs, QR codes, and CSS gradients.
General-purpose developer utilities including regex tester, diff checker, and more.
Devkitr is designed for anyone who writes, reviews, or works with code. Our tools are used across the full software development lifecycle — from initial development to code review, debugging, and deployment.
Format HTML/CSS/JS, generate CSS gradients, convert color codes, create SVG assets, and build responsive layouts faster with tools designed for frontend workflows.
Decode JWTs, test regex patterns, format SQL queries, generate UUIDs, hash strings, and debug API responses — all without leaving the browser.
Generate Docker Compose files, create .gitignore configs, calculate chmod permissions, parse cron expressions, and build CI/CD configuration files.
Explore encoding algorithms, understand hashing, experiment with data formats, and learn by doing — with instant visual feedback and no setup required.
Beyond tools, Devkitr publishes in-depth technical guides and tutorials on our developer blog. Our articles cover topics like JSON best practices, JWT security, SQL formatting, regular expressions, password hashing, and more — each written to help developers understand the "why" behind the tools they use every day.
Every article is original, research-backed, and written with practical code examples. We don't rewrite documentation — we provide real-world context, common pitfalls, and actionable guidance that you can apply immediately.
Devkitr is actively maintained and growing. We regularly add new tools based on developer feedback and industry trends. Our roadmap includes expanding into areas like API testing, database schema tools, infrastructure-as-code generators, and more specialized utilities for modern frameworks.
Have a tool suggestion? We'd love to hear from you. Send us a message and tell us what would make your workflow easier.
Devkitr is built and maintained by a small team of developers who use these tools every day. We believe developer tools should be fast, free, and respectful of your privacy. Every design choice — from the dark theme that's easy on your eyes during late-night coding sessions, to the instant processing that doesn't break your flow — is made with developers in mind.
We're constantly improving existing tools and adding new ones. If you find Devkitr useful, the best way to support us is to share it with other developers and let us know how we can make it better.