Modern developer utilities and financial tools for web and data workflows
UTLZ.FYI provides a curated collection of lightweight, privacy-friendly developer utilities and financial tools designed to simplify your workflow. Every tool runs entirely in your browser — no data ever leaves your device, ensuring complete privacy and security.
All processing happens locally in your browser
Optimized for speed and performance
Each tool excels at its specific task
In a world of complex, bloated software, UTLZ.FYI stands apart by focusing on simplicity and effectiveness. Our tools are built with modern web technologies, ensuring they work seamlessly across all devices and platforms.
Whether you're a solo developer debugging APIs, a team lead reviewing data structures, or a student learning web development, our tools provide the reliability and performance you need without compromising your privacy.
Explore our growing collection of developer utilities and financial tools, each designed to solve specific challenges in web development, data processing, and document management.
Advanced JSON formatting and validation tool with syntax highlighting, error detection, and interactive tree view. Essential for API development, debugging, and data analysis.
Complete Base64 encoding and decoding solution with file support, URL-safe variants, and data URI generation. Perfect for web development and data transmission.
Instantly decode and explore CBOR (Concise Binary Object Representation) data structures. Designed for IoT development and binary data analysis.
Powerful PDF manipulation and processing tool with split, rotate, convert, reorder, and merge capabilities. Perfect for document management and workflow automation.
Snowball and avalanche debt payoff calculator to optimize your debt elimination strategy. Compare payment methods and see how much interest you'll save.
UTLZ.FYI is the main home for guides, learning resources, policies, and site information. Interactive tools run on focused subdomains such as json.utlz.fyi, base64.utlz.fyi, and cbor.utlz.fyi so each tool can stay fast and purpose-built.
Documentation, Learn DSA lessons, privacy policy, terms, and contact information.
Dedicated browser-based utilities for JSON, Base64, CBOR, PDFs, and payoff calculations.
DSA tutorials, practice links, and visualizers that do not require accounts or signups.
We're continuously expanding our tool collection based on developer needs and community feedback. Here's what's in development:
Advanced XML processing with XPath support, validation, and formatting options.
Multiple hashing algorithms including MD5, SHA-256, and file hashing with progress tracking.
Complete URL encoding with component-specific options and query parameter handling.
Color conversion, palettes, contrast checking, and accessibility compliance tools.
REST API testing with authentication, headers, and response analysis.
JavaScript, CSS, and HTML minification with source map generation.
We believe your code and data should remain yours. Our tools never collect, store, or transmit your information. Everything runs locally in your browser.
Each tool focuses on doing one thing exceptionally well. We resist feature bloat and prioritize intuitive, efficient user experiences.
We commit to open sourcing many of our tools and maintaining transparent development practices. Community feedback drives our roadmap.
Slow tools waste your time. We optimize every aspect of our applications for speed, from efficient algorithms to minimal network requests.
Have feedback, feature requests, or questions about our tools? We'd love to hear from you. Our community of developers helps shape the future of UTLZ.FYI.