Free Online Developer Tools
Zero-server developer utilities engineered for speed, clean code formatting, and confidential API payload debugging.
Available Tools
Select a tool below to process files right now directly in your browser.
Built for Confidential Developer Workflows
Utilby is built around a modern, privacy-first architecture that sets it apart from traditional online converter websites.
Never Leak Internal API Payloads
Never paste proprietary client JSON, internal tokens, or user payloads into sketchy server-based beautifiers. Utilby formats data 100% locally in browser memory.
Instant Syntax Debugging
Find missing commas, unescaped quotes, or mismatched braces instantly with exact line numbers and helpful syntax hints.
High-Resolution Vector QR Codes
Generate clean QR codes for links, Wi-Fi networks, and contact vCards with sharp vector SVG export suitable for print and digital design.
How to Use Developer Tools
Get your tasks done in four simple steps without registering or waiting in queue.
Select Developer Tool
Choose JSON Formatter & Validator for code debugging, or QR Code Generator for scan codes.
Paste Payload or Content
Paste your raw JSON code or enter the destination URL / Wi-Fi credentials.
Format or Customize
Choose indent spacing (2 or 4 spaces), minify code, or pick custom QR code styling and error correction levels.
Copy or Download
Copy cleaned JSON directly or download your vector SVG / high-resolution PNG QR image.
Frequently Asked Questions
Common questions about our developer tools and browser-based privacy guarantees.
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