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Dev Tools

JSON, JWT, QR codes and everyday developer utilities - how they work and how to use them privately.

All Articles 25 PDF Tips 12 Image Guides 0 Privacy & Security 8 Dev Tools 0 Tool Comparisons 2 AI Insights 3
Dev ToolsNovember 8, 2026·6 min read

How to Create a QR Code for Free: URLs, Wi-Fi, Business Cards and More

To create a QR code online free, open AiLoveKit's QR Generator, choose the type (URL, Wi-Fi, text, email, or phone), enter your data, and download a high-resolution PNG instantly.

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Dev ToolsNovember 5, 2026·5 min read

What Is a JWT Token? How to Decode, Inspect and Understand JSON Web Tokens

A JWT (JSON Web Token) is a compact, URL-safe token format used for authentication and information exchange.

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Dev ToolsNovember 3, 2026·5 min read

How to Format JSON Online: Beautify, Validate and Fix JSON Errors

To format JSON online, paste your JSON into AiLoveKit's JSON Formatter and it instantly beautifies, validates, and highlights syntax - with precise error messages that pinpoint broken lines.

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