🛠️ Free Private Developer Tools
Format, encode, decode, and generate code directly in your browser. No uploads, no servers, no tracking. Your code stays 100% private.
Available Developer Tools (30)
Why Developers Love These Tools
Safe for Secrets
JWT tokens, API keys, and sensitive code never leave your browser. Perfect for production debugging.
Instant Results
No network latency. Format, encode, and transform data instantly without waiting for server responses.
Works Anywhere
Use these tools in air-gapped environments, VPNs, or restricted networks. No external dependencies.
Tool Categories
📝 Formatters
JSON, JavaScript, HTML, CSS, YAML, SQL formatters with customizable styling.
🔄 Encoders/Decoders
Base64, URL encoding, HTML entities, string escaping, and more.
🔑 Generators
UUID, GUID, ULID, hash, password, and other secure generators.
🔄 Converters
XML to JSON, JSON to CSV, JSON to YAML, and format converters.
🧪 Testers
Regex tester, JWT decoder, diff checker for code comparison.
⏰ Utilities
Unix timestamp converter, cron generator, lorem ipsum generator.
Frequently Asked Questions
Is it safe to paste JWT tokens or API keys?
Yes, absolutely safe. All decoding and processing happens 100% in your browser. Your tokens never leave your device - we have no backend servers that see your data.
Can I use these tools for production debugging?
Yes, these tools are perfect for production debugging because your sensitive data stays local. Many developers prefer these tools over online alternatives for this reason.
Do these tools work in air-gapped environments?
Once loaded, all tools work completely offline. You can even save the page locally and use it without any network connection.
What programming languages do the formatters support?
We support JSON, JavaScript, HTML, CSS, YAML, and SQL formatting. Each formatter has customizable indentation and styling options.