Welcome to Boring Developer Tools
Select a tool from the sidebar to get started, or search for a tool below.
JWT Decoder
Decode and validate JSON Web Tokens instantly
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Base64 Converter
Encode and decode Base64 strings
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URL Decoder
Parse and decode URLs with query parameters
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JSON/YAML Converter
Convert between JSON and YAML formats
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Cron Evaluator
Test and validate cron expressions
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Regex Highlighter
Test regex patterns with highlighting
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Domain Checker
Check domain availability across TLDs
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JSON to TypeScript
Generate TypeScript interfaces from JSON
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JavaScript Sandbox
Run and test JavaScript code safely
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CSV to JSON
Convert CSV data to JSON format
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JSON to CSV
Convert JSON arrays to CSV format
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CSV to Markdown
Convert CSV data to Markdown tables
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Image to Base64
Convert images to Base64 encoded strings
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Dotenv to JavaScript
Convert .env files to JavaScript objects
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Dotenv to Source File
Convert .env to shell source files
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Multiline Converter
Convert between single-line and multi-line text
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CM/MM to Pixels
Convert measurements to pixels with DPI and paper size templates
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JSON Path Parser
Extract data from JSON using path expressions
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Markdown Preview
Preview Markdown with live rendering
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Tools Available
🛠️ 19
Fully tested and ready to use
Privacy Focused
🔒 100%
All processing happens locally
Open Source
💚 MIT
Free to use and modify