Essential DeveloperUtilities & Tools
Fast, free, and privacy-focused tools for developers. All processing happens in your browser—no data leaves your device.
100% Client-Side
Privacy First
Always Free
Popular
JSON Formatter
Format, validate, and beautify JSON data instantly
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Popular
Base64 Encoder
Encode and decode Base64 strings with ease
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Popular
UUID Generator
Generate unique identifiers (v4) instantly
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Hash Generator
Generate MD5, SHA-1, SHA-256 hashes
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Regex Tester
Test and debug regular expressions live
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URL Encoder
Encode and decode URL components
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JWT Decoder
Decode and verify JSON Web Tokens
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Timestamp Converter
Convert Unix timestamps to human dates
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Why Choose DevUtil?
Privacy First
All processing happens locally in your browser. Your data never touches our servers.
Lightning Fast
Instant results with no server roundtrips. Tools load and process data in milliseconds.
Always Free
No subscriptions, no hidden fees, no account required. Use all tools completely free.