Developer Tools Hub
Free online tools for developers.
Popular tools
Most used tools. Find and use them instantly.
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JSON Formatter
Format and beautify JSON with indentation
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Base64 Encode
Encode text to Base64
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JWT Decoder
Decode header, payload, display claims, validate expiration
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Regex Tester
Test regex with live match highlighting
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UUID Generator
Generate UUID v4 (single or multiple)
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Timestamp Converter
Unix timestamp ↔ human-readable date, multiple formats
Categories
Browse by category. Each card links to all tools in that category.
JSON Tools
Validate, format, and transform JSON data
15 toolsEncoding Tools
Encode and decode data in various formats
19 toolsSecurity Tools
JWT, hashing, and password security utilities
11 toolsDatabase Tools
SQL formatting, minification, and result conversion
3 toolsCode Tools
Format and minify HTML, CSS, and JavaScript with syntax highlighting
6 toolsNetwork Tools
IP lookup, DNS, user agent parsing, and HTTP header inspection
9 toolsText Tools
Text manipulation and analysis
9 toolsRandom & UUID
UUID generation, validation, random strings, and passwords
4 toolsTime Tools
Timestamp, epoch, and timezone conversion with real-time updates
4 toolsRegex Tools
Test, generate, and learn regular expressions
3 toolsMarkdown Tools
Convert and preview Markdown
1 toolsData Tools
CSV, TSV, and data format conversion
1 toolsCalculators
Finance, math, health, and date/time calculators
13 tools