Fast, browser-based developer tools.
Everything runs locally — nothing leaves your device.
7
Tools
0
Installs
100%
Local
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{ }→
JSON Formatter
Pretty-print and validate JSON payloads instantly. Monaco-powered editor, shareable via URL.
* *→
Cron Generator
Parse any cron expression and preview the next 5 scheduled execution times instantly.
JWT→
JWT Decoder
Decode header, payload, and check token expiry without needing the secret key.
/re/→
Regex Tester
Live match highlighting across test strings with flag toggles and capture group table.
UTC→
Timestamp Converter
Convert Unix epochs to human dates and back. Live clock. Auto-detects seconds vs ms.
SHA→
Hash Generator
Generate SHA-1, SHA-256, SHA-384, SHA-512 hashes from text or any file. Output as hex or Base64.
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Mermaid Diagram
Render flowcharts, sequence diagrams, ER diagrams, class diagrams, and more from Mermaid syntax.
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