Developer Tools
Small utilities developers reach for during debugging and scaffolding. No accounts, no request logs of what you paste.
- Format and validate JSON in the browser
- Encode or decode Base64; hash text with common algorithms
- Generate UUIDs and explain cron expressions
Tip: Treat anything you paste as local to this tab. Do not paste production secrets into shared devices.
Tools in this category
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Base64 Encoder
Encode or decode Base64, including a URL-safe variant.
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JSON Formatter
Beautify, minify, and validate JSON in the browser.
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Hash Generator
Create MD5, SHA-1, SHA-256, and SHA-512 hashes from text.
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UUID Generator
Generate RFC 4122 v4 random or v1 time-based UUIDs.
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Cron Parser
Explain a 5-field cron expression and list upcoming runs.
Open toolPut these tools to work
- How to debug JSON, Base64 and cron in your browser
Validate JSON, round-trip Base64 text and check five-field cron syntax using local browser tools.
- How to generate a password you will actually store
Use Web Crypto randomness, pick a length, and put the result in a password manager. What the strength meter is not.
- How to format and validate JSON
Beautify or minify JSON in the browser, read parser errors, and avoid pasting secrets into a random formatter.
- How to convert a meeting time between cities
Search source and destination IANA zones in your browser. Handle skipped local times and choose between repeated daylight-saving occurrences.