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EverydayTab
EverydayTab

Developer Tools

65 tools · all browser-based

Formatters, converters, testers and generators for everyday programming work.

A working developer's toolbox: format and validate JSON, decode JWTs, test regular expressions, validate and explain cron expressions, convert curl commands and docker run lines, prettify SQL, generate TypeScript or Go types from JSON, inspect HTTP status codes and headers, and much more.

Nothing you paste — tokens, connection strings, production payloads — is sent to a server. Each tool runs locally, so it is safe to use with real data during debugging.

Most popular developer tools

JSON17

JWT2

Regex3

Cron4

Docker1

SQL1

YAML, XML & TOML3

HTML5

Hashing1

Encoding4

Network & IP7

Cryptography1

Device & Client3

Reference10

Converters2

Other1

Frequently asked questions

Is it safe to paste a production JWT or API key here?
Yes. Decoding and formatting happen in your browser only; nothing is transmitted. Still, avoid pasting live secrets on shared or public machines.
Do the tools work offline?
Once a tool page has loaded it keeps working without a connection, because all processing is client-side.