SyntaxMaster.dev
The dev toolbox the internet forgot to modernize — until now
What is SyntaxMaster.dev?
Juggling 8 different sites to format JSON, decode a JWT, diff configs and run a regex? SyntaxMaster does all of it. Your formatter looks like 2009? SyntaxMaster is dark mode, mobile-ready, designed for today. Nervous pasting a JWT into a random online tool? All processing runs in your browser — nothing uploads unless you share. Need TypeScript from that API response? Paste JSON, get TS, Go, Python, Java, Kotlin, Rust, PHP or Swift. Syntax-aware diff for 13 languages. No account. No paywall.
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