Video guides
See the tools in action, in under a minute each. Every tool runs in your browser: no login, nothing uploaded.
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Lost Your Phone? Get Your 2FA Code From the Secret Key
Open 2FA Live Code & TOTP Generator →Node.js 26 LTS Is Here: What Breaks in Your App?
Open Node.js 26 Upgrade Checker →Your MCP Server Won't Start? Fix the Config in Seconds
Open MCP Config Generator & Validator →When Does Your SSL Certificate Expire? Check in One Paste
Open X.509 / PEM Certificate Decoder →Paste Anything, and Ninja Tells You What It Is
Open Ask Ninja →Convert JSON to a Zod Schema in 5 Seconds
Open JSON to Zod Schema Generator →
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