Free Developer Tools
Free tools for MERN stack and Indian developers. Everything runs in your browser, so your code and data never leave your computer.
JSON to Mongoose Schema Converter
Paste a JSON document and get a ready-to-use Mongoose schema and model, with nested schemas, ObjectId refs and timestamps.
JSON to Zod Schema Generator
Turn any JSON into a Zod schema plus its TypeScript type, ready to validate API responses and form data.
JSON to TypeScript Interface Generator
Generate clean TypeScript interfaces from JSON in one paste, including nested objects, arrays and optional fields.
SQL to MongoDB Query Converter
Convert SQL queries to MongoDB find(), aggregate(), updateMany() and more, for mongosh or Mongoose.
PAN, Aadhaar, GST and IFSC Validator
Check PAN, Aadhaar, GSTIN, IFSC, PIN code, mobile and UPI formats, with real checksum tests and copy-ready regex.
MongoDB Connection String Checker and Builder
Find what’s wrong with a MongoDB URI, from unencoded passwords to SRV ports, or build a correct one for Atlas or a local server.
MongoDB ObjectId to Timestamp Converter
See when any MongoDB document was created from its _id, or turn a date into an ObjectId for fast range queries.
llms.txt Generator
Create an llms.txt file so AI assistants can read and cite your documentation.