Developer Utilities
Everyday tools that respect your privacy.
A curated set of everyday developer utilities that run entirely client-side. Debug JWTs, compare text diffs, convert SQL to Prisma schemas, describe cron expressions in plain English, generate Dockerfiles, and more — all without sending a single byte to a server.
16 free tools available — all run 100% in your browser.
OpenAPI to Express
Transform OpenAPI 3.x specifications into production-ready Express.js route handlers with validation middleware. Fully client-side processing.
Diff Viewer
Compare code snippets, configuration files, or plain text side-by-side with syntax-highlighted inline and unified diffs. Nothing leaves your browser.
JWT Debugger
Decode, inspect, and validate JWT token headers and payloads without sending credentials to any server. Fully offline, privacy-first debugging.
Regex Tester
Write, test, and debug JavaScript regular expressions with real-time match highlighting and capture group inspection. Fully local execution.
SVG to JSX
Convert raw SVG markup into clean React JSX or TSX components with automatic attribute conversion and prop forwarding. Processed locally, nothing uploaded.
OpenAPI Mock
Generate a zero-dependency mock API server from any OpenAPI 3.x specification with realistic example responses. Runs entirely inside your browser.
Cron Descriptor
Translate cron expressions into plain English descriptions and preview upcoming scheduled run times. Offline-first processing with zero telemetry.
GraphQL to tRPC
Convert GraphQL type definitions into fully typed tRPC router procedures with auto-generated Zod input validation. Client-side only, zero uploads.
Dockerfile Generator
Generate optimized multi-stage Dockerfiles for Node.js, Next.js, and Astro projects with security best practices and health checks built in.
tRPC to OpenAPI
Instantly convert tRPC routers and Zod input/output schemas into standard OpenAPI (Swagger) 3.1.0 specifications for public API documentation.
TypeScript to Zod
Instantly convert TypeScript interfaces and types into Zod validation schemas. 100% client-side execution for total privacy.
Env to Zod
Convert .env files into strict, type-safe Zod validation schemas for Next.js and Node.js. Infers URLs, emails, booleans, and numbers automatically.
Meta Tag Previewer
Visually preview and generate Open Graph, Twitter, and standard HTML meta tags. Instantly copy raw HTML or Next.js metadata objects.
TypeScript to JSON Schema
Convert TypeScript interfaces and types into standard JSON Schema. 100% offline client-side parsing.
SQL to Prisma Schema
Convert SQL CREATE TABLE statements into Prisma schema models. 100% offline client-side parsing.
GraphQL to Zod
Convert GraphQL type definitions into type-safe Zod validation schemas. 100% offline client-side parsing.