All developer tools

48 tools, grouped by what you are working on. Press ⌘K on any page to jump straight to one.

JSON & Schema

Validate, convert, and type-safe your data.

Pydantic to Zod Convert Python Pydantic models and FastAPI JSON schemas into TypeScript Zod validation schemas. Client-side processing, zero data transmission. JSON to Zod Paste any JSON object and infer a complete Zod validation schema with nested types, optionals, and arrays. No server round-trips — 100% in-browser. JSON Schema to Zod Convert JSON Schema definitions into type-safe Zod validation schemas. Supports nested objects, arrays, and complex constraints with zero data transmission. OpenAPI to Zod popular Parse OpenAPI 3.x specifications and instantly generate TypeScript Zod validation schemas for all components. 100% client-side execution. JSON Schema to TypeScript Convert JSON Schema definitions into clean TypeScript interfaces. Handles objects, arrays, enums, and $ref. 100% client-side. JSON Formatter & Beautifier new Beautify or minify JSON with exact error line and column, a tree view, sort keys and one-click repair. Opens files up to 50 MB, all in your browser. JSON to TypeScript new Paste a JSON response and get clean TypeScript interfaces or type aliases, with nested types named for you. Nothing is uploaded. JSON Viewer new Explore JSON as a collapsible tree with search, type badges and child counts. Click any node to copy its JSONPath. Nothing is uploaded. JSON Validator new Validate JSON and list every problem with its line and column: trailing commas, missing commas, single quotes, comments and duplicate keys. JSON Minifier new Minify JSON by removing every optional space and line break, and see exactly how many bytes you saved. Runs locally, even on large files. JSON to CSV Converter new Convert a JSON array to CSV or an Excel-ready file. Nested objects flatten into dot-path columns, with a live table preview. CSV to JSON Converter new Turn CSV or TSV into a JSON array. Detects the delimiter, uses the header row as keys, and infers numbers and booleans. JSON to YAML Converter new Convert JSON to clean, readable YAML for Kubernetes, Docker Compose and CI configs, with 2 or 4 space indentation. YAML to JSON Converter new Convert YAML to JSON with plain-English error messages that point to the line, including tabs and bad indentation. JSON to XML Converter new Convert JSON to well-formed XML with your own root element name, attributes from prefixed keys, and repeated elements for arrays. XML to JSON Converter new Convert XML to JSON with attributes kept under a prefix you choose. Validates the XML first and shows the line of any error. JSON Compare new Compare two JSON documents and list every added, removed and changed path. Key order is ignored, so only real changes show. JSON Escape & Unescape new Escape text or JSON into a JSON string literal, or unescape a stringified JSON value back into readable JSON.

Developer Utilities

Everyday tools that respect your privacy.

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 Translator 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 popular 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. Base64 Encode & Decode new Encode text to Base64 or decode it back, with full UTF-8 support and a URL-safe option. Handy for auth headers and data URIs. URL Encode & Decode new Percent-encode or decode URLs and query strings, and break a full URL into its parameters as an editable table. UUID Generator new Generate UUID v4 and time-ordered v7 IDs in bulk using the browser's secure random source. Copy one or all. Unix Timestamp Converter new Convert Unix epoch seconds or milliseconds to readable dates in UTC and your local time zone, and back again.

Data Conversion

Bridge formats across your stack.

SQL to JSON Schema Parse SQL CREATE TABLE statements into valid JSON Schema definitions with column type mapping, constraints, and nullability. Runs entirely in-browser. Prisma to Zod Transform Prisma schema models into type-safe Zod validation schemas with field constraints, enums, and relation handling. Browser-only processing. SQL to Drizzle ORM Schema new Convert PostgreSQL, MySQL or SQLite CREATE TABLE statements into a typed Drizzle ORM schema with references, composite keys and relations.

CSS & Design

Prototype stunning UI in seconds.

Mesh Gradient Design smooth multi-point mesh gradients with an interactive visual editor and export production-ready CSS. No accounts, no tracking, no data collection. Glassmorphism Build frosted glassmorphism UI components with live preview controls for blur, transparency, and border radius. Copy production-ready CSS directly. Aurora Gradient Generator popular Create animated, pure CSS aurora backgrounds and mesh gradients. Generate Tailwind classes or raw CSS instantly. 100% local, privacy-first execution. Tailwind Shadow Gen popular Visually design multi-layered box shadows and neon glows, then instantly copy the Tailwind CSS v4 arbitrary class. 100% free and offline. Tailwind to CSS Convert Tailwind utility classes into standard Vanilla CSS rulesets and variables. Perfect for migrating components out of Tailwind.

AI Tools

Streamline your LLM workflows.

AI Mock Generator Describe the data you need in plain English and get realistic JSON mock records. Your prompt is sent to OpenAI to generate the result; nothing is stored. Zod to LLM Prompt Convert TypeScript Zod schemas into optimized LLM system prompts. Force Claude, GPT-4, and Gemini to return perfectly structured, predictable JSON.