Developer Tools & Utilities
21 free tools and workflows. Browser-based processing, no account required.
JWT Decoder & Inspector
Understand a token and reproduce authentication edge cases.
Decode, inspect, and validate JSON Web Tokens securely in your browser. Includes RFC claim hints and auth chaos simulation.
JSON to TS & Zod
Instantly convert JSON API responses into strict TypeScript interfaces and Zod schemas.
Convert JSON into TypeScript types and Zod schemas in your browser. Handle nested objects, mixed arrays, and optional fields; copy the generated code.
Mock Data Generator
Find UI and validation bugs with realistic and deliberately messy data.
Generate users, orders, invoices, and difficult strings. Adjust the amount of messy data, build a custom schema, and export JSON or CSV locally.
AI Background Remover
Remove backgrounds from images using local machine learning models. Zero uploads, unlimited use.
Image to PDF Converter
Turn JPEG and PNG images into a single PDF in selection order. No file uploads, account, or watermark.
Image Compressor & WebP Studio
Reduce image file size in your browser. Choose JPEG, PNG, or WebP, set a target KB budget, and preview the quality and dimensions before downloading.
Image Resizer & Artboard Studio
Resize images for social media, avatars, and web use with artboard padding and aspect ratio control.
Merge PDF
Combine multiple PDF files into one document entirely locally. No uploads, no watermarks.
Compress PDF
Optimize PDF object streams and clear document metadata locally. Compare input and output sizes; embedded images are not downsampled.
Passport Photo Maker
Resize a photo to chosen pixel dimensions and compress it toward a KB limit. Preview the actual output size before using it in a form.
HEIC to JPG Converter
Convert iPhone HEIC photos to widely supported JPG format entirely locally in your browser. Fast and private.
Image Metadata Stripper
Drop an image to reveal hidden GPS coordinates and camera specs, then instantly strip all metadata for safe sharing.
PNG to WebP Converter
Convert PNG or JPEG to WebP in your browser. WebP output is preselected; preview the result and choose an optional file-size budget.
Strip GPS & EXIF from Photo
Inspect and strip GPS latitude/longitude, camera device info, and private EXIF data from JPEG/PNG images completely offline.
JSON to Zod Schema Generator
Paste JSON to generate a Zod validation schema locally. Preview Zod output first, infer nested objects and mixed arrays, and copy the schema into your app.
Public APIs Registry
Searchable registry of 3,000+ free public APIs for software and web development. Filter by CORS, Auth & HTTPS.
AI MCP & Tools Registry
A searchable collective list of free open-source MCP servers for Claude Desktop, Cursor, and custom AI agents.
Social Share Preview & OG Checker
Test how your website looks when shared on Twitter/X, Slack, Discord, LinkedIn, Facebook & WhatsApp.
Custom Schema Builder
Visually compose custom dirty data schemas with 13+ field types and per-column chaos sliders. No code required.
API Chaos Templates & Mock Vault
Real-world response fixtures for Stripe, Supabase, Google SSO, GitHub OAuth, and 13+ more APIs.
Encrypted Collaborative Editor
Edit code together with Yjs and encrypted WebSocket sync. Document updates are encrypted in the browser, relayed and stored by Cloudflare, and cached locally.