Advanced API Tester Pro

A high-performance, lightweight Postman alternative in your browser.

Supercharge your API development workflow with Advanced API Tester Pro – the most powerful and lightweight API client built directly for your browser. Designed for developers who need speed and simplicity without sacrificing professional features. Say goodbye to heavy desktop apps and hello to a seamless, high-performance workspace. 🚀 KEY FEATURES: - Unified Smart Input: Paste raw cURL commands or standard URLs into a single field. - Postman Collection Support: Import your existing Postman collections (v2.0/v2.1) with a single click. - Environment Variables: Use {{base_url}} or other variables across URLs, Headers, and Bodies with real-time auto-suggestions. - Professional Body Editor: Features JSON beautification and syntax-focused design. - Persistent Workspace: Your request history and environment variables are automatically saved and synced locally. - Premium UI/UX: High-contrast Dark Mode with Inter and JetBrains Mono typography for a superior developer experience. Perfect for debugging REST APIs, testing webhooks, and managing complex development environments. No account required. No data tracking. Just pure productivity. Stop context-switching between your IDE, browser, and desktop apps. Test faster, build better. --- ADDITIONAL INFO --- Category: Developer Tools Language: English (United States) Mature Content: No Permissions: storage, host_permissions (all_urls)