Our API Response Checker is a free online tool designed for developers, testers, and learners who want to analyze API outputs quickly. With this tool, you can enter any API URL and instantly fetch results in a clean, formatted view. Whether the response is JSON or XML, the data is automatically organized so you can focus on what matters.
Ready.
API Response
Response body will appear here after a successful fetch. Tip: Direct fetch relies on browser security rules (CORS). If it fails, enable **Use Server Proxy**.
The proxy only allows **GET** requests and is protected by private IP checks.
The proxy only allows **GET** requests and is protected by private IP checks.
API Response Checker – Free Online API Visualizer
The following is complete guide about how to use the API Visualizer online easily.
🔹 How to Use the API Response Visualizer
- Enter the API endpoint URL into the input box.
- Click Fetch Response.
- The tool will display the data in a structured format.
- Errors such as invalid endpoints or CORS restrictions are highlighted.
It’s that simple! No extra coding or third-party software needed.
Why Use Our API Response Checker?
- Time-saving: View responses without building custom scripts.
- Readable formatting: JSON and XML are styled for better understanding.
- Learning aid: Great for students and beginners exploring APIs.
- Debugging tool: Detects and highlights API errors instantly.
- Free and online: Accessible anytime, anywhere.
🔹 Related Tools
You might also like our Schema Markup Generator and upcoming Regex Generator tool for developers.