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PowerUtils
2026-06-15•1 分鐘閱讀

如何線上測試 API

學習如何使用 PowerUtils 免費 API 測試工具線上測試 REST API。發送 GET、POST、PUT、DELETE 請求並檢查回應，無需安裝任何軟體。

apitestingrestdevelopment

Why Test APIs Online?



API testing is essential for:
  • Debugging API integrations

  • Testing endpoints during development

  • Verifying API responses

  • Learning how APIs work


    • How to Use the API Tester



    Step 1: Enter API URL



    Visit the API Tester and input:
  • URL: The API endpoint you want to test

  • Method: GET, POST, PUT, DELETE, PATCH


    • Step 2: Add Headers and Body



    Configure your request:
  • Headers: Content-Type, Authorization, etc.

  • Body: JSON, form data, or raw content

  • Parameters: Query parameters for GET requests


    • Step 3: Send and Analyze



    Click send to see:
  • Status code and response time

  • Response headers

  • Response body (formatted JSON)

  • Error messages if any


    • API Testing Tips



  • Start Simple: Test with GET requests first

  • Check Status Codes: 200=OK, 404=Not Found, 500=Server Error

  • Use Proper Headers: Content-Type: application/json for JSON APIs

  • Validate Responses: Check response structure matches documentation


    • Related Tools



  • JSON Formatter - Format API responses

  • Base64 Encoder - Encode authentication tokens

  • Hash Generator - Generate API signatures


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