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CORS Doctor

5.0(

1 rating

)
ExtensionDeveloper Tools4 users
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Overview

Offline CORS error analyzer — diagnoses cross-origin issues with actionable fixes

CORS Doctor is a powerful, fully offline DevTools extension that instantly analyzes and explains CORS (Cross-Origin Resource Sharing) errors directly inside your browser. Instead of wasting time searching for vague error messages like “No ‘Access-Control-Allow-Origin’ header present,” CORS Doctor inspects failed network requests, evaluates request and response headers using a deterministic rule engine, and clearly identifies the exact root cause. It provides accurate explanations along with copy-ready fixes for popular backend frameworks with Java, Python, JavaScript Backends and Nginx as well. With zero AI, no cloud calls, and no data tracking, the extension works entirely on your machine—making it secure, fast, and enterprise-friendly. Designed for frontend developers, backend engineers, and DevOps teams, CORS Doctor helps you diagnose, understand, and fix CORS issues in seconds instead of minutes.

5 out of 51 rating

Learn more about results and reviews.

Details

  • Version
    1.0.0
  • Updated
    March 5, 2026
  • Offered by
    karthik.dasari2001
  • Size
    65.09KiB
  • Languages
    English (United States)
  • Developer
    Karthik Dasari
    65-3-567, new ex-servicemen colony near community hall Visakhapatnam, Andhra Pradesh 530011 IN
    Email
    karthik.dasari2001@gmail.com
    Phone
    +91 77023 29668
  • Trader
    This developer has identified itself as a trader per the definition from the European Union and committed to only offer products or services that comply with EU laws.

Privacy

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The developer has disclosed that it will not collect or use your data.

This developer declares that your data is

  • Not being sold to third parties, outside of the approved use cases
  • Not being used or transferred for purposes that are unrelated to the item's core functionality
  • Not being used or transferred to determine creditworthiness or for lending purposes

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