CORS Unlocker
Development tool for testing APIs by modifying CORS headers. For localhost and staging environments only.
As of June 2026, CORS Unlocker has 4 users in the Developer Tools category.
Usersdown 50.0 percent−50.0%
4
4
Ratingno change0%
—
— reviews
Reviewsno change0%
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Version
1.0.2
Manifest V3
History
6 snapshotsTracking since Apr 1, 2026.
View as table
| Date | Users | Rating | Reviews | Version |
|---|---|---|---|---|
| Apr 1, 2026 | 8 | — | — | 1.0.2 |
| Apr 8, 2026 | 6 | — | — | 1.0.2 |
| Apr 19, 2026 | 5 | — | — | 1.0.2 |
| Apr 25, 2026 | 4 | — | — | 1.0.2 |
| May 10, 2026 | 6 | — | — | 1.0.2 |
| Jun 5, 2026 | 5 | — | — | 1.0.2 |
| Now | 4 | — | — | 1.0.2 |
Permissions & access
- Permissions
- declarativeNetRequestdeclarativeNetRequestWithHostAccessdeclarativeNetRequestFeedbackstoragetabsalarms
- Host access
- <all_urls>
Screenshots
About
CORS Unlocker is a developer-focused Chrome extension designed to help you test APIs and frontend integrations by temporarily bypassing Cross-Origin Resource Sharing (CORS) restrictions during development. The extension works locally on your browser and only modifies request headers for the websites you explicitly enable. It does not collect, store, or transmit any personal or sensitive data. Key Features - Toggle CORS rules on/off with a single click - Add custom domains to enable CORS for specific sites - Automatically injects required development headers - Fully transparent – all rules are visible and editable - No ads, no tracking, no background data collection Developed For - Frontend developers - API testers - Web app debugging - Localhost projects - Development environments ⚠️ Important: This extension is intended only for development and debugging purposes. It should not be used on production websites or for bypassing security protections.
Technical
- Version
- 1.0.2
- Manifest
- V3
- Size
- 324KiB
- Min Chrome
- 88
- Languages
- 1
- Featured
- No
Metadata
- ID
- iagicjflikagfomphkcgpimpfmhjgmbh
- Developer ID
- u2533a5233fe6082d4447dbe40f72abfc
- Developer Email
- [email protected]
- Created
- Nov 29, 2025
- Last Updated (Store)
- Jan 31, 2026
- Last Scraped
- Jun 5, 2026
- Website
- —
- Support URL
- —
- Privacy Policy
- —
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Data sourced from the Chrome Web Store · last verified Jun 5, 2026.