CORS Unblock - Eliminate CORS Errors in Firefox
Add-on stats
Ranking
Add-on summary
This extension provides control over XMLHttpRequest and fetch methods by providing custom "access-control-allow-origin" and "access-control-allow-methods" headers to every requests that the browser receives. A user can toggle the extension on and off from the toolbar button. To modify how these headers are altered, use the right-click context menu items. You can customize what method are allowed. The default option is to allow 'GET', 'PUT', 'POST', 'DELETE', 'HEAD', 'OPTIONS', 'PATCH' methods. You can also ask the extension not to overwrite these headers when the server already fills them.
Preview: https://www.youtube.com/watch?v=8berLeTjKDM
Default values: Access-Control-Allow-Origin: request initiator or '' Access-Control-Allow-Methods: 'GET, PUT, POST, DELETE, HEAD, OPTIONS, PATCH, PROPFIND, PROPPATCH, MKCOL, COPY, MOVE, LOCK' Access-Control-Allow-Methods: request initiator or '' Access-Control-Allow-Credentials: 'true' Access-Control-Expose-Headers: request initiator or '*'
To report bugs please use: https://github.com/balvin-perrie/Access-Control-Allow-Origin---Unblock
Change Log:
See moreUser reviews
- Works as expected for some users
- Useful for frontend developers
- Ability to modify 'Access-Control-Expose-Headers'
- Does not work for multiple versions of Firefox
- Inconsistent performance on certain sites
- Lack of a whitelisting option for specific sites
- Does not work
- Whitelist option is desired
- Works well for some users
User reviews
Add-on safety
Risk impact
CORS Unblock requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.
Risk likelihood
CORS Unblock has earned a fairly good reputation and likely can be trusted.