ignore-x-frame-options is a Chrome extension developed by hotari. It is a free tool that allows users to bypass the x-frame-options and content-security-policy settings in HTTP request headers. This enables web pages to include external pages in iframes, even when those pages have set x-frame-options to SAMEORIGIN or DENY.

Many web pages use x-frame-options to prevent themselves from being loaded in iframes on other websites. While this is a security measure, it can sometimes be inconvenient when users want to view external pages within iframes. ignore-x-frame-options solves this problem by removing the x-frame-options restriction.

However, it is important to note that using ignore-x-frame-options decreases the security of your browsing experience. By allowing pages to access external pages in iframes, you may be vulnerable to clickjacking attacks. Therefore, it is recommended to use ignore-x-frame-options only for development purposes, rather than for regular browsing.