How to fix missing x frame options on Wix

Steps for Wix

1. Wix does not provide direct access to HTTP response headers from the admin dashboard — you cannot set X-Frame-Options natively on Wix-hosted sites.
2. For Wix sites, the best available mitigation is to use Wix's built-in Velo (Wix Code) to add a Content-Security-Policy meta tag equivalent in your site pages, though note that HTTP headers are more reliable than meta tags for framing protection.
3. Go to your Wix Editor → click 'Dev Mode' (or Velo) → open the site's masterPage.js → use wixWindow or HTTP functions to add headers if supported by your Wix plan.
4. Alternatively, place your Wix site behind Cloudflare (update your domain's nameservers to Cloudflare) and add the X-Frame-Options header via Cloudflare Transform Rules as described in the BigCommerce steps.
5. Contact Wix support to confirm the current platform capability for custom HTTP headers on your specific plan.

What is missing x frame options?

The X-Frame-Options header is a security instruction your web server sends to browsers telling them whether your pages are allowed to be loaded inside an iframe (an invisible "frame" embedded in another website). When this header is missing, any website in the world can silently embed your store inside their page. The two safe values are DENY (no framing at all) and SAMEORIGIN (only your own domain can frame your pages). Most stores should use SAMEORIGIN unless you have no legitimate need to embed your own pages in iframes, in which case DENY is even stronger.

Without X-Frame-Options, attackers can use a technique called "clickjacking" — they overlay your store's checkout or login page inside an invisible iframe on a malicious site, tricking shoppers into clicking buttons they can't see. This can lead to unauthorized purchases, stolen account credentials, or fraudulent transactions, directly costing you revenue and eroding customer trust. Search engines and security scanners flag this missing header as a vulnerability under OWASP A05:2021 (Security Misconfiguration), which can affect your site's security rating and enterprise buyer trust. Many payment card industry (PCI DSS) compliance checklists also require it, so missing it can jeopardize your ability to process card payments.

See the complete Missing x frame options guide for every platform and the full background.