What is the ssr-caching cookie?
ssr-caching is an HTTP cookie used by Wix's infrastructure on websites created and hosted on this platform. It appears automatically, without any visitor action, as soon as a Wix-built page is loaded.
It is not set directly by the site owner but by Wix's servers, which generate the page content through server-side rendering (SSR) and need to coordinate fast delivery of the rendered version to the visitor.
What data it stores
The cookie stores a technical identifier used internally by Wix for server-level caching. The exact value format is not publicly documented by Wix and may vary; based on publicly available information, it does not contain personal identifying data such as a name or email address.
The value is sent to Wix's servers, which use it to decide whether the page can be served from an already rendered cached version or needs to be generated again.
What it is used for
The cookie's purpose is purely technical: it optimizes loading speed for pages built with Wix by helping the server quickly determine whether it can reuse a recently rendered version of the page or needs to generate it again.
For the site administrator, this translates into faster load times for visitors, with no additional configuration required — it is part of Wix's platform infrastructure.
Does it require consent?
ssr-caching is classified as a strictly necessary cookie, since it supports basic page delivery rather than visitor tracking, marketing, or statistics purposes.
- Under Article 4(5) of Law 506/2004 (transposing the ePrivacy Directive) and ANSPDCP guidance, strictly necessary cookies do not require prior consent.
- The site administrator should still disclose it in the cookie policy, mentioning the provider (Wix), its purpose, and approximate duration.
- It does not need to be shown as a toggleable option in the consent banner, only listed for transparency.
How to block or delete ssr-caching
Visitors can delete or block this cookie from their browser settings (for example, the "Privacy and security" section in Chrome, Firefox, or Edge), but blocking it may affect page loading speed or correct functioning, since it is part of Wix's core platform mechanism.
Because it is strictly necessary, a CMP like CookieFix does not block it by default before consent, but lists it transparently in the cookie declaration so visitors know exactly which technical cookies the site uses, even though they run without requiring prior consent.
Frequently asked questions
No, it is a purely technical cookie used by Wix to optimize page delivery and is not used for tracking visitor behavior or marketing.
No, since it is strictly necessary for the site's technical operation, it does not require prior consent under Law 506/2004, but it should be mentioned in the cookie policy.
Its typical duration is very short, around 1 minute, since it is only used for immediate server-side operations when a page loads.
The site will likely still work, but Wix's server-side caching mechanism may become less efficient, which could slightly increase page load times.