Use of vary: X-Bb-Conditions in headers

[shu]

Site link: textcompare.netlify.app

This is a nextjs app.

If you check the headers there is vary: X-Bb-Conditions,Accept-Encoding header present.

I’m trying to find out why and where this header is being sent?

Can it be removed? (this header is messing up caching in cloudflare)

[jasiqli]

@shu

Can it be removed? (this header is messing up caching in cloudflare)

Why are you caching with Cloudflare? Netlify serves sites via a CDN with a cache.

Here are some relevant support guides

[Support Guide] How does Netlify’s CDN handle caching files?

Last reviewed by Netlify Support in July 2025 While the topic of caching effectively is complex, Netlify’s solution is designed to be automatic and worry-free. It shouldn’t require any special configuration or build tools like cache-busting or service workers to deliver an optimal experience. What can go wrong? Some cache-busting techniques can make your site build and load more slowly. Scarier still, modifying Netlify’s default caching settings can break atomic rollbacks and deploys, which a…

[Support Guide] Making the most of Netlify's CDN cache

Last reviewed by Netlify Support in July 2025 Our CDN derives much of its efficiency from files whose checksums don’t change between deploys. For instance, in a blog, you usually write or update one article in one file, while the rest of the content remains unchanged. In this typical use case, we don’t need to re-upload and re-process these files, since our CDN already has them stored - no checksums have changed except the one file. This also means that your visitors’ browsers don’t need to re…

[Support Guide] What problems could occur when using Cloudflare in front of Netlify?

AskNetlify’s Version What risks come with proxying to Netlify? Copy the prompt above and paste it into AskNetlify, and it’ll break down this info. You can also ask clarifying questions. Still need help? No problem! We’re happy to clarify. Last reviewed by Netlify Support - July 2025 Note: We recommend not using both Cloudflare’s CDN (“Accelerate and Protect”, the orange cloud in their UI) and Netlify for the same site at the same time. Why? Read on! Netlify’s web se…

[shu]

Why are you caching with Cloudflare? Netlify serves sites via a CDN with a cache.

The site is monetized by Ezoic which in turn uses cloudflare for their setup.

[hrishikesh]

That’s a system-level header used for some purposes and cannot be removed. A lot of users use Cloudflare in front of Netlify and no one has complained about it, so there must be some configuration specific to your case that’s causing issues.

[shu]

unusual header caused ezoic to stop caching request.

ignoring the header fixed the issue.