How to reduce image HEADERS ? Tips on faster image transfers.

[LiteCache]

Hi @LiteCache, I'm not fully sure I understand
the issue you're referring to. Are you saying that the LSCWP built-in crawler is sending an incorrect "vary" header for mobile+webp when crawling the site?

No, it is not about headers but the rewrite rules for cache vary.

Would it be possible for you to open an issue on the LSCWP GitHub so others can follow the discussion?

No, it is not possible. I have invested a lot of time in the past few years to validate bugs and whenever I have reported these bugs, the reports have either been ignored or I have been spoken to in a stupid way or even insulted. (A typical LiteSpeed procedure when you don't want to fix a bug.) That is why I no longer report bugs. The screenshot clearly shows the bug and it can be easily reproduced. That's why there is no need for another bug report.

To minimize the header, I'm not sure if unsetting the ETag is a good idea, as it serves its own purpose and has a specific reason for existing.
Example https://dev.to/andreasbergstrom/understanding-cache-control-and-etag-for-efficient-web-caching-2nf5

etag makes sense if a source is cached by the server. LSWS|OLS caches only dynamic sources and that's why the etag header makes no sense with static sources.