How to disable caching when serving a specific image?

Question

PHP

Welcome all.

There is an image file (http://site.com/image.jpg), which is replaced by scripts on the site from time to time (updated).
It is necessary to completely disable the caching of this image in order to always see the current one from the server when the browser requests the image.
It needs to be done through .htaccess.

Tried many methods - doesn't help... (have to press Ctrl+F5, etc. to refresh...)

In advance, Thank you so much for your help.

Answer 1

It's easier to change the image name with scripts. For example like this:"captcha.jpg?id="+Math.random()

Answer 2

Are you sure it's not the browser caching?