Set individual image cache/expire date

The following article makes use of the FilesMatch directive for .htaccess - https://stackoverflow.com/questions/2508783/add-expires-headers-for-specific-images

This seems like the most logical solution. So, you'd end up with something like :

<FilesMatch "^(seal\.jpg)$">
  ExpiresActive on 
  ExpiresDefault "access plus 1 month"
</FilesMatch>

You should be able to use any of the following for timings:

• years
• months
• weeks
• days
• hours
• minutes
• seconds