security - I have a small code on the end of each image link on my site that I didn't add. Does anybody know what this is? -

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mywebsiteurl.net/image.jpg?9a7ad6

what "?9a7ad6" after each image link? noticed when copy pasted url of image.

i googled it, relevant thing find #9a7ad6 hex code purple.

some wordpress themes/plugins use query strings neat things images on fly resizing. in case, query string (stuff after ?) being used prevent caching. if case, here's how fix it:

there's setting under browser cache → general says prevent caching of objects after settings change → whenever settings changed, new query string generated , appended objects allowing new policy applied. disable (if you're using plugin) , query strings dropped on static resources .jpg , .png files.

source: philip arthur moore wordpress.org: http://wordpress.org/support/topic/wordpress-32-images-show-weird-query-string

you may want take @ page: http://diywpblog.com/wordpress-optimization-remove-query-strings-from-static-resources/


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