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How can I make changes on a web page force update to browser?

I maintain a web page for a client, and every month I have to change  links that stay the same name but the link is to a pdf file that changes. I need some code to force the browser to see the changes. I Have tried the <META HTTP-EQUIV="REFRESH" CONTENT="5"> I don’t like way that looks is there a better way?
1 Solution
If you don't have full control over the webserver, and HTML is your only option, this is the most compatible option:

<meta http-equiv="cache-control" content="max-age=0" />
<meta http-equiv="cache-control" content="no-cache" />
<meta http-equiv="expires" content="0" />
<meta http-equiv="expires" content="Tue, 01 Jan 1980 1:00:00 GMT" />
<meta http-equiv="pragma" content="no-cache" />

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Soupbone79Author Commented:
Thanks I will give that a try and get back to you.
The caching client side is a user setting, and the markup is simply advisory.  The browser will not obey such directives unless the user cache setting permit it.

How are you linking to the pdf
In this case it would make more sense for the link to be to a php page, for example, and that page loads the correct version.
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