URL Rewrite - Remove .html extension

Question

So the idea is to remove the .html extension from each page like so...

www.website.com/File.html > www.website.com/File
www.website.com/Folder/File.html > www.website.com/Folder/File

Now I've managed to do this using a URL Rewrite, but it means having to write a rewrite for each page, which is time consuming, not efficient and impractical say if the website is more than 20 pages.

Is there a way to do this by writing just one or two rewrites in the web.config?

Solution

This solution worked for me in the end:

<rule name="RedirectUserFriendlyURL1" stopProcessing="true">
    <match url="^(.*)\.(.*)$" />
    <conditions>
        <add input="{REQUEST_METHOD}" pattern="^POST$" negate="true" />
    </conditions>
    <action type="Redirect" url="{R:1}" appendQueryString="false" />
</rule>
<rule name="RewriteUserFriendlyURL1" stopProcessing="true">
    <match url="^(.*)$" />
    <conditions>
        <add input="{REQUEST_FILENAME}" matchType="IsFile" negate="true" />
        <add input="{REQUEST_FILENAME}" matchType="IsDirectory" negate="true" />
    </conditions>
    <action type="Rewrite" url="{R:1}.(.*)" />
</rule> 

Comments

[Barrie Reader]

Nice one Ryano! I would vote you up - but we have been told off about voting up in the past...

[Phil C]

Unfortunately, this also removes .css, .js, and other extensions

[Jon R]

Improved my answer at: stackoverflow.com/a/62501711/12508260