Removing any and all inline styles from the_content()

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For one of my current projects, I had to transfer blogposts from an old WordPress site to my project.

Things went smoothly until I’ve seen that all the posts were copy pasted from Word, leaving this before pretty much every paragraph:

<span style="font-size: medium; font-family: georgia,palatino;">

And at some places things like these:

<p style="text-align: justify;">
<p style="text-align: justify;"><span style="font-size: medium; font-family: georgia,palatino;"><strong><span style="color: #000000;">

So because I don’t have the 40 hours (even less the patience) to just go into every post (there’s about 100) and remove those unwanted tags, I’m looking for a filter that would just remove all style (except maybe if it contains text-decoration:underline) elements before outputting the_content()

Is there such a thing?

4 s
4

If we want to remove all inline styles, then just simply need to add the following code in functions.php.

add_filter('the_content', function( $content ){
    //--Remove all inline styles--
    $content = preg_replace('/ style=("|\')(.*?)("|\')/','',$content);
    return $content;
}, 20);

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