How to disable indexing of individual pages for attachment wordpress?

Question

Google

There is a page, attachments (pictures) are loaded for it. And these attachments were indexed in Google, getting a separate page each. Can you please tell me how to delete the pages of these attachments and disable their indexing? Is it enough to write in robots.txt a ban on indexing wp-content/uploads?

Answer 1

SEO plugins have a setting - redirect to a post.
This is better than 404.
In general, in order to avoid this, it was not necessary to make links to attachment pages when inserting pictures.

Answer 2

paste in functions.php

function wph_noindex_for_attachment() {
    if(get_post_mime_type()!= false) {
        echo '<meta name="robots" content="noindex, nofollow" />'.PHP_EOL;
    }
}
add_action('wp_head', 'wph_noindex_for_attachment');

Answer 3

delete via google webmaster
prohibit yes, you can uploads, but look at the problem deeper - how did google find them?
Maybe it's the wrong return of the content?