Add A Media button near the ACF URL or any Field on Backend

readme.md

Copy the filed ID by Right clicking on the field from the backend. Assign it into the field variable in the code(Line 13). Activate the snippet.

media-button-near-acf-field.php

<?php
add_action('admin_enqueue_scripts', function($hook) {
    // Load only on product edit pages
    if ( ! in_array( $hook, ['post.php', 'post-new.php'], true ) ) return;
    if ( get_post_type() !== 'product' ) return;

    // Load WordPress media scripts
    wp_enqueue_media();

    // Inline script
    $script = <<<JS
    jQuery(document).ready(function($) {
        var field = $('#acf-field_68b99c7c75166'); // your field ID

        if (field.length) {
            // Add "Add Media" button
            var button = $('<button type="button" class="button add-media-btn" style="margin-top:5px;">Add Media</button>');
            field.after(button);

            // Add a preview link container
            var preview = $('<a href="#" target="_blank" class="acf-media-preview" style="margin-left:10px;display:none;margin-top:5px;">View File</a>');
            button.after(preview);

            // If field already has value
            if (field.val()) {
                preview.attr('href', field.val()).show();
                button.text('Change File');
            }

            button.on('click', function(e) {
                e.preventDefault();

                var frame = wp.media({
                    title: 'Select or Upload File',
                    button: { text: 'Use this file' },
                    multiple: false
                });

                frame.on('select', function() {
                    var attachment = frame.state().get('selection').first().toJSON();
                    field.val(attachment.url).trigger('change');

                    // Update preview
                    preview.attr('href', attachment.url).show();
                    button.text('Change File');
                });

                frame.open();
            });
        }
    });
    JS;

    wp_add_inline_script('jquery-core', $script);
});