Sadi

I defined 2 filters in my theme’s functions.php

//PDF - GENERATION FILTERS

function wp_post_to_pdf_content_prepend($content, $post_id){
    $post = get_post($post_id);
    $new_content = ....;

    // -- FOR TYPES & VIEWS
    // $new_content = types_render_field('price', array()); //get price custom field for $post

    return $new_content . $content;
}

function wp_post_to_pdf_content_append($content, $post_id){
    $post = get_post($post_id);
    $new_content = ...

    return $content . $new_content;
}

add_filter( 'wp_post_to_pdf_content_prepend', 'wp_post_to_pdf_content_prepend', 10, 2);
add_filter( 'wp_post_to_pdf_content_append', 'wp_post_to_pdf_content_append', 10, 2);

I added following code in generate_pdf_file($id, $forceDownload = false) function of wp-post-to-pdf.php file before calling of $pdf->SetCreator

$post->post_content = apply_filters('wp_post_to_pdf_content_prepend', $post->post_content, $post->ID);

$post->post_content = apply_filters('wp_post_to_pdf_content_append', $post->post_content, $post->ID);

Let me know if it works for you or any better way you know.

Thanks

Don’t activate the plugin until you change the plugin folder name to ‘wp_export’ (from wp-export-all-post-information-excel-format).

Thanks,
Sadi