Blogging with lots of images on each post is surely a repetitive task where in some time will burn you out. The task for opening and inserting images to the post is a boring task. For you who have a few WordPress coding skills, you can write a piece of code to call for the current post attachments and output it to the browser. I have this piece of code, once referred by Isnaini from a website which is now currently available. With a function called the_image(), any number of images attached to a post will be automatically listed along with the single page view.
One thing I found later, that it costs a bit of WordPress queries to call each those attachments off the database. Getting attachments with get_posts() function is one query, extracting its size and file location is another call to wp_postmeta where all data about an attachment is stored. So if you have 20 images in a post, you’ll end up with additional 21 queries. More queries means more load time for your server to response a request from browser. Bad.
So, now I improved those snippet so that every request to attachment in database will be only fired up once, and then cached silently into WordPress main posts table, the wp_posts table. This table and the corresponding table row is ALWAYS called everytime a post is requested, which means we don’t need to make additional queries just to get post attachments.
Now, here’s the plugin… Download from the WordPress.org repository
http://wordpress.org/plugins/daniy-image-manager/
Once you download, upload and install it on your WordPress, go to the text editor and put this single line of function in single.php right after <?php the_content(); ?> tag, to get ALL the post attachments
<?php imwp_view_gallery(); ?>
And in your archive.php, or category.php, put this function in a WordPress Loop to call the post thumbnail
<?php imwp_view_thumbnail(); ?>