Safirul Alredha

If you use <a href="https://codex.wordpress.org/Gallery_Shortcode" rel="nofollow ugc"><code>[gallery]</code></a> shortcode without setting the columns value, the default is set to 3. Some WordPress theme can either fit 3 or more column per row or less.
Imagine if you use <code>[gallery]</code> shortcode with default options regularly within your posts, you switch to a new theme and the theme could only fit gallery with 2 columns per row.
To overcome this issue, the plugin will force and overwrite the current number of gallery columns within any post that uses <code>[gallery]</code> shortcode with a new number of columns of your choice without altering or tampering its original options. It also includes feature to exclude post from being overwritten by this plugin and removing the default inline styles printed when the <code>[gallery]</code> shortcode is used.
For more information, check out <a href="http://zeo.my" rel="nofollow ugc">zeo.my</a>.

Gallery Columns

Force and overwrite the current number of [gallery] columns without altering or tampering its original options.

Konstantin Kovshenin

Create a column group with the <code>[column-group]</code> shortcode, then add columns to the group with the <code>[column]</code> shortcode, like this:
<pre><code>[column-group]
 [column]This is my first column[/column]
 [column]This is my second column[/column]
[/column-group]
</code></pre>
You can also span columns, like this:
<pre><code>[column-group]
 [column span="2"]This is my first column spanned across two columns.[/column]
 [column]This is my second column[/column]
 [column]This is my third column[/column]
[/column-group]
</code></pre>
The first column will be twice as large as the second or third.
Styles are in columns.css. If you’d like your own margins and stuff, dequeue the columns.css style during <code>wp_enqueue_scripts</code> with a priority of 11 or more.

Columns

This WordPress plugin boosts your website with... you guessed it, columns!

Gallery Columns vs Columns