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.

pixelgrade

vlad.olaru

George Olaru

With <a href="https://github.com/pixelgrade/pixcodes" rel="nofollow ugc">PixCodes</a> you can have a shortcode insert interface.
The awesome part is that you can filter any shortcode parameters or overwrite any shortcode template with your theme.
Note: this plugin does not add any style to the output of shortcodes.
We believe that shortcodes functionality should be offered by a plugin and the style should be provided by themes.
Here is a <a href="http://github.com/pixelgrade/pixcodes/blob/master/README.md" rel="nofollow ugc">detailed documentation</a> about how you can configure some plugin settings and output.

PixCodes

PixCodes offers you a nice interface to add shortcodes into editor.

Gallery Columns vs PixCodes