NerdPress has adopted Optimize Database After Deleting Revisions! Read the announcement here.
This plugin is a ‘One Click’ WordPress database cleaner & optimizer, with precise revision cleanup and flexible scheduling.
Main Features
- Deletes revisions of posts, pages and / or custom post types (you optionally can keep an ‘x’-amount of the most recent revisions and you can choose to delete revisions older than…)
 - Deletes trashed posts, pages and comments (optional)
 - Deletes spammed comments (optional)
 - Deletes unused tags (optional)
 - Deletes ‘expired or all transients’ (optional)
 - Deletes ‘pingbacks’ and ‘trackbacks’ (optional)
 - Clears the ‘OEMBED cache’ (optional)
 - Deletes ‘orphan postmeta items’
 - Optimizes the database tables (optionally you can exclude certain tables, or even specific posts/pages, from optimization)
 - Creates a log of the optimizations (optional)
 - Optimization can be scheduled to automatically run once hourly, twice daily, once daily or once weekly at a specific time (optional)
 - ‘Optimize DB (1 click)’ link in the admin bar (optional)
 - ‘Optimize Database’ Icon in the admin menu (optional)
 - MULTISITE compatible: optimizes all sites in the network with one click
 
Settings
You can find the settings page in the WP Admin Panel » Optimize Database -or- via the WP Admin Panel » Optimize Database icon (depends on settings)
Excluding specific posts/pages from deleting revisions
If you want to keep revisions for a specific post/page (no matter what the other settings are), create a custom field named ‘keep_revisions’ for that post/page and give it the value ‘Y’
Starting the Analysis / Optimization
You can start the Optimization in the WP Admin Panel » Optimize Database.
Note: if you use the Scheduler the Optimization will run automatically!
Note: you also can click the ‘Optimize DB (1 click)’ link in the admin bar (if enabled)
You can click one of the following buttons:
‘Analyze (summary): analyzes the database and gives the count of what will be cleaned
‘Analyze (detail): analyzes the database and gives a detailed report of what will be deleted
‘Optimize (summary): actually deletes the items and gives the count of what has been deleted
‘Optimize (detail): actually deletes the items and gives a detailed report of what has been deleted
Multisite Support
- Install the plugin as Network Administrator (Network Admin » Plugins)
 - ‘Network Activate’ the plugin
 - You only can configure and run the plugin on the main network site, but it will optimize ALL the sub-sites too!
 
Running the plug in from a Unix crontab
In case you cannot use WPCron, but you can edit the Unix crontab:
Create a .php file, in the root directory of your site, with:
define(‘RUN_OPTIMIZE_DATABASE’, true);
require_once(‘wp-load.php’);
?>
Then, start the .php file from your crontab!
Supported languages
- Belarus [be_BY] – translated by Natasha – https://www.ustarcash.com/ – keyword UStarCash
 - Danish [da_DK] – translated by Alexander Leo-Hansen – http://alexanderleohansen.dk
 - Dutch [nl_NL] – translated by Rolf van Gelder, CAGE Web Design – http://cagewebdev.com
 - English [en_US] – translated by Rolf van Gelder, CAGE Web Design – http://cagewebdev.com
 - French [fr_FR] – translated by Guillaume Blet – http://www.mycinetheque.fr
 - German [de_DE] – translated by Kolja Spyra
 - Indonesian [id_ID] – translated by ChameleonJohn.com
 - Italian [it_IT] – translated by Fabio Marzocca
 - Persian [fa_IR] – translated by Milad Mordi, http://seodaramal.ir
 - Portuguese [po_BR] – translated by Rede Sul Mineira de Comunicações
 - Russian [ru_RU] – translated by Vadim Sokhin, PluginZone – http://pluginzone.ru
 - Serbian [sr_RS] – translated by Ogi Djuraskovic, FirstSiteGuide – http://firstsiteguide.com
 - Swedish [sv_SE] – translated by P.E.
 - Turkish [tr_TR] – translated by Keremcan Buyuktaskin
 - Ukranian [uk_UA] – translated by Anna Goriacha, Coupofy – http://coupofy.com
 
Disclaimer
NO WARRANTY, USE IT AT YOUR OWN RISK! MAKE BACKUPS FIRST!