nreljin

A lightweight tool to move content between WordPress sites with precision.
Features 
– Export a single post or page to JSON (includes meta, terms, and revisions) 
– Import a previously exported JSON to recreate the post on another site 
– Works with all public post types; sets current user as the author on import 
– Adds an Export action in Posts/Pages list rows 
– Adds Tools → Post Import with a file upload form 
– Robust UTF-8 handling: exports HTML‑entity encode content/meta; imports decode to avoid double‑encoding
Perfect for 
– Migrating content between environments 
– Duplicating complex posts across sites 
– Archiving rich post data including revision history

NR Post Exporter

Export/import individual posts with meta, terms, and revisions. Adds Export row action and Import screen.

Roger Rodrigo

Keep your WordPress fast and your database clean!
WordPress 3.6 allows users to control how many revisions are stored for each supported post type. 
This plugin provides an interface for this new functionality.
<h4>Why you should use this plugin?</h4>
Each time you click Save Draft or Update, a revision is saved on the database. 
WordPress will store all revisions for each page on your blog. Revisions allow you to look back at the recent changes you’ve made and revert to an earlier version if necessary.
But, what about all those revisions that you won’t use anymore? Yes, they are still there, taking space from your hosting space and increasing the volume of your database and making it slower and heavier!
With this plugin you can easily limit the number of revisions that you want to save, with this you are saving space on your database and keeping the overall site performance in good shape.
<h4>How can I change/limit the number of revisions stored on my database?</h4>
Once <code>WP Revisions Limit</code> plugin is installed and activated, go to Settings > Revisions Limit in your WordPress site and specify the number of revisions you want to store for each post/page under Revisions Options section.
<h4>Compatibility:</h4>
This plugin is fully compatible with any WordPress site with version 3.6 or higher.
Requires at least WordPress 3.6 and PHP 5.3
Please show your support for this plugin by giving it a <a href="https://wordpress.org/support/view/plugin-reviews/wp-revisions-limit?rate=5?rate=5#postform" rel="ugc">rating</a>
Development is on GitHub: https://github.com/rrodrigonuez/WP-Revisions-Limit
Pull requests are more than welcome!

WP Revisions Limit

Limit the number of revisions stored for your posts. Keep your WordPress fast and your database clean!

NR Post Exporter vs WP Revisions Limit