Preetinder Singh

This plugin is a collection of various WP tweaks like controlling number of post revisions, cleaning up wp_head(), disabling block editor, emojis, trash, XML-RPC etc. Simply change the settings as per your requirements.
<h3>Plugin Options</h3>
Disable Emojis 
Stops js/css code related to emojis.
Remove Blocks CSS 
Turn it on if you don’t use blocks editor.
Remove Gutenberg Duotone CSS 
Removes the inline CSS added by WP recently.
Remove WLW Manifest Link 
Remove the link link to the Windows Live Writer manifest file.
Remove RSD Link 
Remove the link to the Really Simple Discovery service endpoint.
Remove WordPress Generator Tag 
Remove WP Generator Meta Tag
Remove Feed Links 
Remove RSS feed links.
Remove REST Link 
Remove WordPress REST API link.
Remove OEmbed Links 
Remove oEmbed discovery code.
Remove Shortlink 
Remove short links of posts.
Remove DNS Prefetch Links 
Remove DNS prefetch code.
Disable Autosave 
Disable auto saving of posts.
Show Post/Comment Actions Links 
Show comment/post actions links without hovering over the item.
Redirect to post/page on publish/update 
Get redirect to front end after you save/publish a post.
Enable Classic Editor 
Disable block editor and use classic editor instead.
Enable Classic Widgets 
Revert to old classic widgets.
Disable XML RPC 
Disable XML RPC, a security risk.
Remove URL field from comment form 
Remove URL field from comment form. May not work with some themes.
Disable author sitemap 
Disable sitemap of site authors.
Disable category sitemap 
Disable sitemap for post categories.
Set image caption on upload 
Auto set caption after image upload. File name will be used as caption.
Disable WordPress Email Verification Prompts 
Stop WordPress from confirming your current site email.
Change excerpt ellipsis to ‘…’ 
Replace […] with ‘…’ for excerpt.
Excerpt length (Number of words) 
Change length of post excerpt.
Empty Trash Time 
Change trash time or disable trash.
Number of Post Revisions 
Set number of post revisions or disable post revisions.

TGG – WP Optimizer

This plugin is a collection of various WP tweaks.

Bishoy.A

This is a simple add-on plugin for the Contact form 7 plugin that allows you to do 2 things:
<ol>
<li>Select some forms to enable auto-save on them, meaning when a user fill the form, without even submitting it, then navigates to another page and comes back or refreshes the page, they will see the data they previously filled still available for them!</li>
<li>Select some forms to enable “Fill with Facebook” feature for them, this will automatically insert a link to the contact form 7 selected that when a user clicks, it allows them to authenticate their Facebook profile and automatically fill the form fields once they authenticate!</li>
</ol>
The plugin comes with a nice WordPress admin’s dashboard settings page and is very easy to use!
This plugin is not affiliated with the Contact Form 7 plugin

Autosaver for Contact Form 7

Great plugin

Auto-save selected Contact Form 7 and Auto-fill them by Facebook!

TGG – WP Optimizer vs Autosaver for Contact Form 7