Does Jetpack slow down WordPress?
Page load tests indicate that Requests and page size were slightly reduced but page load speed is unaffected by Jetpack.
Photon is effectively a free CDN (content delivery network) for your images, which means they’ll load fast all of the time.
However, even with the Photon module disabled, any image used in Jetpack’s beautiful Tiled Galleries module is served from the WordPress CDN anyway. So to use the Tiled Galleries module, you will be using Photon, whether it’s disabled or not.
Photon never deletes a file. So to replace an image you have to use a different file name or it will continue to serve the original with that file name.
So even after deleting an image from your website that doesn’t mean you’ve deleted it from wherever it’s stored by Photon. Your image is still out there somewhere. That worries some people.
Sometimes images do not appear in galleries. Re-embedding the image usually takes care of this.
While this might be considered a contra, images are one of the major culprits for slowing your site down and Photon speeds this up considerably by serving the images from the WordPress CDN.
Publicize allows you to connect your blog to social networking sites and automatically share new posts on Facebook, Twitter, Tumblr, Yahoo!, and LinkedIn. Alternative: NextScripts: Social Networks Auto-Poster
Add Sharing buttons for Social Media Sites.
However - see Thrive alternative
Very easy to set up Contact form. Automatically integrated with Akismet so you don’t need an additional Captcha - though this example below adds a ‘human’ check.
Following is the code I’m using on my own contact form.
[contact-form firstname.lastname@example.org' subject='myboringchannel.NET contact'][contact-field label='Name' type='name' required='1'/][contact-field label='Email' type='email' required='1'/][contact-field label='Website' type='url'/][contact-field label='Comment' type='textarea' required='1'/][contact-field label='Are you human? ' type='checkbox' required='1'/][/contact-form]
Activate the >Custom CSS module within Jetpack. Then add any custom CSS you’d like in Appearance–>Edit CSS. Preserves your changes even through updates
Jetpack will automatically take the great published content from your blog or website and share it instantly with third party services like search engines, increasing your reach and traffic. Good for SEO
Jetpack Comments allows your site visitors to comment using their own Twitter, Facebook or WordPress.com accounts. The comments are styled in a much less obtrusive manner than the typical WordPress comments.
Photon. It’s like utilizing a CDN, for free
However, because the images are now served from the WP servers, you lose any SEO from your images. This might be important to you.
Protect is a cloud-powered brute force attack prevention tool that will automatically identify and block malicious IPs. Check does not conflict with Wordfence.
“related posts” plugins can be resource-intensive and many of them are not even allowed by web hosts. All the work by the Related Posts module is done on the WordPress.com servers so it doesn’t affect your site’s performance at all
Use the Post Grid element of Thrive TCB which gives more control.
Free Subscription Service
Place the Subscriptions widget in your page, post, sidebar or footer and people can subscribe to your posts and can subscribe to specific comment conversations - for free.
The subscription code can be modified slightly. Following is the code I use for my subscriptions form on this page.
[jetpack_subscription_form title="" subscribe_text="" subscribe_button="Sign Me Up!" show_subscribers_total="0"]
All your essential stats are shown on your WordPress dashboard.
For more details, hover over Jetpack on the left-hand menu and click on Site Stats. For even more detail, click on Summaries (top right of the graph). For yet even more specific stats, click Show Me on your Jetpack Site Stats page.
The Jetpack Carousel module displays your image galleries in a great slideshow. Just activate the module.
Tiled Galleries works perfectly in tandem with Carousel.
Custom Content Types
Extra Sidebar Widgets
Likes - visitors have to be logged in to their WordPress.com account - so a very limited market. Could be useful if your site is involved in the blogging community.
Monitor - monitors up/downtime every 5 minutes. Check does not conflict with Wordfence/MainWP
Post By Email
Shortcode Embeds - stay with Thrive embed options.
With Single Sign On, your users will be able to log in to or register for your WordPress site with the same credentials they use on WordPress.com. It's safe and secure.
Once enabled, a "Log in with WordPress.com" option will be added to your existing log in form.
Sitemaps - produces an XML sitemap but will not do so if it detects another sitemap plugin. Currently using WordPress SEO to generate xml sitemap and Dagon Design sitemap for human viewing.
Spelling and Grammar
Jetpack is made by Automattic, the people who build WordPress.com.