Marin Atanasov

Provides the theme and plugin developers an easy way to build and implement highly customizable breadcrumb functionality, specifically tailored to their needs. 
Supports a lot of filters and hooks, and is written in OOP style, giving developers full control over the breadcrumb trail items and appearance. 
This plugin can also be embedded in themes, instead of installing it as a WordPress plugin.
<h3>Configuration</h3>
The most basic way to insert Carbon Breadcrumbs in your theme code is:
<pre><code><?php Carbon_Breadcrumb_Trail::output(); ?>
</code></pre>
If you want to specify various breadcrumb rendering options, you can specify them in an array, like this:
<pre><code><?php
Carbon_Breadcrumb_Trail::output(array(
 'glue' => ' &gt; ', // glue between breadcrumb items
 'link_before' => '',
 'link_after' => '',
 'wrapper_before' => '',
 'wrapper_after' => '',
 'title_before' => '',
 'title_after' => '',
 'min_items' => 2,
 'last_item_link' => true,
 'display_home_item' => true,
 'home_item_title' => __('Home', 'carbon_breadcrumbs'),
 'renderer' => 'Carbon_Breadcrumb_Trail_Renderer',
));
?>
</code></pre>
For additional configuration and developer documentation, you can visit the Github repository:
https://github.com/tyxla/carbon-breadcrumbs
<h3>Ideas and bug reports</h3>
Any ideas for new modules or any other additional functionality that users would benefit from are welcome.
If you have an idea for a new feature, or you want to report a bug, feel free to do it here in the Support tab, or you can do it at the Github repository of the project:
https://github.com/tyxla/carbon-breadcrumbs

Carbon Breadcrumbs

This remains the best breadcrumbs plugin I've used. In addition to its rich customization options, it provides developers with various easy ways to extend it.



The best breadcrumbs plugin I've used

This plugin has saved me quite some time.
Thanks to the numerous filters, you can adjust everything.
Respect <3

Very customizable

GREAT plugin, fantastic codebase: super clean & TESTED?! FTW!

Only downside is no schematagging out of the box :/. This is a pivotal SEO feature and I think this would greatly boost interest in your plugin.

Info: https://developers.google.com/search/docs/data-types/breadcrumbs#guidelines

Result should look like:

<ol itemscope itemtype="http://schema.org/BreadcrumbList">
 <li itemprop="itemListElement" itemscope
 itemtype="http://schema.org/ListItem">
 <a itemscope itemtype="http://schema.org/WebPage"
 itemprop="item" href="link.html">
 Crumb 1
 </a>
 <meta itemprop="position" content="1" />
/
 </li>
 <li itemprop="itemListElement" itemscope
 itemtype="http://schema.org/ListItem">
 <a itemscope itemtype="http://schema.org/WebPage"
 itemprop="item" href="link2.html">
 Crumb 2
 </a>
 <meta itemprop="position" content="2" />
 </li>
</ol>



Here's how I've shimmed it in:


<?php
 $breadcrumbs = new Carbon_Breadcrumb_Trail(array(
 'glue' => ' / ',
 'link_before' => '<li itemprop="itemListElement" itemscope itemtype="http://schema.org/ListItem">',
 'link_after' => '</li>',
 'wrapper_before' => '<ol class="breadcrumbs" itemscope itemtype="http://schema.org/BreadcrumbList">',
 'wrapper_after' => '</ol>',
 'title_before' => '',
 'title_after' => '',
 ));

 $breadcrumbs->setup();
 echo $breadcrumbs->render(true); // WP_KSES strips itemprop, itemscope, etc, so bypassing!!!

 add_filter('carbon_breadcrumbs_item_attributes', _'breadcrumb_schematags', 10, 2);
 function breadcrumb_schematags($attributes, $item) {
 if (!is_array($attributes)) $attributes = array();
 $attributes['itemscope'] = null;
 $attributes['itemtype'] = 'http://schema.org/WebPage';
 $attributes['itemprop'] = 'item';
 return $attributes;
 }
 add_filter('carbon_breadcrumbs_item_output', 'breadcrumb_item_position', 10, 5);
 function breadcrumb_item_position($item_output, $item, $trail, $trail_renderer, $index){
 // Add Position
 $n = strrpos($item_output, '</li>');
 $item_output = substr($item_output, 0, $n) . '<meta itemprop="position" content="'. $index .'" />' . substr($item_output, $n);
 return $item_output;
 }

Really wonderful, well-thought code. wish there were schematags

A basic WordPress plugin for breadcrumbs with advanced capabilities for extending.

seenthis

What is Sitestream?
Our technology streams your website’s images to reduce unnecessary data transfer and display them faster for your visitors. Your user experience improves while you can avoid CO2 emissions from your website.
Just download our plugin and we automatically convert your images to our streamed format in seconds. Suddenly, your images load faster and use less data.
Activate your plugin by starting your 7 day free trial and following the instructions on this link: https://sitestream.co/pricing/
Why is this important?
The internet stands for over 2% of global carbon emissions (equal to aviation) and around 30% of its energy consumption is from data transfer
An improvement in site speed by 0.1 seconds improves conversion rate up to 8% (Google & Deloitte, 2020 study)
How can Sitestream save data and reduce my emissions?
When users quickly scroll past an image, we pause its data load. Combined with the most aggressive lazy loading on the market, and optimal image compression, this leads to reduced data and energy usage for your site usage.
How can Sitestream show my images faster?
As our first image layer is a lot lighter than the original image, content is displayed quicker for your users – improving their experience. This is especially beneficial for high quality images on sites that desire a premium user experience.
Customer Testimonials
“Not only were we able to reduce our data usage with up to 78%, but we now also show images 38% faster for users on fiber connection, and 71% faster on slow 4G. So our user experience has greatly improved, especially for mobile.” – CEO at Rhyme Sthlm
“Initial results have seen AOP reduce its data usage by 65% – greatly exceeding original predictions of 40% – and improve its website image load time by 65-85%, resulting in a better user experience.” – Managing Director at UK AOP
Benefits
<ul>
<li>Avoided emissions be reducing unnecessary image data transfer</li>
<li>Improved user experience by displaying images faster for users, especially large impact on mobile connection speeds</li>
<li>See your estimated avoided emissions in real-time in your dashboard</li>
<li>Optimize image file size automatically by using our smart compression algorithm</li>
<li>Scale and resize your images using our smart image toolbox</li>
<li>Positive SEO score impact by improving user experience</li>
<li>All your images will show up in Google image search etc exactly as normal</li>
</ul>
Features
<ul>
<li>Image streaming</li>
<li>Avoided CO2 emissions from data transfer</li>
<li>Data pausing</li>
<li>Faster image display</li>
<li>SEO friendly</li>
<li>Global CDN</li>
<li>Scaling and resizing</li>
<li>Smart compression algorithm</li>
<li>Real-time data usage and avoided emissions dashboard</li>
</ul>

Sitestream

Stream your website’s images to reduce unnecessary data transfer and display content faster

Carbon Breadcrumbs vs Sitestream