CO2ok for Woocommerce


CO₂ok empowers companies and their customers in the fight against climate change by offering a service that provides the ability to make purchases climate neutral. We help online retailers create meaningful engagement with their customers by empowering them to choose climate neutrality and communicate this choice – building a positive brand image through demonstrated environmental responsibility.

As awareness about the importance of preserving the environment continues to grow among consumers, companies are increasingly looking for ways to “go green”. Of course, you need to protect your bottom line as well. By enabling your customers to make their purchase climate neutral with CO₂ok, you can do your bit to drive back climate change. CO₂ok lets you increase your conversion with no upfront or recurring costs.

Account & Pricing
During installation an account for our service will be created automatically. Use of this service is free of charge. It only takes 1 minute to install the CO₂ok-plugin. When you have integrated the plugin in your webshop, your customers can make their own choice to contribute. That way they make their purchase climate neutral. The minor extra free is on average 2%. For more information, please visit our FAQ Page.

* Multi-language (currently English, Dutch and German – let us know which language you need!)
* Clear information ‘hoverbox’ – customers don’t need to visit our site for explanation
* Flexible placement on the checkout page
* 2 button designs available
* give your customers a smile on their face with our gifs (or disable them)
* show of your impact with our widgets!

How it works

Using our button, shown on the shopping cart and checkout pages, the customer can add a small extra fee (on average 2%), to make their purchase climate neutral.
1. We calculate the cost to compensate the greenhouse gases that are emitted during production and transport of the products – this amount is shown on the button.
2. If the customer chooses to make their purchase CO₂ok, the fee will be added to their cart – the ordering and payment process is unchanged.
3. This amount is used to finance sustainable energy and CO₂-emission reduction projects (via our certified partner, Atmosfair)
4. These projects actively reduce the amount of emitted CO₂. This CO₂ reduction matches the emission of their purchase – thereby making it climate neutral!
The compensation fee gets paid to you by the customer. CO₂ok sends a digital invoice at the end of each 3 month term. With the proceeds we finance CO₂-compensating projects.

Go green
As retailer, you naturally try to run your business as sustainably as possible. However, some things are beyond your control – the manufacturing and shipping of your products for example. Manufacturers take too long to become climate neutral. CO₂ok fills this gap and allows your customers to buy everything they want, without contributing to climate change!

Higher conversion rate, more turnover
Consumer research has shown that associating your business with a cause not only strengthens your brand, but reduces shopping cart abandonment, increases customer loyalty & lifetime value and increases overall sales. This is also called ‘Cause Marketing’. Additionally, being listed in our partner index will help more environmentally conscious customers find your store.

Easy integration and use
Installing our extension takes just a few minutes, for customers, using it is just one click. Nothing about the ordering-process changes. You won’t lose customers by any tedious procedures. If you bump into a problem with the extension, we’re always available through mail or by phone.

Help us fight climate change!

more information on our site

Please let us know if you have feedback/questions or something doesn’t work as expected: drop us a line : or use the support section on

Terms of Service


  • The CO2ok button as it is presented to users

  • An overview that includes the checkout screen

  • The minimal button design and info-hover

  • Show off your impact with our widgets!


Installing our extension takes just a few minutes, for customers, using it is just one click. Nothing about the ordering-process changes. You won’t lose customers by any tedious procedures. If you bump into a problem with the extension, we’re always available through mail or by phone.

This plugin can be installed via:
* the WordPress plugin installer
* manual Installation

Once installed activate the plugin through the ‘Plugins’ screen in WordPress


What changes for my customers?

Besides the option that the CO2 compensation button provides, nothing changes. Your customers aren’t troubled with registration or added steps – they just check out as always, regardless of whether they opted for CO2 compensation or not.

Privacy considerations

We gather as little data as possible, specifically:
– the WordPress admin email address, for sending invoices
– limited information about transactions with CO2 compensation selected (orderid, order total and compensation amount)


October 30, 2019
Sustainability is at the core of our company. We do a lot to lower our footprint. We also like giving customers the opportunity to do more. They have made it simple to show the results on your site. The services were installed within 5 minutes and now no maintancende or effort is needed. The results of the A/B gave us wonderful (positive) insights.
October 30, 2019
We have been using the CO2 plugin for almost a year now, and are very satisfied. Customers only tick one box when paying for their order, and the CO2 emissions will be compensated for them. About 60% of our customers choose this option during checkout. It is a service we want to offer, as we sell sustainable/low waste/zero waste products in the webshop. Customers think extra about their purchase, and buy it consciously. The mission of CO₂ok is 100% in line with our mission, to create a more sustainable and cleaner world! Twice a year I receive an invoice for the CO2 compensation of all orders done with the plugin. So I hardly have any extra work! 🙂
October 18, 2019
The people of CO2ok are very willing to help. The installation was a piece of cake. I agree with the idea that webshops should help in the fight against climate change. We are working on getting the CO2 calculation more precise. Lost but not least, our customers love the compensation option. The plug-in together with the new website resulted in higher conversion.
Read all 7 reviews

Contributors & Developers

“CO2ok for Woocommerce” is open source software. The following people have contributed to this plugin.



* Optimizes widget impact data loading
* Fixes minor CSS issue with minimal design

* Fixes minor CSS issue

* Fixes a rounding issue

* Improves refund handling

* Fixes bug with wc_get_orders and A/B research

* Improves A/B research code
* Improves social&impact proof feature

* Fixes bug JS code

* Fixes bug with A/B test code in some scenarios
* Adds social&impact proof to minimal design compensate button
* Adds clarifying sentence to social&impact proof
* fixes bug with minimal design in some checkouts

* Adds XL widgets!
* Adds social&impact proof to compensate button
* Corrects bug with some transactions not being stored

* Adjusts surcharge percentage calculation

* Fixes bug with A/B test functionality on some stores

* Adds A/B test functionality
* Adds widgetmark to the footer by default (can be disabled on settings page)
* Tested in latest WP/WC versions

* Fixes JS issue with some WP optimizing plugins

* Fixes css issue for info-hovercard in some shops

* Fixes issue with some checkouts

* Fixes rounding error

* Adds support for a3 lazy loader
* Adds support for custom co2ok tax class for shops that need it

* Adds widget-mark shortcode ([co2ok_widgetmark]), dark launch
* Expands WP plugin dir tags
* Corrects ToS link

* Changes estimated percentage to 2%

* Removes buggy checkout placement option, adds better one (Before Order Review)

* Actually squashes last CSS bug

* Another CSS bug squashed

* Fixes CSS bug
* Tells Jetpack not to lazy-load our logo
* Corrects decimal separator for non-comma-using currencies

* Fixes shopping cart page fee adding bug
* Increases support for plugins that aggressively optimize loading (and thus delay jQuery)

* Adds setting to disable gifs, adds some gifs

* Fixed small layout issue

* Reduced size of default button design
* Increased reliability of transaction storing

* Fixes conflict with plugin
* Tested in latest WP/WC versions
* Disables some gifs (let us know what you think! Suggestions welcome)

* Adds German translation
* Tested in latest WP/WC versions

* fixes CSS issue on checkout page in some shops
* corrects VAT message
* adds support for large compensation amounts

* Fixes bugs with the awesome gifs

* Adds awesome gifs!
* Fixes bug with accessibility

* Adds checkout-page placement feature
* The button is now keyboard selectable and readable for screenreaders

* fixes bugs with hoverbox and adaptive text colour

* Only scroll for hoverbox on mobile
* Fixes VAT being applied twice on cart page

* Hotfix to fix JS compatiblity with some themes

* Adds opt-out feature (please let us know what you think!)
* Fixes compatiblity with IE/Edge
* Fixes compatiblity with some themes/WC versions
* Improves UX for hoverbox
* Minor design tweaks

* Minor cart page bugfix

* Adds support for obscure WooCommerce cart pages
* Fixes bug with minimal design

* Fixes some CSS issues
* Adds explanatory sentence to the minimal button design

* Adds minimal design option for our button
* Updates Freemius SDK for GDPR compliance
* Fixes bugs with non-updating amount on button
* Includes Roboto font via httpS (thanks Linda!)
* Minor fixes

* Reverts JS implementation to more compatible one
* Fixes minor CSS issues
* Implements optional Freemius analytics
* Fixes some transactions not being stored in the CO2ok backend
* Improves settings page

* Fixes info-hover’s invisibility in some webshops
* Fixes button clickability and functionality in certain webshops
* Minor layout/rendering improvements

* Fixes security issue

* New design, even fresher now
* Corrected VAT calculation
* Made error handling more robust
* Fixed button on cart page (broken by WC 3.3)
* Expanded TDD test coverage
* Implemented remote logging (currently disabled – we need to discuss this with the WP plugin team first)

* Reverts to previous release

* Fresh new design
* clearer communication of the function (make climate neutral instead of build a better future)
* implemented settings screen for future button layout selection and opt-in for helping us improve our product
* bugs be gone

  • Hello world! Now in English as well as in Dutch – other languages will follow
  • Added support for every currency that Woocommerce supports
  • More resiliant against aggressive designs
  • Now even prettier in FireFox

  • Improved button design, fixed some bugs


  • Initial release