Steps to Add a Countdown Cart App on a Tumblr Site
Create your customized Countdown Cart app, match your website's style and colors, and add Countdown Cart to your Tumblr page, post, sidebar, footer, or wherever you like on your site.
How To Add a Countdown Cart App on Tumblr:
Create a Free Countdown Cart App
Start for free nowEdit Appearance
In the Tumblr Editor, open your Account Settings and select Edit Appearance. On the next page, select Edit Theme.Edit HTML
Underneath Custom Theme, click Edit HTML.Paste the Script
Paste this exact script into your Tumblr HTML file. It's best to add it between the Head tags. Then click Update, and save.Create New Text Post
Go back to the Tumblr dashboard and add a new Text post.Paste Shortcode
Paste this shortcode into the post. If you expand the post, you will see your new POWR Countdown Cart.Click the POWR Settings Icon to open the POWR Editor.Edit your Countdown Cart on Tumblr:
Go to the live Tumblr website and click the Settings Icon in the upper right corner of the Countdown Cart plugin.
All you need to know about our Countdown Cart app is just a click away.
See the detailsRemove the Guesswork of Building Your Brand
Begin Building Brand Identity From Your Website
Congratulations on publicizing your business online with Tumblr!
The next step is often gaining website visitors and making sales, but how?


Make Your Website Elements Unique
Some may think only a 'techie' in the office or a self-proclaimed 'expert' on Facebook can develop a Countdown Cart without a hitch.
Others look for low-cost alternative Countdown Cart apps from overseas or open source Countdown Cart apps that claim to have what they're looking for.
Save Time With POWR
Plus, updating and customizing a Countdown Cart app can be difficult, and you may think you have to hire a developer.
Additionally, as your business develops, hackers could see an unsecured Countdown Cart as a great opportunity to exploit your business and your customers. We consider this and built safeguards!


POWR has the most advanced security features, is built for scale, and currently supports high-volume sites on Tumblr and other similar platforms.

Our Countdown Cart comes with a team of expert engineers that work constantly for you, making sure your Countdown Cart is always working smoothly.
CASE STUDY: Rbia Shades wins big with POWR
Rbia Shades needed to expand beyond its region by bringing its products online. They needed a low-maintenance, non-techie solution.
After much research, they chose POWR as their no-code tool of choice.
Rbia grew its contact list by 250% using POWR Popup to collect new email addresses from first-time site visitors.
They also added POWR Social Feed to their site and saw a 200% spike in engagement from their site visitors. They also saw a big jump in social media followers and now have over 11K followers on Instagram.

POWR apps are made to grow your online revenue.
See apps in action
Trusted by the best in the biz!
POWR has helped over a half million businesses on every continent
(besides Antarctica, because of course not)
Frequently Asked Questions
Learn more about how to add POWR apps to your website.
Yes, any POWR app will work perfectly on any website. What’s better, is the patented POWR Live Editor is the same regardless of the app.
- Easily add more than one (for free)
- Edit to your needs directly from your live site
- Changes are made instantly
Absolutely! The POWR Countdown Cart widget is optimized for mobile, ensuring that it looks great and functions smoothly across all devices, including phones and tablets.
This optimization enhances user experience, contributing to higher engagement rates on your Tumblr site.
POWR Countdown Cart allows you to edit every detail such as fonts, colors, borders, and spacing directly from the editor, ensuring your Countdown Cart perfectly match your brand's identity.
This flexibility makes it easy to integrate and align with your site's look and feel.
Adding Countdown Cart to your Tumblr site is fully outlined above and straightforward with no coding required.
Simply follow POWR's setup guide, which is as easy as copy/pasting the provided code snippet into your site's HTML.
This ease of installation makes it convenient for Tumblr site owners to implement Countdown Cart and gather feedback from their audience.
Using POWR Countdown Cart on your Tumblr site offers numerous benefits, including enhanced customization options and easy installation without coding.
These features help improve your site's user engagement by allowing visitors to provide valuable feedback, leading to better online growth.


