Steps to Add a Full Screen Popup App on a Tumblr Site
Create your customized Full Screen Popup app, match your website's style and colors, and add Full Screen Popup to your Tumblr page, post, sidebar, footer, or wherever you like on your site.
How To Add a Full Screen Popup App on Tumblr:
Create a Free Full Screen Popup App
Start for free nowEdit Appearance
Go to your Account Settings and click Edit Appearance. Then click Edit Theme.Edit HTML
Click on the Edit HTML link.Paste the Script
Paste this exact POWR script into the HTML file, in between the Head tags. Then click Update, and save.New Text Post
Return to your Tumblr Admin page, and create a new Text post.Copy and Paste Shortcode
Paste this shortcode into the post and save. If you expand the post, you will see your new POWR Full Screen Popup.Click the POWR Settings Icon to open the POWR Editor.Edit your Full Screen Popup on Tumblr:
Go to the live Tumblr website and click the Settings Icon in the upper right corner of the Full Screen Popup plugin.
Undecided if our Full Screen Popup app will suit your needs? We have all the details you need.
See the detailsRemove the Guesswork of Building Your Brand
Establishing Brand Identity 101 - Your Website
Congratulations on starting to grow your site online -- by getting your Tumblr website live on the web!
Here comes the next big question: How do you get site visitors to engage and buy your product or service?


Website Element Customization is Next
Some small business owners try to build a Full Screen Popup app solo or get an expensive web designer that promises they can build one.
Others try to enlist web design companies overseas that appear to offer Full Screen Popup apps for low prices or attempt to use open source code.
Save Time With POWR
And it takes lots of time to customize and update a Full Screen Popup app, which will result in more issues.
But, if you haven't built a strong security system, your site could be prone to hacking and other security issues. We thought of that!


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

POWR's team of engineers are working around the clock to keep Tumblr Full Screen Popup and all 60+ other POWR apps working perfectly.
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 started to see success with POWR Popup almost immediately, adding over 600 new contacts in the first 90 days.
They then realized that there was a complete suite of other solutions they could use to improve their online experience for site visitors.
Soon, Rbia embedded an Instagram Feed app on their website and noticed site visitors who interacted with the app doubled the time spent on their page while growing their followers to over 11k on Insta at the same time.

Yes, POWR has an app for that.
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 Full Screen Popup 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 Full Screen Popup allows you to edit every detail such as fonts, colors, borders, and spacing directly from the editor, ensuring your Full Screen Popup perfectly match your brand's identity.
This flexibility makes it easy to integrate and align with your site's look and feel.
Adding Full Screen Popup 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 Full Screen Popup and gather feedback from their audience.
Using POWR Full Screen Popup 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.


