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 > Edit Theme
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 Text Post
Create a new Text post in the Tumblr dashboard.Copy and Paste Shortcode
Paste the POWR shortcode into the text post, then 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.
Not sure if our Full Screen Popup app is right for you? Find out more about its features and integrations.
See the detailsRemove the Guesswork of Building Your Brand
Begin Building Brand Identity From Your Website
If you have your Tumblr website published, you’ve completed the biggest challenge in building an online presence. Way to go!
But next comes a tough question: how can you engage, captivate, turn, and support more visitors?


Website Element Customization is Next
Some may first try to DIY a Full Screen Popup app or 'knows a guy' that can build one in 'no time'.
Others attempt to find open source Full Screen Popup apps, or companies abroad that allegedly offer Full Screen Popup apps for a bargain.
Save Time With POWR
Plus, updating and customizing a Full Screen Popup app can be difficult, and you may think you have to hire a developer.
Additionally, as your business booms, hackers could see an unsecured Full Screen Popup 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.

POWR's team of engineers are working around the clock to keep Tumblr Full Screen Popup and all 60+ other POWR apps working smoothly.
CASE STUDY: Rbia Shades wins big with POWR
After Rbia launched its website, they were looking for a solution to add new contacts for outreach.
They found POWR while looking for a popup solution on their site and started to see immediate results.
In just a few short months of installing a POWR Popup app, Rbia earned over 600 new contacts – a 250% growth.
Next, they used a Social Feed app and quickly noticed a leap in new followers on Instagram and 200% more engagement on their site.
Last came the Media Slider. A beautiful way to show off their products and accessories to every site visitor the moment they land on their site.

All POWR apps are built for peak-performance.
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.


