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 your Tumblr dashboard, open your Account Settings. Select Edit Appearance and click Edit Theme.Edit HTML
Go to Edit HTML.Paste Script
Paste this script into the Tumblr HTML file. It's always best to paste it between the Head tags. Then click Update, and save.Create Text Post
Create a new Text post in the Tumblr dashboard.Paste Shortcode
Paste the shortcode into the 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.Begin to change the Full Screen Popup plugin:
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
Begin Building Brand Identity From Your Website
If you have your Tumblr website working, you’ve completed the biggest challenge in building an online presence. Way to go!
But next comes the hard part: how can you entice, captivate, turn, and support more visitors?


Make Your Website Elements Unique
Some small business owners try to design a Full Screen Popup app solo or get an expensive web designer that claims they can build one.
Others try to enlist web design companies overseas that claim to offer Full Screen Popup apps for reduced prices or attempt to use open source code.
Save Time With POWR
Plus, updating and customizing a Full Screen Popup app can be challenging, and you may think you have to hire a developer.
Additionally, as your business expands, 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!


All POWR apps are built to scale with your business on Tumblr, so we offer the most advanced security features and high-volume capabilities on the market to keep your customers (and you) safe.

Our Full Screen Popup comes with a team of expert engineers that work constantly for you, making sure your Full Screen Popup is always working smoothly.
CASE STUDY: Rbia Shades completely transformed their online experience
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.
Shortly after signing on with POWR, Rbia’s first step was to install a popup. They increased their contacts by over 250% (over 600 real contacts).
Soon after, they added our Social Feed app and grew their social media following to over 6000.
Next, they added a Media Slider as a visual way to quickly show their products to new site visitors as they entered their homepage to show how the accessories looked in real life. It showcases their products well and gave customers a great on-site experience.
In fact, they quickly found that visitors who interacted with POWR apps on their site stayed engaged 2.5 times longer than ever before.

Every POWR app works on any platform.
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.


