How to Add A Modal Popup App to a Tumblr Website

Steps on adding Modal Popup to Tumblr in minutes with no coding and no help from a developer.

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Steps to Add a Modal Popup App on a Tumblr Site

Create your customized Modal Popup app, match your website's style and colors, and add Modal Popup to your Tumblr page, post, sidebar, footer, or wherever you like on your site.

How To Add a Modal Popup App on Tumblr:

  1. Create a Free Modal Popup App

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  2. Appearance > Theme

    Go to your Account Settings and click Edit Appearance. Then click Edit Theme.
  3. Edit HTML

    Click on the Edit HTML link underneath Custom Theme.
  4. Copy and Paste Script

    Paste the POWR script into the HTML file between the Head tags. Then click Update, and save.
  5. Text Post

    Return to your Tumblr Admin page, and create a new Text post.
  6. Copy and Paste Shortcode

    Paste the shortcode into the post. Then save. If you expand the post, you will see your new POWR Modal Popup.Click the POWR Settings Icon to open the POWR Editor.
  7. Begin editing the following Modal Popup plugin directly inside of the Tumblr website:

    Go to the live Tumblr website and click the Settings Icon in the upper right corner of the Modal Popup plugin.

Need to know more about features and integrations of our Modal Popup app?

See the details

Remove the Guesswork of Building Your Brand

Brand Identity Begins With a Great Website

You've already invested time and resources in building your business online just by having a Tumblr website.


Your work isn't done yet, though! Now it's time to attract and engage visitors, then make them into customers.

Modal Popup to Tumblr
Add Modal Popup to Tumblr

Then You Must Customize Your Elements

People often ask a 'techie' friend to build a Modal Popup for them or hire a 'web guy' that one of their friends referred.


Others look overseas or for low priced open source alternatives for Modal Popup.

POWR Saves You Valuable Time

Plus, updating and customizing a Modal Popup app can be challenging, and you may think you have to hire a developer.


Additionally, as your business develops, hackers could see an unsecured Modal Popup as a great opportunity to exploit your business and your customers. We consider this and built safeguards!

Add Modal Popup to Tumblr
Support feature

POWR supports high-volume sites on Tumblr and prioritizes the security of our Modal Popup app, as well as all 60+ apps, to keep any bad actors at bay.

security feature
Our top-notch customer support team is available to you 24/7 and a complete Help Center for answers to all common questions.

Our team of expert engineers work relentlessly to ensure the POWR apps such as your Tumblr Modal Popup running smoothly for you.

CASE STUDY: POWR put Rbia Shades on the success track

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.

Add Modal Popup to Tumblr
Modal Popup to Tumblr
Contacts growth 250%
Modal Popup to Tumblr
Engagement up 2x
Modal Popup to Tumblr
2x more time on site

Every POWR app works on any platform.

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Trusted by the best in the biz!

POWR has helped over a half million businesses on every continent
(besides Antarctica, because of course not)

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Frequently Asked Questions

Learn more about how to add POWR apps to your website.