How to Add A Testmonial Slider App to a Tumblr Website

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

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Steps to Add a Testmonial Slider App on a Tumblr Site

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

How To Add a Testmonial Slider App on Tumblr:

  1. Create a Free Testmonial Slider App

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  2. Edit Appearance

    In your Tumblr dashboard, open your Account Settings. Select Edit Appearance and click Edit Theme.
  3. Edit HTML

    Underneath Custom Theme, click Edit HTML.
  4. 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.
  5. Create New Text Post

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

    Paste the POWR shortcode into the text post, then save If you expand the post, you will see your new POWR Testmonial Slider.Click the POWR Settings Icon to open the POWR Editor.
  7. Begin editing the following Testmonial Slider 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 Testmonial Slider plugin.

All you need to know about our Testmonial Slider app is just a click away.

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Remove 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 getting website visitors and making sales, but how?

Testmonial Slider to Tumblr
Add Testmonial Slider to Tumblr

Make Your Website Elements Unique

Some may first take a stab at to DIY a Testmonial Slider app or 'knows a guy' that can build one in 'no time'.


Others attempt to find open source Testmonial Slider apps, or foreign companies that claim to offer Testmonial Slider apps for a bargain.

Reduce Time Spent by Half With POWR

Also, customizing these apps usually requires coding experience or another designer to help -- costing even more resources.


In a world where scammers infiltrate sites every day, many other Testmonial Slider apps out there aren't built with security in mind, which could expose your customers or worse -- crash your whole site. Not with POWR!

Add Testmonial Slider to Tumblr
Support feature

Because POWR is built for scale, has the most advanced built-in security and high-volume capabilities of any other Testmonial Slider app on the market, we protect you while you grow on Tumblr.

security feature
Our award-winning customer support team is available 24/7, as well as a dedicated Help Center to answer any questions.

Our Testmonial Slider comes with a team of expert engineers that work constantly for you, making sure your Testmonial Slider is always working smoothly.

CASE STUDY: Rbia Shades is winning with POWR apps

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.

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 full 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.

Add Testmonial Slider to Tumblr
Testmonial Slider to Tumblr
Contacts growth 250%
Testmonial Slider to Tumblr
2x engagement improvement
Testmonial Slider to Tumblr
2x site session time

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.