Install A Testmonial Slider App on Tumblr

The easy way to add Testmonial Slider to Tumblr in minutes without coding or needing 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. Appearance > Theme

    Go to Account Settings > Edit Appearance > Edit Theme.
  3. Edit HTML

    Go to Edit HTML.
  4. Paste the Script

    Paste this exact POWR script into the HTML file, in 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. Paste the 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 to alter the Testmonial Slider plugin:

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

Need to know more about features and integrations of our Testmonial Slider app?

See the details

Remove the Guesswork of Building Your Brand

Establishing Brand Identity 101 - Your Website

Congratulations on publicizing your business online with Tumblr!


The next step is often gaining website visitors and making sales, but how?

Testmonial Slider to Tumblr
Add Testmonial Slider to Tumblr

Now You Have To Make Your Elements Unique

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


Others look overseas or for low-cost open source alternatives for Testmonial Slider.

Get Back More Time With POWR

And it takes tons of time to customize and update a Testmonial Slider app, which will make more bugs.


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!

Add Testmonial Slider to Tumblr
Support feature

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

security feature
POWR provides 24/7 customer support and a dedicated Help Center, so someone is always there to answer all your 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 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.

Add Testmonial Slider to Tumblr
Testmonial Slider to Tumblr
Grow contacts by 250%
Testmonial Slider to Tumblr
Engagement up 2x
Testmonial Slider to Tumblr
2x more time on site

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)

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Frequently Asked Questions

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