Install A Testmonial Slider App on Tumblr

Don't know how to code? No problem with these easy steps to add Testmonial Slider to Tumblr in minutes.

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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

    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. Copy and 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.
  5. Create New Text Post

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

    Paste this shortcode into the post. If you expand the post, you will see your new POWR Testmonial Slider.Click the POWR Settings Icon to open the POWR Editor.
  7. To edit your Testmonial Slider on Tumblr:

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

Not sure if our Testmonial Slider app is right for you? Find out more about its features and integrations.

See the details

Remove the Guesswork of Building Your Brand

Establishing Brand Identity 101 - Your Website

Congratulations on making the first move to expand your company's presence online -- by getting your Tumblr website live on the web!


Here comes the next big question: How do you get site visitors to engage and buy your product or service?

Testmonial Slider to Tumblr
Add Testmonial Slider to Tumblr

Make Your Website Elements Unique

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


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

Save Time With POWR

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


But, without building 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
All common questions are answered by searching POWR's robust Help Center or by reaching out to our customer support team, which is available 24/7.

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

Yes, POWR has an app for that.

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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.