Steps to Add a Testimonial Slider App on a Tumblr Site
Create your customized Testimonial Slider app, match your website's style and colors, and add Testimonial Slider to your Tumblr page, post, sidebar, footer, or wherever you like on your site.
How To Add a Testimonial Slider App on Tumblr:
Create a Free Testimonial Slider App
Start for free nowEdit Appearance
In the Tumblr Editor, open your Account Settings and select Edit Appearance. On the next page, select Edit Theme.Edit HTML
Click on the Edit HTML link underneath Custom Theme.Paste POWR Script
Paste this exact POWR script into the HTML file, in between the Head tags. Then click Update, and save.Text Post
Return to your Tumblr Admin page, and create a new Text post.Paste the Shortcode
Paste the shortcode into the post. Then save. If you expand the post, you will see your new POWR Testimonial Slider.Click the POWR Settings Icon to open the POWR Editor.To edit your Testimonial Slider on Tumblr:
Go to the live Tumblr website and click the Settings Icon in the upper right corner of the Testimonial Slider plugin.
Not sure if our Testimonial Slider app is right for you? Find out more about its features and integrations.
See the detailsRemove the Guesswork of Building Your Brand
Brand Identity Begins With a Great Website
If you have your Tumblr website working, you’ve tackled the biggest challenge in building an online presence. Way to go!
But next comes the hard part: how can you draw in, captivate, make, and support more visitors?


Website Element Customization is Next
People often ask a 'techie' friend to design a Testimonial 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 Testimonial Slider.
Get Back More Time With POWR
And it takes tons of time to customize and update a Testimonial Slider app, which will make more issues.
But, without building a strong security system, your site could be prone to hacking and other security issues. We thought of that!


POWR has the most advanced security features, is built for scale, and currently supports high-volume sites on Tumblr and other similar platforms.

Furthermore, our team of talented engineers work nonstop to keep POWR apps like your Tumblr Testimonial Slider up and running for you.
CASE STUDY: Rbia Shades wins big with POWR
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.

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 Testimonial Slider 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 Testimonial Slider allows you to edit every detail such as fonts, colors, borders, and spacing directly from the editor, ensuring your Testimonial Slider perfectly match your brand's identity.
This flexibility makes it easy to integrate and align with your site's look and feel.
Adding Testimonial Slider 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 Testimonial Slider and gather feedback from their audience.
Using POWR Testimonial Slider 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.


