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:
Create a Free Testmonial Slider App
Start for free nowAppearance > Theme
In your Tumblr dashboard, open your Account Settings. Select Edit Appearance and click Edit Theme.Edit HTML
Click on the Edit HTML link underneath Custom Theme.Paste the Script
Paste this exact POWR script into the HTML file, in between the Head tags. Then click Update, and save.Text Post
Back inside the Tumblr site editor, embed a new Text Element.Paste Shortcode
Paste the shortcode into the 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.Begin to change 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.
Not sure if our Testmonial Slider app is right for you? Find out more about its features and integrations.
See the detailsRemove the Guesswork of Building Your Brand
A Solid Brand Identity Starts on Your 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.


Now You Have To Make Your 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-cost open source alternatives for Testmonial Slider.
POWR Saves You Valuable Time
Also, customizing and updating a Testmonial Slider app calls for even more time, and is likely to cause new bugs.
As your company continues to expand, you're likely to face security issues, as hackers may attempt to take advantage of vulnerabilities in the Testmonial Slider app. POWR has you covered!


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 Testmonial Slider at peak performance 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.

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


