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 nowAppearance > Theme
Go to Account Settings > Edit Appearance > Edit Theme.Edit HTML
Click on the Edit HTML link.Paste POWR 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.New Text Post
Return to your Tumblr Admin page, and create a new Text post.Paste Shortcode
Paste this shortcode into the post and save. If you expand the post, you will see your new POWR Testimonial Slider.Click the POWR Settings Icon to open the POWR Editor.Begin editing the following Testimonial 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 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
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?


Then You Must Customize Your Elements
Some may think only a 'techie' in the office or a self-proclaimed 'expert' on Facebook can expand a Testimonial Slider without a hitch.
Others look for low-cost alternative Testimonial Slider apps from overseas or open source Testimonial Slider apps that claim to have what they're looking for.
Reduce Time Spent by Half With POWR
And it takes lots of time to customize and update a Testimonial Slider app, which will create 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 supports high-volume sites on Tumblr and prioritizes the security of our Testimonial Slider app, as well as all 60+ apps, to keep any bad actors at bay.

Our team of expert engineers work relentlessly to make sure the POWR apps such as your Tumblr Testimonial Slider running smoothly for you.
CASE STUDY: Rbia Shades is winning with POWR apps
After much success locally, Rbia needed a way to collect emails effectively on their brand-new website.
Their website provider did not have what they were looking for, so the search was on. After doing their research, they believed POWR was what they needed.
Rbia grew its contact list by 250% using POWR Popup to collect new email addresses from first-time site visitors.
They also added POWR Social Feed to their site and saw a 200% spike in engagement from their site visitors. They also saw a big jump in social media followers and now have over 11K followers on Instagram.

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)
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.