Steps to Add a Before and after slider App on a Tumblr Site
Create your customized Before and after slider app, match your website's style and colors, and add Before and after slider to your Tumblr page, post, sidebar, footer, or wherever you like on your site.
How To Add a Before and after slider App on Tumblr:
Create a Free Before and after slider App
Start for free nowEdit Theme
Go to your Account Settings and click Edit Appearance. Then click Edit Theme.Edit HTML
Click on the Edit HTML link underneath Custom Theme.Paste the Script
Paste the POWR script into the HTML file between the Head tags. Then click Update, and save.Create Text Post
Back inside the Tumblr dashboard, add a new Text Element.Copy and Paste Shortcode
Paste this shortcode into the post. If you expand the post, you will see your new POWR Before and after slider.Click the POWR Settings Icon to open the POWR Editor.Edit your Before and after slider on Tumblr:
Go to the live Tumblr website and click the Settings Icon in the upper right corner of the Before and after slider plugin.
Need to know more about features and integrations of our Before and after slider app?
See the detailsRemove the Guesswork of Building Your Brand
Begin Building Brand Identity From Your Website
If you have your Tumblr website working, you’ve completed the biggest challenge in building an online presence. Awesome!
But next comes a tough question: how can you draw in, captivate, make, and support more visitors?


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 Before and after slider without a hitch.
Others look for low priced alternative Before and after slider apps from overseas or open source Before and after slider apps that claim to have what they're looking for.
POWR Saves You Valuable Time
Also, customizing and updating a Before and after slider app involves even more time, and is likely to cause new issues.
As your company continues to progress, you're likely to face security issues, as hackers may attempt to manipulate vulnerabilities in the Before and after slider app. POWR has you covered!


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

Furthermore, our team of incredible engineers work at all hours to keep POWR apps like your Tumblr Before and after slider up and running 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.
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.

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