Install A Before And After Slider App on Tumblr

Steps on adding Before and after slider to Tumblr in minutes with no coding and no help from a developer.

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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:

  1. Create a Free Before and after slider App

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  2. Edit Appearance

    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. Paste 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.
  5. Create Text Post

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

    Paste this shortcode into the post and save. 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.
  7. 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.

Undecided if our Before and after slider app will suit your needs? We have all the details you need.

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Remove the Guesswork of Building Your Brand

Establishing Brand Identity 101 - Your Website

If you have your Tumblr website published, you’ve tackled the biggest challenge in building an online presence. Awesome!


But next comes the hard part: how can you engage, captivate, turn, and support more visitors?

Before and after slider to Tumblr
Add Before and after slider to Tumblr

Make Your Website Elements Unique

Some may think only a 'techie' in the office or a self-proclaimed 'expert' on Facebook can grow a Before and after slider without a hitch.


Others look for low-cost 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.

Reduce Time Spent by Half With POWR

And it takes lots of time to customize and update a Before and after slider app, which will create 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 Before and after slider to Tumblr
Support feature

Because POWR is built for scale, has the most advanced built-in security and high-volume capabilities of any other Before and after slider app on the market, we protect you while you grow on Tumblr.

security feature
Our top-notch customer support team is available to you 24/7 and a complete Help Center for answers to all common questions.

POWR's team of engineers are working around the clock to keep Tumblr Before and after slider and all 60+ other POWR apps 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.

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.

Add Before and after slider to Tumblr
Before and after slider to Tumblr
250% growth in contacts
Before and after slider to Tumblr
Engagement up 2x
Before and after slider to Tumblr
2x time on 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)

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Frequently Asked Questions

Learn more about how to add POWR apps to your website.