Install A Lightbox Gallery App on Tumblr

Steps on adding Lightbox Gallery to Tumblr in minutes with no coding and no help from a developer.

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Steps to Add a Lightbox Gallery App on a Tumblr Site

Create your customized Lightbox Gallery app, match your website's style and colors, and add Lightbox Gallery to your Tumblr page, post, sidebar, footer, or wherever you like on your site.

How To Add a Lightbox Gallery App on Tumblr:

  1. Create a Free Lightbox Gallery App

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  2. Edit Appearance > Edit Theme

    Go to your Account Settings and click Edit Appearance. Then click Edit Theme.
  3. Edit HTML

    Click on the Edit HTML link underneath Custom Theme.
  4. Copy and Paste Script

    Paste this exact POWR script into the HTML file, in between the Head tags. Then click Update, and save.
  5. Text Post

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

    Paste this shortcode into the post. If you expand the post, you will see your new POWR Lightbox Gallery.Click the POWR Settings Icon to open the POWR Editor.
  7. Begin editing the following Lightbox Gallery 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 Lightbox Gallery plugin.

All you need to know about our Lightbox Gallery app is just a click away.

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Remove the Guesswork of Building Your Brand

A Solid Brand Identity Starts on Your Website

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


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

Lightbox Gallery to Tumblr
Add Lightbox Gallery to Tumblr

Then You Must Customize Your Elements

People often ask a 'techie' friend to build a Lightbox Gallery for them or hire a 'web guy' that one of their friends referred.


Others look overseas or for low-cost open source alternatives for Lightbox Gallery.

POWR Saves You Valuable Time

And it takes huge amount of time to customize and update a Lightbox Gallery app, which will result in more complications.


But, without building a strong security system, your business could be prone to hacking and other security issues. We thought of that!

Add Lightbox Gallery to Tumblr
Support feature

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

security feature
POWR provides 24/7 customer support and a dedicated Help Center, so someone is always there to answer all your questions!

Our team of expert engineers work 24/7 to ensure the POWR apps such as your Tumblr Lightbox Gallery working for you.

CASE STUDY: Rbia Shades wins big with POWR

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 started to see success with POWR Popup almost immediately, adding over 600 new contacts in the first 90 days.


They then realized that there was a full suite of other solutions they could use to improve their online experience for site visitors.


Soon, Rbia embedded an Instagram Feed app on their website and noticed site visitors who interacted with the app doubled the time spent on their page while growing their followers to over 11k on Insta at the same time.

Add Lightbox Gallery to Tumblr
Lightbox Gallery to Tumblr
250% contacts growth
Lightbox Gallery to Tumblr
Engagement up 2x
Lightbox Gallery to Tumblr
2x site session time

All POWR apps are built for peak-performance.

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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.