Install A Lightbox Gallery App on Tumblr

Learn the steps to add Lightbox Gallery to your Tumblr website in minutes with no coding or 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. Appearance > Theme

    In the Tumblr Editor, open your Account Settings and select Edit Appearance. On the next page, select Edit Theme.
  3. Edit HTML

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

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

    Go back to the Tumblr dashboard and add a new Text post.
  6. Paste the Shortcode

    Paste the shortcode into the post. Then save. If you expand the post, you will see your new POWR Lightbox Gallery.Click the POWR Settings Icon to open the POWR Editor.
  7. To edit your Lightbox Gallery on Tumblr:

    Go to the live Tumblr website and click the Settings Icon in the upper right corner of the Lightbox Gallery plugin.

Not sure if our Lightbox Gallery app is right for you? Find out more about its features and integrations.

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Remove the Guesswork of Building Your Brand

A Solid Brand Identity Starts on Your Website

Congratulations on getting your business online with Tumblr!


The next step is often gaining website visitors and making sales, but how?

Lightbox Gallery to Tumblr
Add Lightbox Gallery to Tumblr

Then You Must Customize Your Elements

Some small business owners try to develop a Lightbox Gallery app solo or get an expensive web designer that claims they can build one.


Others try to enlist web design companies overseas that appear to offer Lightbox Gallery apps for reduced prices or attempt to use open source code.

Get Back More Time With POWR

And it takes tons of time to customize and update a Lightbox Gallery app, which will create more bugs.


But, if you haven't built 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 Lightbox Gallery comes with a team of expert engineers that work constantly for you, making sure your Lightbox Gallery is always working smoothly.

CASE STUDY: POWR put Rbia Shades on the success track

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% growth in contacts
Lightbox Gallery to Tumblr
2x your engagement
Lightbox Gallery to Tumblr
2x time on site

Every POWR app works on any platform.

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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.