Using Local Storage Plugin to Add Offline Functionality in Bubble (JSON-based approach)

Hi everyone,

I wanted to share a recent solution I built in Bubble where I implemented a download for offline use feature using the Local Storage plugin.

The problem

I was working on an app where users needed to access certain content even without internet. Instead of full offline app functionality, the requirement was simpler: users should be able to download data and use it later offline.

Since Bubble doesn’t provide native offline storage or download caching, I had to figure out a workaround.

The idea

I realized I could simulate a “download” feature by storing structured data in the local storage using Local Storage plugin, and then retrieving it when needed.

Instead of just caching temporarily, the goal was:

  • User clicks “Download”

  • Data is saved locally

  • User can access it later even without internet

How I implemented it

  • I structured the required data into a JSON object (e.g. items, text content, or records)

  • When the user clicks the Download button, I convert the data into JSON

  • Using the Local Storage plugin, I store this JSON in the browser

  • On the offline page/view, I check local storage

  • If data exists, I read it, parse the JSON, and display it like normal app data

Flow example

  1. User selects content → clicks “Download”

  2. App converts content into JSON

  3. JSON is saved in Local Storage

  4. Later, user opens “Offline Mode”

  5. App reads Local Storage → parses JSON → renders content

Outcome

This gave the user a smooth offline viewing experience without needing a backend overhaul or PWA setup. It effectively worked like a lightweight download system inside Bubble.

Key takeaway

Even without native offline support, Bubble can still handle practical offline-like features using clever use of Local Storage and JSON structuring.

Would love to hear if anyone has improved approaches for real offline-first Bubble apps.

If you don’t have Internet, how is the bubble app page loading to read and display the local storage values?

This is actually for a mobile app, not a website!

​Because the app is installed on the phone, the pages can still open even when there is no internet.

​So the flow is simple: when the user is online, they download the data and it saves to local storage. When they are offline, they open the mobile app, it reads that local storage, and displays the data perfectly!

So this is for bubble native mobile apps?

Yes, But you can also use local storage plugin to store any data in the browser memory too for other use cases.