How to use a WebView component in Adalo
The Adalo WebView component renders a web page inside a screen. Add it, set its URL, and give it enough height for the content. Pass data in by appending URL parameters built with magic text; to get data back out, the embedded page must call an API itself, a WebView cannot write to Adalo collections directly.
The WebView is how Adalo apps get interfaces Adalo cannot draw natively: chat, multi-file upload, custom charts, signature pads. It is simple to add and easy to get subtly wrong.
When a WebView is the right choice
Use it when the thing you need has its own logic or state that is faster to embed than to rebuild.
- Good fit: chat, multi-file upload, custom charts, signature pads.
- Skip it for content Adalo already renders well, native lists and text feel better.
Adding one
Add the WebView component to a screen, set its URL, then size it deliberately.
- A component that is too short is the most common WebView complaint.
- Give it enough height for the full embedded interface, not just the visible fold.
Passing data in with URL parameters
Build the URL with Magic Text so the embedded page receives context.
- Append parameters after a "?": ?user=USER_ID&item=ITEM_ID.
- Use Magic Text for the values so they follow the current record.
- Treat parameters as editable by users, verify anything sensitive server-side.
Getting data back out
A WebView cannot write to Adalo collections by itself.
- The embedded page must call an API, the Adalo API or your own backend, to save data.
- Plan that round trip before you design the flow, it is easy to discover too late.
Testing
Always test on a real device before trusting the browser preview.
- Keyboard behaviour differs between preview and device.
- Scrolling inside the embedded page can behave differently on hardware.
- Slow networks expose loading issues preview will not show.
Common mistakes and how to diagnose them
The WebView is blank.
- Likely cause:
- A bad URL, a page that refuses to be framed, or almost no height.
- Fix:
- Open the URL directly in a browser, then check the component height.
The embedded page scrolls awkwardly inside the screen.
- Likely cause:
- Two scroll areas competing, the Adalo screen and the page.
- Fix:
- Give the WebView a fixed height that fits the content, and avoid stacking it under other scrolling sections.
Parameters arrive empty.
- Likely cause:
- The magic text value does not exist on that screen.
- Fix:
- Confirm the record is passed to the screen by the link that opens it.
It works on web but not in the native build.
- Likely cause:
- Mixed content, an http URL, or a permission prompt (camera, files) that behaves differently on device.
- Fix:
- Serve everything over https and test permissions on hardware.
Real example: a signature step inside an onboarding flow
A contractor app needed a signature capture Adalo cannot draw. The signature page was embedded in a WebView with the job ID passed as a parameter; on submit the page called an API that wrote the signature URL back to the job record.
The Adalo screen then simply displayed that record. That pattern, parameter in, API call out, is how almost every useful WebView integration works.
When you need an Adalo expert
Plenty of Adalo issues are straightforward to fix yourself with the steps above. It usually pays to bring in an experienced Adalo developer when the problem sits deeper in the build:
- The embedded page must write back into Adalo collections reliably.
- You need two-way communication or the app must react as soon as the WebView finishes.
- The WebView behaves differently between the web app and the native builds.
Related guides
How to add an AI chatbot to an Adalo app
Adalo has no native chatbot component. Build a chatbot, give it your content, then embed it with a WebView component, step by step for Adalo builders.
How to upload multiple images in Adalo
Adalo Image propertys take one file at a time. Use a hosted multi-image uploader inside a WebView component so users can pick and upload several files at once.
How to connect an API to Adalo
Connect a REST API to Adalo with custom actions or external collections, including the response shape, authentication headers and pagination Adalo expects.
Frequently asked questions
Does the WebView work in published mobile apps?
Yes, it renders in native builds and the web app, but verify behaviour on hardware.
Why is my WebView blank?
Usually a bad URL, a page that refuses to be framed, or a component with almost no height. Open the URL directly in a browser first.
Can a WebView save data to my Adalo collections?
Not by itself. The page must call an API that writes the record.
How do I pass the logged-in user into a WebView?
Append their ID as a URL parameter using magic text, and verify it on the server side.
Can I use a WebView for payments?
You can embed a hosted checkout page, but confirm payment server-side rather than trusting the page.
Webnux Tools is an independent product by Webnux Ltd. It is not affiliated with, endorsed by, or sponsored by Adalo, Inc. Adalo is a trademark of Adalo, Inc.