Generate a Barcode

Easily generate image barcodes in various types with this simple custom action.


1. Login to and navigate to your dashboard (we'll need this for your API Key in a minute)
2. Open a new tab in your browser and open up your Adalo app in the Adalo editor
3. Once open, place a test button on a screen of your choosing
4. Under the "Click Actions" for the button, select Custom Action
5. Give your action a name, such as "Generate Barcode"
6. Select the Create option from the dropdown below the Title field, then click Next
7. Copy the following URL and paste it into the Base URL field of the Custom Action
8. Set the "Method" dropdown to POST
9. Add a query parameter called Content-Type with the value application/json
10. Add another query parameter called api_key with your Adastacks API Key as the value
11. Add Inputs to hold your data for the new Custom Action (You can name these whatever you like, but below are some suggestions)
Suggested Input Name
Input Type
Suggested Input Test Data
Barcode Data
Should be any valid URL
Barcode Type
Send one of the following barcode types listed in bold:
For EAN-8: S_EAN8
For EAN-13: S_EAN13
For Code-128: BCL_CODE128
For Code-39: BCL_CODE39
12. Replace the capitalized text in the URL with the Inputs you just made using the Magic Text button in the top right of the URL field.
13. Run the test request. (See the success screenshot below). The action will return a URL that you can then save to your database and use as the image source throughout your app.
Even test actions that fail return a "Test Successful" message so be sure to click Show Full Response to ensure the action succeeded. This is by design so that you can still save the action and return to continue setting it up later if you wish.
14. Save the Custom Action and add it where you need it throughout your app.