How to connect OCR Space and Google Cloud Pub\Sub
Create a New Scenario to Connect OCR Space and Google Cloud Pub\Sub
In the workspace, click the “Create New Scenario” button.

Add the First Step
Add the first node – a trigger that will initiate the scenario when it receives the required event. Triggers can be scheduled, called by a OCR Space, triggered by another scenario, or executed manually (for testing purposes). In most cases, OCR Space or Google Cloud Pub\Sub will be your first step. To do this, click "Choose an app," find OCR Space or Google Cloud Pub\Sub, and select the appropriate trigger to start the scenario.

Add the OCR Space Node
Select the OCR Space node from the app selection panel on the right.

OCR Space
Configure the OCR Space
Click on the OCR Space node to configure it. You can modify the OCR Space URL and choose between DEV and PROD versions. You can also copy it for use in further automations.
Add the Google Cloud Pub\Sub Node
Next, click the plus (+) icon on the OCR Space node, select Google Cloud Pub\Sub from the list of available apps, and choose the action you need from the list of nodes within Google Cloud Pub\Sub.

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Authenticate Google Cloud Pub\Sub
Now, click the Google Cloud Pub\Sub node and select the connection option. This can be an OAuth2 connection or an API key, which you can obtain in your Google Cloud Pub\Sub settings. Authentication allows you to use Google Cloud Pub\Sub through Latenode.
Configure the OCR Space and Google Cloud Pub\Sub Nodes
Next, configure the nodes by filling in the required parameters according to your logic. Fields marked with a red asterisk (*) are mandatory.
Set Up the OCR Space and Google Cloud Pub\Sub Integration
Use various Latenode nodes to transform data and enhance your integration:
- Branching: Create multiple branches within the scenario to handle complex logic.
- Merging: Combine different node branches into one, passing data through it.
- Plug n Play Nodes: Use nodes that don’t require account credentials.
- Ask AI: Use the GPT-powered option to add AI capabilities to any node.
- Wait: Set waiting times, either for intervals or until specific dates.
- Sub-scenarios (Nodules): Create sub-scenarios that are encapsulated in a single node.
- Iteration: Process arrays of data when needed.
- Code: Write custom code or ask our AI assistant to do it for you.

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Save and Activate the Scenario
After configuring OCR Space, Google Cloud Pub\Sub, and any additional nodes, don’t forget to save the scenario and click "Deploy." Activating the scenario ensures it will run automatically whenever the trigger node receives input or a condition is met. By default, all newly created scenarios are deactivated.
Test the Scenario
Run the scenario by clicking “Run once” and triggering an event to check if the OCR Space and Google Cloud Pub\Sub integration works as expected. Depending on your setup, data should flow between OCR Space and Google Cloud Pub\Sub (or vice versa). Easily troubleshoot the scenario by reviewing the execution history to identify and fix any issues.
Most powerful ways to connect OCR Space and Google Cloud Pub\Sub
Google Cloud Storage + OCR Space + Google Cloud Pub\Sub: When a new image file is uploaded to Google Cloud Storage, extract the text from the image using OCR Space and publish the extracted text to a Google Cloud Pub/Sub topic.
Google Cloud Pub\Sub + OCR Space + Slack: Trigger OCR on images received via Pub/Sub messages, then send the extracted text to a specified Slack channel.
OCR Space and Google Cloud Pub\Sub integration alternatives
About OCR Space
Need to extract text from images or PDFs? Use OCR Space in Latenode to automatically process documents and integrate the data into your workflows. Automate invoice processing, data entry, or compliance checks. Latenode adds flexible logic, file parsing, and destinations to your OCR results, scaling beyond single-document processing.
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About Google Cloud Pub\Sub
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FAQ OCR Space and Google Cloud Pub\Sub
How can I connect my OCR Space account to Google Cloud Pub\Sub using Latenode?
To connect your OCR Space account to Google Cloud Pub\Sub on Latenode, follow these steps:
- Sign in to your Latenode account.
- Navigate to the integrations section.
- Select OCR Space and click on "Connect".
- Authenticate your OCR Space and Google Cloud Pub\Sub accounts by providing the necessary permissions.
- Once connected, you can create workflows using both apps.
Can I automatically process scanned invoices using OCR and Pub/Sub?
Yes, you can. Latenode's visual editor simplifies this process. Extract data with OCR Space, then use Pub/Sub to trigger downstream processes like accounting or data warehousing. Enjoy scalable, reliable automation.
What types of tasks can I perform by integrating OCR Space with Google Cloud Pub\Sub?
Integrating OCR Space with Google Cloud Pub\Sub allows you to perform various tasks, including:
- Automatically extracting data from scanned documents and sending it to subscribers.
- Creating a real-time document processing pipeline for archiving and indexing.
- Triggering alerts in Pub/Sub based on specific keywords found in scanned images.
- Building an automated invoice processing system with data validation.
- Routing scanned forms to different departments based on identified content.
How does Latenode handle OCR Space API rate limits efficiently?
Latenode's advanced scheduling and queue management prevent exceeding API limits. You can also use JavaScript blocks for custom error handling.
Are there any limitations to the OCR Space and Google Cloud Pub\Sub integration on Latenode?
While the integration is powerful, there are certain limitations to be aware of:
- OCR Space's free tier has limitations on the number of API requests per hour.
- Google Cloud Pub/Sub message size limits may impact large data transfers.
- Advanced OCR Space features might require a paid subscription.