Create Branded Social Media Images with Bannerbear (Sync/Async modes)

Automatically create branded social media graphics, certificates, thumbnails, or marketing visuals using Bannerbear's template-based image generation API. Bannerbear's API is primarily asynchronous by default: this workflow shows you how to use both asynchronous (webhook-based) and synchronous modes depending on your needs.

What it does

This workflow connects to Bannerbear's API to generate custom images based on your pre-designed templates. You can modify text, colors, and other elements programmatically.

By default, Bannerbear works asynchronously: you submit a request, receive an immediate 202 Accepted response, and get the final image via webhook or polling. This workflow demonstrates both the standard asynchronous approach and an alternative synchronous method where you wait for the image to be generated before proceeding.

How it works

1. Set parameters - Configure your Bannerbear API key, template ID, and content (title, subtitle) 2. Choose mode - Select synchronous (wait for immediate response) or asynchronous (standard webhook delivery) 3. Generate image - The workflow calls Bannerbear's API with your modifications 4. Receive result - Get the image URL, dimensions, and metadata in PNG or JPG format

Async mode (recommended): The workflow receives a pending status immediately, then a webhook delivers the completed image when ready.

Sync mode: The workflow waits for the image generation to complete before proceeding.