Keep Your Cool With n8n’s Most Powerful Lesser-Known Features | by Jannis Douloumis | Apr, 2025 | Medium


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Embedding Images in Workflows

The article demonstrates how to embed images into n8n workflows using a Sticky Note node and markdown. This allows users to reference diagrams or flowcharts directly within their workflow.

  1. Upload image online
  2. Create a Sticky Note node
  3. Use markdown: ![Description](https://your-image-url.com/image.png#fullwidth)

The #fullwidth tag ensures the image fits the note's width.

Pin and Edit Test Data

The article explains how to pin output data during workflow testing. This allows users to retain and reuse test data across multiple workflow executions, particularly beneficial for cost-sensitive operations like LLM inference.

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Keep Your Cool With n8n’s Most Powerful Lesser-Known Features

Are you just getting started with n8n? Or perhaps you’ve been using it for a while but feel like you’re missing some efficiency tricks? You came to the right place to avoid broken workflows, and eliminate frustrating moments from now on.

Let’s dive into some practical tips that will help you build faster, cleaner, and more confidently with n8n!

Embedding Images in Your Workflows

I often start designing workflows in tools, where I can quickly sketch a flowchart. Then, I want to reference that diagram as I build the actual workflow in n8n.

Here’s how to do it:

  1. Upload your diagram/image somewhere online
  2. Create a Sticky Note node in your workflow
  3. Use this markdown expression to embed the image:
![Description](https://your-image-url.com/image.png#fullwidth)

The #fullwidth tag ensures the image's width is controlled by the note's width.

Pin and Edit Test Data

When testing workflows, n8n allows you to pin output data. This means every time you run your workflow, it will save and keep the same test data. Especially for LLM inference, this can be a moneysaver…

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