# Report post-deploy visual regressions with Snapshot Site: n8n workflow

> Started by another system calling it, and works across GitHub and Slack. 9 steps, 2 branches, 1 loop or waits: a working afternoon to understand properly.

Source: https://millionrounds.com/workflow/report-post-deploy-visual-regressions-with-snapshot-site (Millionrounds; every figure on the page links to its filing or article)

[Automation library](https://millionrounds.com/workflows) · [Content](https://millionrounds.com/workflows?category=Content#library)

# Report post-deploy visual regressions with Snapshot Site

Started by another system calling it, and works across GitHub and Slack. 9 steps, 2 branches, 1 loop or waits: a working afternoon to understand properly.

Medium

[Download free](https://millionrounds.com/login?next=%2Fapp%2Fworkflow%2Freport-post-deploy-visual-regressions-with-snapshot-site)

**9 steps** Medium: a working afternoon

**2** Branches: places the flow splits

**1** Loop or waits

**2** Services it connects to

## The flow

Starts it 1 Logic 4 Service 4

The steps in the order they run, from what starts it.

- 1 **When a Deploy Finishes** Webhook *Starts it*
- 2 **Wait for Deploy to Settle** Wait *Logic*
- 3 **Compare Deploy to Baseline** Snapshot Site *Service*
- 4 **Check for API Error** If *Logic*
- 5 **Notify Comparison Failure on Slack** Slack *Service*
- 6 **Check for Layout Regression** If *Logic*
- 7 **Notify Visual Regression on Slack** Slack *Service*
- 8 **Create Visual Regression Issue on GitHub** Github *Service*
- 9 **No Visual Regression** No Op *Logic*

## How it's built

- **Starts on:** Another system calling it
- **Steps:** 9, with 2 branches, 1 loop or waits
- **Size:** Medium: a working afternoon
- **Connects to:** GitHub, Slack
- **Model:** None. This is plumbing, not judgement

## Questions

What does it need to run?

An n8n account, plus your own GitHub and Slack accounts. You connect your own accounts after importing it; none are included.

What starts it?

It starts on another system calling it.

Does it use AI?

No. Every step is fixed logic or a call to a service, so it does the same thing every time.

How long does it take to set up?

Plan an afternoon. 9 steps is enough that you should read each one before running it.

How do I import it?

Copy the workflow, open a new workflow in n8n and paste. The steps appear on the canvas, ready for your own accounts.

**Before you run it**

Nothing here has been tested by us. It is somebody's working automation, read and described from its own steps. Treat the connections it wants as a list of accounts it will touch, and read the 9 steps before you point it at anything that matters.

## Run it in n8n

- **Create your n8n account** Free to start. n8n is where the workflow runs. [Create an n8n account ↗](https://millionrounds.com/n8n)
- **Download the workflow** Free with a Millionrounds account. [Download free](https://millionrounds.com/login?next=%2Fapp%2Fworkflow%2Freport-post-deploy-visual-regressions-with-snapshot-site)
- **Paste it into n8n** Open a new workflow in n8n and paste. Then connect your own accounts.

Stored with the author's traces removed: canvas notes, instance identifiers, saved credential names and any live document they had left behind.

## Connects to

Each opens the other workflows that use it.

[GitHub](https://millionrounds.com/workflows?service=GitHub#library)[Slack](https://millionrounds.com/workflows?service=Slack#library)

## Workflows like it

Also content, with the same services where possible, closest in size first.

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- [**Repurpose blog posts into social content with Gemini** 9 steps · Google Sheets, RSS](https://millionrounds.com/workflow/repurpose-blog-posts-into-social-content-with-gemini)