SnapAPI + N8N Integration Guide

Tips & Tricks
1

SnapAPI + N8N Integration Guide

Automate screenshots, metadata extraction, and page monitoring without writing code.

What You Can Build

N8N is a self-hostable workflow automation tool — think Zapier but open source. Connecting it to SnapAPI takes about five minutes and unlocks:

  • Screenshot monitor — trigger on a schedule, screenshot a list of URLs, save to disk or upload to S3
  • OG tag audit pipeline — read URLs from a Google Sheet, call SnapAPI metadata, write PASS/FAIL results back to the sheet
  • Competitor tracker — weekly workflow that calls /v1/analyze on competitor pages and logs CTA text + tech stack changes to a database
  • PDF archiver — on any HTTP trigger (webhook, form submit, schedule), convert a URL to PDF and email it as an attachment

Prerequisites

  • N8N running locally (npx n8n) or on N8N Cloud
  • A SnapAPI API key — free at snapapi.tech (100 calls/month, no credit card)

Store your API key as an N8N credential:
Settings → Credentials → New → Header Auth

  • Name: SnapAPI
  • Header name: x-api-key
  • Header value: your_key_here

Step-by-Step: Screenshot Any URL

1. Add a Manual Trigger node

In a new workflow, click + and search for “Manual Trigger”. This lets you test the workflow by clicking “Execute Workflow” manually. Later, replace it with a Schedule or Webhook trigger.

2. Add an HTTP Request node

Click + after the Manual Trigger. Search for “HTTP Request”.

Configure it:

  • Method: GET
  • URL: https://snapapi.tech/v1/screenshot
  • Authentication: Header Auth → select the SnapAPI credential you created
  • Query Parameters:
    • url → {{ $json.url }} (or hardcode a URL to test: https://example.com)
    • format → png
    • full_page → false
  • Response Format: File

3. Add a Write Binary File node

Click + after the HTTP Request node. Search for “Write Binary File”.

Configure it:

  • File Name: screenshot-{{ $now.format('yyyy-MM-dd') }}.png
  • Property Name: data (this is where N8N stores the binary response from the HTTP Request node)

4. Execute

Click Execute Workflow. A PNG file will appear in your N8N working directory (or configured output path).

Minimal Workflow JSON

Copy this into N8N via Import from JSON (menu → Import → paste):

Import this, connect your SnapAPI Header Auth credential, swap https://example.com for your target URL, and execute.

Three More Workflow Ideas

  • Google Sheets OG Audit: Schedule Trigger → Google Sheets (read URLs from column A) → Loop Over Items → HTTP Request to /v1/metadata → Google Sheets (write og_title, og_image, og_description, PASS/FAIL to columns B–E). Full site audit, results land in a spreadsheet automatically every Monday.

  • Webhook-triggered PDF: Webhook Trigger (POST with { "url": "..." }) → HTTP