Validate email hero images with Gmail, Dropbox, OCR.Space and Google Sheets

by Sasikala Jayamani ✓ · 11 views · created 2026-02-25 · Document Extraction, AI Summarization

What this workflow does

This workflow has 10 nodes and runs manually, when you click “Execute workflow”. Along the way it connects Gmail and Google Sheets.

How it runs

Trigger: Manually, when you click “Execute workflow”.

1. Get many messages (Gmail): get many
2. Extract Hero Image SRC From HTML (Code): runs custom JavaScript code
3. Convert Image File from HTML to Binary (HTTP Request): calls an HTTP API
4. Convert Image File from Dropbox to Binary (HTTP Request): calls an HTTP API
5. Extracting Actual Image Content from OCR (HTTP Request): calls an HTTP API (POST)
6. Extracting Expected Image Content from OCR (HTTP Request): calls an HTTP API (POST)
7. Combine Image Outputs (Merge): merges the data from its input branches
8. Extract Content Match Results (Code): runs custom JavaScript code
9. Log Image Checks to Excel (Google Sheets): append or update

Services it uses

GmailGoogle Sheets

Before you upgrade to n8n 3.0

Nodes used (6)

• Manual Triggern8n-nodes-base.manualTrigger
• Gmailn8n-nodes-base.gmail
• Coden8n-nodes-base.code
• HTTP Requestn8n-nodes-base.httpRequest
• Mergen8n-nodes-base.merge
• Google Sheetsn8n-nodes-base.googleSheets

From the author

How it works Expected Image Download The expected image’s Dropbox URL is passed directly into an HTTP Request node, which downloads the image as binary data. Actual Image Extraction The HTML node extracts the src of the image from the email (e.g., hero image…

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