🧑‍🦯Improve your website accessibility with GPT-4o and Google Sheet

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Important notice

This workflow is provided as-is. Please review and test before using in production.

1. Workflow Overview

Tags: Accessibility, SEO, Blogging, Marketing, Automation, AI, Web Auditing Context Hey! I’m Samir, a Supply Chain Engineer and Data Scientist from Paris, and the founder o...

Best for

Content Creation automation workflows
Multimodal AI automation workflows
intermediate n8n builders looking for reusable templates

Tools used

n8n-nodes-base.stickynote, n8n-nodes-base.manualtrigger, n8n-nodes-base.splitinbatches, n8n-nodes-base.set, n8n-nodes-base.googlesheets, n8n-nodes-base.if, n8n-nodes-base.limit, @n8n/n8n-nodes-langchain.openai

Source and attribution

This workflow is cataloged by N8N Workflows and links back to its original n8n.io source page by Samir Saci.

Original n8n.io source

1.1 Workflow description

Title: 🧑‍🦯Improve your website accessibility with GPT-4o and Google Sheet
Workflow name: 🧑‍🦯Improve your website accessibility with GPT-4o and Google Sheet

Tags: Accessibility, SEO, Blogging, Marketing, Automation, AI, Web Auditing

Context

Hey! I’m Samir, a Supply Chain Engineer and Data Scientist from Paris, and the founder of LogiGreen Consulting.

In my personal blog, I share insights on how to use AI, automation, and data analytics to improve logistics, operations, and digital sustainability practices.

> Have you heard about accessibility?

In this workflow, I use n8n to improve the quality of alternative texts for images on my personal website.

📬 For business inquiries, you can connect with me on LinkedIn

Who is this template for?

This workflow is for:

Bloggers and website owners who want to improve accessibility
SEO professionals looking to boost page performance
Web developers and product teams automating web audits

What does it do?

This n8n workflow:

🔍 Downloads the HTML of a blog or web page
🖼️ Extracts all <img> tags and their alt attributes
📉 Detects missing or too-short alt texts
🤖 Sends those images to GPT-4o (with vision) to generate new alt descriptions
📄 Saves the results into a Google Sheet, updating the alt text when needed

How it works

Set a page URL using the Set node
Download HTML content
Extract image src and alt using a Code node
Store results in a Google Sheet
Filter images with altLength < 50
Send image URL to GPT-4o
Update the Google Sheet with the newly generated newAlt text

The AI alt texts are concise, descriptive, and accessibility-compliant.

What do I need to get started?

You’ll need:

A Google Sheet to store the audit results
An OpenAI account with GPT-4o access

Follow the Guide!

Follow the sticky notes in the workflow or check my tutorial to configure each node and start using AI to improve the accessibility of your website.

🎥 Watch My Tutorial

Notes

GPT-generated alt texts are limited to ~125–150 characters for best results
Use this to comply with WCAG and improve Google indexing
Easily adapt it to audit multiple domains or e-commerce catalogues

This workflow was built using n8n version 1.85.4
Submitted: April 21, 2025

1.2 Logical Blocks

This catalog entry is organized from the workflow JSON. The node-level section below shows the executable blocks available for review before importing the template.

2. Block-by-Block Analysis

Block 1 - Sticky Note4

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 2 - When clicking ‘Test workflow’

Type / Role: n8n-nodes-base.manualTrigger - manualTrigger
Config choices: Version 1

Block 3 - Loop Over Items

Type / Role: n8n-nodes-base.splitInBatches - splitInBatches
Config choices: Version 3

Block 4 - Sticky Note1

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 5 - Page Link

Type / Role: n8n-nodes-base.set - set
Config choices: Version 3.4

Block 6 - Download Results

Type / Role: n8n-nodes-base.googleSheets - googleSheets
Config choices: Version 4.5

Block 7 - altLength < 50

Type / Role: n8n-nodes-base.if - if
Config choices: Version 2.2

Block 8 - Limit records

Type / Role: n8n-nodes-base.limit - limit
Config choices: Version 1

Block 9 - Generate altText

Type / Role: @n8n/n8n-nodes-langchain.openAi - openAi
Config choices: Version 1.8

Block 10 - Update Results

Type / Role: n8n-nodes-base.googleSheets - googleSheets
Config choices: Version 4.5

Block 11 - Sticky Note

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 12 - Store Results

Type / Role: n8n-nodes-base.googleSheets - googleSheets
Config choices: Version 4.5

Block 13 - Download HTML

Type / Role: n8n-nodes-base.httpRequest - httpRequest
Config choices: Version 4.2

Block 14 - Get Images urls with altText

Type / Role: n8n-nodes-base.code - code
Config choices: Version 2

3. Summary Table

Workflow	🧑‍🦯Improve your website accessibility with GPT-4o and Google Sheet
Complexity	intermediate
Nodes	14
Categories	Content Creation, Multimodal AI
Author	Samir Saci
Published	21 Apr 2025

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

Use the JSON export at /data/workflows/3640/3640.json as the source template for this automation.
2. Import the template into n8n

Open n8n, import the downloaded JSON, and review each node before activating the workflow.
3. Configure credentials and variables

Replace placeholder credentials, API keys, webhook URLs, account IDs, and environment-specific values with your own settings.
4. Test with sample data

Run the workflow manually or in a staging workspace, inspect node output, and confirm downstream systems receive the expected data.
5. Activate and monitor

Enable the workflow only after testing, then monitor executions, errors, and rate limits during the first production runs.

5. General Notes & Resources

Review imported nodes carefully before activation. This catalog entry is intended to help you inspect the workflow structure, understand required services, and find related templates faster.

Node names, credentials, schedules, webhook paths, and external service limits may need adjustment for your workspace.

Download workflow JSON Original n8n.io source Content Creation workflows Multimodal AI workflows

Frequently asked questions

What does 🧑‍🦯Improve your website accessibility with GPT-4o and Google Sheet do?

Tags: Accessibility, SEO, Blogging, Marketing, Automation, AI, Web Auditing Context Hey! I’m Samir, a Supply Chain Engineer and Data Scientist from Paris, and the founder o...

What do I need before importing this workflow?

Review the workflow JSON, configure any required credentials in n8n, and test the automation in a safe workspace before using it in production.

Can I customize this workflow?

Yes. Use the block-by-block analysis and the downloadable JSON to inspect each node, then adjust credentials, prompts, schedules, filters, or destinations for your Content Creation, Multimodal AI use case.

Samir Saci

31 workflows

Nodes

n8n-nodes-base.stickynote n8n-nodes-base.manualtrigger n8n-nodes-base.splitinbatches n8n-nodes-base.set n8n-nodes-base.googlesheets n8n-nodes-base.if n8n-nodes-base.limit @n8n/n8n-nodes-langchain.openai

Complexity

intermediate

Published 21 Apr 2025

Likes 0

View on n8n.io Download Workflow

Install path: /data/workflows/3640/3640.json

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🧑‍🦯Improve your website accessibility with GPT-4o and Google Sheet

Workflow preview

Important notice

1. Workflow Overview

Best for

Tools used

Source and attribution

1.1 Workflow description

Context

Who is this template for?

What does it do?

How it works

What do I need to get started?

Follow the Guide!

Notes

1.2 Logical Blocks

2. Block-by-Block Analysis

Block 1 - Sticky Note4

Block 2 - When clicking ‘Test workflow’

Block 3 - Loop Over Items

Block 4 - Sticky Note1

Block 5 - Page Link

Block 6 - Download Results

Block 7 - altLength < 50

Block 8 - Limit records

Block 9 - Generate altText

Block 10 - Update Results

Block 11 - Sticky Note

Block 12 - Store Results

Block 13 - Download HTML

Block 14 - Get Images urls with altText

3. Summary Table

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

2. Import the template into n8n

3. Configure credentials and variables

4. Test with sample data

5. Activate and monitor

5. General Notes & Resources

Frequently asked questions