Run automated SEO audits with Screaming Frog CLI, PageSpeed, PDF and Excel fixes

💡 What this workflow does

Type #Audit https://clientsite.com in Slack. Walk away. Get a professional PDF report and a structured Excel fix sheet delivered to Google Drive and posted back in your Slack thread — fully automated, zero manual work.

Built for SEO agencies and freelancers who deliver technical audits at scale.

👇 Check out the deliverables: 📄 View Sample PDF Report 📊 View Sample Excel Fix Sheet

📦 What You Get

• 20–50 page PDF report: Includes a health score, Core Web Vitals, broken links, On-Page SEO, issue cards with fix explanations, a priority action plan, and an SEO glossary.
• Excel fix sheet: 18 tabs (one per issue type), containing every URL and exact fix instructions — ready to hand off to a developer.
• Cloud Storage: Both files are saved to your Google Drive /SEO Audits folder automatically.
• Slack Delivery: Links to the generated files are posted directly back into your original Slack thread.

⚙️ How It Works

1. A Slack message containing #Audit and a URL triggers the workflow.
2. A POST request starts the crawl via your self-hosted Screaming Frog CLI API (built with Python + FastAPI, exposed publicly through a Cloudflare Tunnel — no static IP needed).
3. The workflow polls the API every 2 minutes until the status is done, timeout, or failed.
4. The crawl ZIP is downloaded and decompressed, triggering two simultaneous branches:

• Branch A (Executive Report): SEO Audit Parser → PageSpeed Insights → PSI Parser → Report Builder → HTML to PDF → Google Drive.
• Branch B (Developer Sheet): Full Data Parser → Tab Builder → Excel File Builder → Google Drive.

1. Both Google Drive links are merged, logged to a Google Sheet, and posted back into the Slack thread.

🛠️ Key Technical Features

• Streaming CSV Parser: Easily handles large crawl files up to 500MB without causing timeouts or memory crashes.
• Smart File Optimization: Auto-skips massive all_inlinks.csv and all_anchor_text.csv files (reduces the unzipped payload from ~450MB to ~15MB).
• Advanced 403 Error Logic: Splits 403 errors into three actionable categories:
• Your own site blocking the crawler (WAF/Cloudflare)
• Known bot-blocked platforms (Twitter, Wikipedia)
• Unknown external links requiring a manual check
• Archive Page Filtering: Removes tags, pagination, feeds, and search pages from all issue counts so your data isn't skewed.
• Dynamic Health Score (0–100): Algorithmically weighted by critical vs. warning issues.
• Universal CMS Support: Works flawlessly with WordPress, Blogger, Shopify, and any other crawlable CMS.

📋 What You Need

⚠️ Required n8n Environment Variables

To ensure the workflow can process large sites without timing out, add these to your n8n .env file:

N8N_DEFAULT_BINARY_DATA_MODE=filesystem
EXECUTIONS_TIMEOUT=7200
N8N_RUNNERS_TASK_TIMEOUT=7200
NODE_OPTIONS=--max-old-space-size=8192

🚀 Quick Setup

1. API Setup: Deploy the SF CLI API on your Windows machine/server and expose it via Cloudflare Tunnel.
2. Link the Crawler: Update the Start Crawl node URL and Bearer token with your tunnel URL and API secret.
3. PageSpeed Insights: Replace the PSI API key in the Page Speed Insights HTTP node with your own.
4. Cloud Storage: Set your Google Drive Folder ID in both upload nodes, and your Google Sheets Spreadsheet ID in the Append row node.
5. Branding:

• In the Report Builder code node, update the AGENCY config object (around line 125) with your name, email, and tagline.
• In the Input Cleaner node, set the watermark value to your agency's name.

📞 Support & Custom API Access

Note: The custom Python/FastAPI backend required to orchestrate Screaming Frog is not included in this JSON template. If you want to set up the complete system, please reach out:

📧 Email:[email protected] 🔗 LinkedIn: Salman Mehboob