Catch soft 404 and error pages from sitemaps with Snapshot Site, Slack, and Google Sheets
UnknownUnknown. This template uses community nodes we can't verify statically. Uses community nodes that can't be verified statically (unverified community packages are off by default in 3.0). Static check, last run 2026-10-19.
Community nodes
These come from third-party npm packages. In n8n 3.0 unverified community packages are off by default (N8N_UNVERIFIED_PACKAGES_ENABLED=false).
n8n-nodes-snapshot-site(Analyze Page for Error Content)
Nodes used (9)
- Schedule Trigger
n8n-nodes-base.scheduleTrigger - HTTP Request
n8n-nodes-base.httpRequest - Code
n8n-nodes-base.code - Loop Over Items (Split in Batches)
n8n-nodes-base.splitInBatches - Snapshot Site
n8n-nodes-snapshot-site.snapshotSite - If
n8n-nodes-base.if - Edit Fields (Set)
n8n-nodes-base.set - Google Sheets
n8n-nodes-base.googleSheets - Slack
n8n-nodes-base.slack
What it does
Quick overview This workflow runs daily to fetch your sitemap.xml, sample a set of URLs, analyze each page with Snapshot Site to detect soft 404s and other error-page signals, log the results to Google Sheets, and post a Slack digest (or a sitemap-fetch failure alert). How it works 1. Runs every day at 5AM on a schedule. 2. Fetches your sitemap.xml over HTTP and extracts all <loc URLs, deduplicating and sampling up to a capped number for the day. 3. Sends each selected URL to Snapshot Site Analyze with quality checks enabled to capture HTTP status, title, headings, blank-page detection, CAPTCHA detection, and a screenshot link. 4. Classifies each result as ok, soft-error, hard-error, blank, captcha, or unreachable based on the returned quality/status fields and title/H1 pattern matching. 5. Appends all audited URL results to a Google Sheets tab for historical tracking. 6. Builds a single Slack digest that reports coverage and lists only problem URLs, posting either the problem report or an all-clear message. 7. Posts a dedicated Slack alert and stops reporting a clean run if the sitemap cannot be fetched or parsed. Setup 1. Install the community node n8n-nodes-snapshot-site and add Snapshot Site API credentials. 2. Add a Slack credential and set the target channel (for the error report, all-clear, and sitemap-failure messages). 3. Add Google Sheets credentials, set the spreadsheet URL/ID, and create a sheet tab named “Soft 404 Findings” with matching columns for the appended fields. 4. Update the sitemap URL in the HTTP request step to point to your site’s sitemap.xml (use a full https:// URL, and point to a child sitemap if you currently use a sitemap index).