One-Click Multi-Platform Publishing: WordPress + LinkedIn + Twitter Simultaneous Automation
15-step n8n workflow publishing approved content from a Google Sheet to WordPress (with featured image), LinkedIn company page, LinkedIn personal profile, and Twitter simultaneously — triggered daily at 9AM with zero manual input. 498% ROI in year one.
The Problem
Manual publishing process per piece: WordPress 30–45 min (copy-paste HTML, upload image separately, format, preview, publish) + LinkedIn company 15 min + LinkedIn personal 15 min + Twitter 10 min + sheet update 5 min = 75–90 minutes per content piece. For 20 pieces/month: 25–30 hours of manual publishing = $2,250/month ($27,000/year) in marketing manager time. In practice only 12 of 20 pieces were published — 8 sat stuck in pending. 3–5 mistakes per month: wrong featured image, missed platform, missing hashtags. Content waited 3–5 days after approval before going live.
The Solution
Scheduled n8n workflow triggering daily at 9AM. (1) Reads 'BrainLink' Google Sheet, filters rows where APPROVEDDATE is set AND PublishedDate is empty. (2) Downloads HTML blog content from Google Drive link (supports multi-stakeholder editing before approval). (3) Creates WordPress post via REST API with title, content, status: 'publish'. (4) Downloads featured image from Google Drive as binary data (direct Drive links cannot be used as WP media). (5) Uploads image to WordPress as media with content-disposition header. (6) Sets featured image on post via `POST /wp-json/wp/v2/posts/{id}` with mediaId. (7) Updates Google Sheet: clears APPROVEDDATE to prevent re-processing, sets PublishedDate. (8–9) LinkedIn conditional: if LinkedinContent column has content, posts to company page (org ID '140281') and personal profile ('bvylyeIT_3') with image — `onError: continueErrorOutput` so LinkedIn failure doesn't block Twitter. (10–11) Twitter conditional: if TweetContent column has content, posts tweet with image. (12) Instagram placeholder node for future integration.
Tech Stack
Results
- Publishing time: 75–90 minutes per piece → 60 seconds — 98% reduction
- Distribution rate: 12/20 pieces published → 20/20 (100%) — 8 pieces that previously sat stuck in 'pending' now go live automatically
- Zero publishing mistakes — no wrong featured images, no missed platforms, no copy-paste errors (was 3–5/month)
- $25,200/year in marketing labour eliminated (28 hours/month × $75/hour)
- LinkedIn failure handled via `continueErrorOutput` — one platform outage never blocks the rest
- Year-1 net savings $20,980 (setup $3,500, ongoing $720/year) — ROI 498%. Year-2+ ROI: 3,400%