How to Auto-Post New Blog Articles to Social Media (Step-By-Step)

What you'll build: A Zap that watches your blog's RSS feed and automatically queues a social media post in Buffer every time a new article goes live.

What you'll learn: How to find your site's RSS feed URL, how to connect it to Zapier, and why queuing a post in Buffer beats letting anything auto-publish straight to your audience untouched.

Zapier is the connector here, but Buffer is the actual tool doing the social media work, it's purpose-built for scheduling and queuing posts, which makes it a better fit than trying to post directly to each platform from Zapier alone.

Step 1: Find your blog's RSS feed URL

Most blogging platforms generate one automatically. Common patterns to try: yoursite.com/feed, yoursite.com/rss.xml, or yoursite.com/blog/rss. If you're not sure, check your CMS's documentation or search "[your platform] RSS feed URL." You'll need this exact URL in Step 2.

Step 2: Create the Zap and connect the RSS trigger

1. Go to zapier.com, log in, click Create, then Zaps.
2. Click the 1. Trigger box, search for RSS by Zapier, and select it.
3. Under Event, choose New Item in Feed, then click Continue.
4. In the Feed URL field, paste your blog's RSS feed URL from Step 1. Click Continue.
5. Click Test trigger. Zapier pulls in your most recent published post, check that the title and link look correct, then click Continue.

Step 3: Connect Buffer as the action

1. Click + to add a step. Search for Buffer and select it.
2. Under Event, choose Create Post (some accounts show this as Add to Queue), then click Continue.
3. Sign in to your Buffer account. Click Continue.
4. Under Profile, select which connected social account this post should go to (Instagram, LinkedIn, X, etc.).
5. In the Text field, click inside it and use the insert-data icon to combine real fields, for example: New post: [Title from Step 1]. Read it here: [Link from Step 1]. A bare title and link reads like spam. If you have a moment, add a short line of your own commentary before publishing rather than sending it exactly as generated.
6. Click Continue, then Test step. Open Buffer and confirm the post appears in your queue with the right content.

Step 4: Turn it on

1. Click Publish, then toggle the Zap to On.
2. Publish a new test post on your blog and confirm it appears in Buffer's queue within a few minutes.

Why queuing beats auto-publishing

Buffer's queue means the post sits there for you to glance at and adjust before it actually goes out, not blast onto your feed the second the Zap fires. A title-and-link post with zero personality reads like a press release; thirty seconds editing the caption before it publishes is the difference between content that gets engagement and content people scroll past.

Common mistakes

• Pasting the wrong RSS feed URL (a page URL instead of the actual feed URL). Test trigger will come back empty.
• Selecting Create Post with an immediate-publish setting instead of adding it to the queue for review.
• Typing the post text manually instead of using the insert-data icon.
• Posting to the wrong Buffer profile when managing more than one client's account.
• Never checking back on the queue, so posts pile up unreviewed for weeks.

Your first step

• Find and confirm your blog's real RSS feed URL.
• Create a Zap with RSS by Zapier as the trigger and test it against a real published post.
• Connect Buffer, select the right profile, and build the post text with real inserted fields.
• Confirm the test post lands in Buffer's queue, not published live.
• Publish the Zap, toggle it on, and confirm a real new blog post queues correctly.

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