You wrote a great technical article on Dev.to. Now you want to reach more developers by publishing it on Medium and Hashnode too. But you've heard cross-posting can hurt your SEO. What should you do?

The good news: cross-posting is safe and recommended — as long as you do it right. This guide covers everything you need to know.

Why Cross-Post at All?

Each developer blogging platform has a different audience:

Dev.to — Active developer community, great for tutorials and deep-dives. High engagement through comments.
Medium — Broader tech audience, potential for viral reach through algorithmic distribution. Monetization via Partner Program.
Hashnode — Growing developer community with custom domain support. Great for building a personal brand.
LinkedIn — Professional network. Articles here reach recruiters and hiring managers.

By publishing on multiple platforms, you can 3-5x your readership without writing more content.

The Canonical URL Problem (And How to Fix It)

⚠️ Critical: If you publish identical articles on multiple platforms without canonical URLs, Google may see them as duplicate content and choose the wrong version to index — or worse, not index any of them.

What is a Canonical URL?

A canonical URL tells search engines: "This is the original version of this content." When you set a canonical URL on Medium or Hashnode pointing to your Dev.to post, Google knows:

The Dev.to version is the original
All link equity should flow to the Dev.to version
The other versions are syndicated copies (not duplicates)

How to Set Canonical URLs

On Dev.to: This is usually your original, so no canonical URL needed. Dev.to auto-generates one.

On Medium: In the story editor, click the three-dot menu → "More settings" → "Canonical link" → paste your Dev.to URL.

On Hashnode: In the post editor, go to "Advanced" → "Canonical URL" → paste your Dev.to URL.

💡 Pro tip: Always publish on your primary platform first, wait for Google to index it (check with site:your-url), then cross-post with canonical URLs.

Method 1: Manual Cross-Posting (Free but Tedious)

Here's the step-by-step process for doing it manually:

Write and publish on Dev.to first
Copy the Dev.to URL for canonical reference
Open Medium, create a new story, paste your content
Set the canonical URL to your Dev.to article
Adjust formatting — Medium handles some markdown differently than Dev.to
Publish on Medium
Repeat for Hashnode — paste content, set canonical URL, adjust formatting
Repeat for LinkedIn — write a concise version (LinkedIn articles should be shorter)

Time required: 30-60 minutes per article for 3-4 platforms.

Common Formatting Issues

Code blocks: Dev.to and Hashnode use triple backticks; Medium needs code blocks inserted via UI
Images: You'll need to re-upload images on each platform
Embeds: Dev.to supports Liquid tags; Medium and Hashnode use different embed syntax
Frontmatter: Dev.to and Hashnode use YAML frontmatter; Medium doesn't

Method 2: Use MultiPost AI (Automated)

This is where MultiPost AI comes in. Instead of the 30-60 minute manual process, you can:

Write your article once in the MultiPost AI markdown editor
Select all platforms you want to publish to
AI adapts your content for each platform automatically
Canonical URLs are set automatically
Click publish — all platforms in one go

Time required: 2 minutes. The AI handles:

Content adaptation (technical depth for Dev.to, narrative style for Medium, concise for LinkedIn)
Canonical URL setup across all platforms
Image handling and formatting conversion
Markdown compatibility across platforms

Try MultiPost AI Free →

SEO Best Practices for Cross-Posting

1. Always Use Canonical URLs

We can't stress this enough. Without canonical URLs, you're risking duplicate content penalties. Set them on every non-primary platform.

2. Publish on Your Primary Platform First

Wait 1-2 days for Google to index your original post before cross-posting. This ensures Google recognizes your primary version first.

3. Customize Each Version Slightly

Even with canonical URLs, adding platform-specific introductions, examples, or conclusions can improve engagement. MultiPost AI does this automatically.

4. Cross-Link Between Platforms

Add "Originally published on Dev.to" with a link at the top of each cross-posted version. This helps both readers and search engines find the original.

5. Track Performance Separately

Each platform has different analytics. Track views, reads, and engagement per platform to understand where your audience is.

Dev.to Cross-Posting FAQ

Does cross-posting hurt Dev.to SEO?

No — as long as you set canonical URLs on the other platforms pointing back to Dev.to. Dev.to's SEO is not affected, and you gain additional readership from other platforms.

Should I cross-post everything?

Not necessarily. Cross-post your best evergreen content that has broad appeal. Platform-specific content (like Dev.to challenges) may not perform well on Medium.

What about Dev.to's built-in cross-posting?

Dev.to can automatically cross-post to Twitter when you publish, but it doesn't cross-post full articles to Medium or Hashnode. For that, you need a tool like MultiPost AI or manual posting.

Can I use the Dev.to API to automate this?

Yes, Dev.to has a public API. You could technically build your own cross-posting script, but you'd need to handle authentication, markdown conversion, canonical URLs, and content adaptation for each platform yourself. MultiPost AI handles all of this out of the box.

Conclusion

Cross-posting from Dev.to to Medium and Hashnode is one of the highest-ROI activities for developer content creators. You write once and reach 3-5x more readers. The key is using canonical URLs and adapting content for each platform.

Whether you do it manually (30-60 min per article) or use MultiPost AI (2 minutes), the important thing is to start cross-posting and expanding your reach.

How to Cross-Post from Dev.to to Medium and Hashnode