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← Sydium
Free Tool

Post Preview & Mockup

See how your post will look before publishing. Create platform-accurate mockups and download as PNG.

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Post Preview Tips

Visualize First

Previewing your post before publishing helps catch formatting issues and ensures your content looks professional.

Watch the Length

Keep an eye on the character count. Each platform has different limits—what works on LinkedIn may be too long for Twitter.

Stay On-Brand

Use mockups to ensure your visual style is consistent across all platforms.

Test Variations

Try different text and image combinations to see what looks best before committing to a post.

Want to preview and publish in one click?

Sydium shows real-time previews for every platform and publishes instantly.

Try Sydium Free

Frequently Asked Questions

How accurate are the post mockups?

Our mockups capture the essential layout, colors, and structure of each platform. They're designed to give you a realistic preview of how your content will appear, though minor details may differ from the actual platforms.

Can I download the mockup?

Yes! Click 'Download as PNG' to save a high-quality image of your mockup. Great for client presentations, content planning, or sharing with your team for approval.

Which platforms are supported?

Currently Instagram, Twitter/X, LinkedIn, and Facebook. We chose these four as they represent the most common platforms for text and image posts.

Is my content stored anywhere?

No. Everything happens in your browser. Your text, images, and mockups are never sent to our servers. When you close the page, everything is gone.

Can I use these mockups for client presentations?

Absolutely! The PNG download feature is designed exactly for this. Show clients how their content will look on different platforms before publishing.

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