Why Is My Smart Object Design Filling the Entire Canvas in My PSD Mockup Template?

Learn how to fix PSD mockups where Smart Objects stretch your design across the entire canvas by correcting the internal Smart Object boundaries.

Hey, thanks for sending the file and I could see the problem.
So it goes beyond that.
So let me check the template and give you a rectification.
So this is the template, repress control t.
This looks nice.
This is good.
But I press double click on the smart object clear.
There you see.
Okay.
I mean the template has not been set properly.
And when we place a design over here, it basically covers the entire canvas.
So imagine this color is our design of red color.
So this has not been set properly.
I mean this smart object over here has not been set properly.
So simple fix.
Press control t on now here.
Test out.
Sorry.
Yeah, all good.
That’s it.
Sorry.
I mean this auto select selected.
My spacebar is not working.
I’m not sure why.
So yeah, this is the fix.
Next time when it comes, it will place.
So I’ll delete this.
I’ll put it with any color.
Black color maybe.
I’ll send it as file and it should ID the work.
And yeah, that’s it.
I mean, there is some extension that is required.
So I’ll stretch this.
Yeah, that’s all.

Step-by-Step Guide

This issue occurs because the Smart Object inside your PSD template has not been set up with the correct boundaries. When Bulk Mockup places your design, it uses the Smart Object’s internal canvas size. 

If that internal canvas extends across the full PSD area, the placed design will also stretch across the entire workspace, resulting in an oversized, full-canvas design instead of fitting neatly into the intended mockup frame.

To correct this, you must adjust the Smart Object’s transform settings so that the internal container matches the visible mockup area.

Here is how to fix it properly:

  1. Open the PSD template and locate the Smart Object layer that Bulk Mockup should replace.
  2. Double-click the Smart Object to open it in a new tab. You’ll notice the design area fills the entire canvas incorrectly.
  3. Press Ctrl+T (Transform) inside the Smart Object and resize the bounding box so it matches the intended placement area within the mockup.
  4. Adjust the frame – Scale inward or outward as needed so the design area aligns exactly with the product surface.
  5. Save (Ctrl+S) and close the Smart Object window.
  6. Place a test color or dummy graphic to confirm the design now appears only inside the correct region.
  7. Export and test again using Bulk Mockup.

Once the Smart Object’s internal boundaries are corrected, Bulk Mockup will place all future designs accurately without stretching or covering the entire canvas.

KEY TAKEAWAY:

Your design stretches across the whole canvas because the Smart Object’s internal size is incorrect. Resize it once, and Bulk Mockup will place designs perfectly every time.

FAQ

Why was my design stretching across the entire canvas?

This happens because the Smart Object’s internal canvas is incorrectly sized. Bulk Mockup places your artwork inside that full-sized Smart Object, causing the design to stretch across the whole PSD instead of the intended mockup area.

How does resizing the Smart Object fix the issue?

Resizing the Smart Object adjusts the placement boundaries, ensuring the internal document matches the visible product frame. Once corrected, Bulk Mockup places new designs only within that transformed region instead of filling the entire document.

Do I need to recreate the Smart Object if it’s incorrect?

No. You usually only need to transform the existing Smart Object using Ctrl+T, reposition it correctly, and save. This approach preserves the original mockup but fixes the layout so that designs are placed accurately.

Will Bulk Mockup work automatically after correcting the bounding box?

Yes. Once the Smart Object boundaries are fixed, Bulk Mockup detects the updated layer and inserts designs only inside that corrected area, resolving stretching, oversizing, and misalignment issues.

Can this error appear in other templates as well?

Absolutely. Any template with improperly sized Smart Object canvases can produce this problem. Checking and correcting the Smart Object boundaries is a reliable way to prevent similar issues across multiple PSD files.

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