Symptoms

When attempting to open a PNG image, neoStampa displays the following error message:

Error: file format '\Downloads\IMG.PNG' is not valid for this application. Unable to load the file.

The image cannot be imported or opened.


Cause

This error commonly occurs when the PNG file is saved as a 16-bit PNG. Some applications and workflows only support 8-bit PNG images, and therefore cannot process 16-bit PNG files.

Although the file extension is .PNG, the bit depth of the image may be incompatible with the application.


Solution

Convert the image from 16-bit PNG to 8-bit PNG using an image editing application such as:

  • Adobe Photoshop

  • GIMP

Adobe Photoshop

  1. Open the PNG file in Photoshop.

  2. Select Image > Mode > 8 Bits/Channel.

  3. Save the file as a new PNG image.

  4. Try opening the new file in neoStampa.

GIMP

  1. Open the PNG file in GIMP.

  2. Select Image > Precision.

  3. Change the precision to 8-bit Integer.

  4. Export the image as a PNG file.

  5. Open the exported file in neoStampa.


How to verify the bit depth

In most image editing applications, the image properties will indicate whether the PNG is:

  • 8-bit (supported)

  • 16-bit (may not be supported)

If you are unsure, send the image file to Technical Support for verification.


Additional Information

If the error persists after converting the image to 8-bit PNG, please provide:

  • The original PNG file

  • A screenshot of the error message

  • The neoStampa version being used

  • The calibration printer scheme being used

Technical Support can then investigate whether another file compatibility issue is present.