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FileMyLove

A PNG Has a Checkerboard: Is It Really Transparent?

Test a PNG against coloured backgrounds to distinguish baked-in checkerboard pixels from transparency, then inspect cutout edges before exporting.

By FileMyLove2 min read

A downloaded logo may look transparent until a grey-and-white rectangle follows it into your design. The checkerboard may be part of the picture. A PNG filename alone is not enough to decide.

Support does not guarantee transparency

The W3C PNG specification describes the alpha channel as optional. A PNG can contain transparent and opaque areas, or be entirely opaque.

FileMyLove's editor places a checkerboard behind the preview to help reveal transparent areas. A grid saved into the image by its creator is different. Renaming or converting the file to PNG does not remove those pixels.

Try contrasting background colours

  1. Open a copy in Edit image without running background removal yet.
  2. Choose a background colour unlike grey or white, such as strong pink.
  3. Inspect the expected empty area inside the image, not just padding outside it.
  4. Change colour again and compare.
Observation What to check
New colour shows through empty areas Those areas contain transparency
Grey-and-white grid stays unchanged The grid may be stored in the image
Colour changes only outside the picture Its interior may still be opaque
Old colour remains at object edges Zoom in before using the result

This is a visual check, not a certification of every pixel.

When the grid is baked in

We recommend requesting the original transparent asset first. Otherwise, try Remove background on a copy and inspect both the object and the grid. Pay attention to small lettering, interior holes and details similar in colour to the background.

AI can remove the wrong details or leave grid fragments. Changing the background colour alone is not background removal. See the cutout-edge checklist for imperfect results.

Reopen the downloaded file

Choose transparent background and PNG to retain empty areas. Use the download rather than a screenshot, which can capture the visible preview grid. The editor caps the long side at 2048 pixels; retain the original separately.

Test the exported image in its destination on light and dark backgrounds. For JPG delivery, read PNG, JPG and transparency.