TRANSPARENCY CHECKS
A transparent canvas does not remove an opaque background
Identify white rectangles, transparent padding and colored edge halos before preparing a print canvas.
The exported PNG can have transparent outer space while retaining a white rectangle inside the design. Both can be true at once. RSPrintCanvas starts with an empty canvas, then draws the complete source image on it. Opaque pixels already in that source remain part of the exported artwork.
Check the source before selecting a canvas size
Open the original on a checkerboard or contrasting background in an image viewer that supports transparency. If a white rectangle covers that background, the rectangle is part of the source. The file extension alone does not settle the question: a PNG can contain fully opaque pixels. A screenshot of a transparent design displayed on white is also an opaque screenshot unless transparency was preserved during capture.
Understand what the fit operation adds
RSPrintCanvas scales and centers the complete image inside a transparent outer canvas. Empty outer space remains empty, but it does not identify a white region and cut it out. A square white source placed on a tall canvas may therefore show transparent bands above and below the white square. That result accurately reflects the source; selecting a larger margin will not remove the white square.
Inspect borders as well as large areas
After background removal in a separate editor, inspect fine lettering and edge pixels over both a dark and a light background. A faint halo may come from partially transparent pixels that still contain the old background color. Enlarging the artwork can make such edges easier to notice. Correct the prepared source rather than repeatedly resizing the same contaminated border into a larger canvas.
Validate the saved PNG independently
Download the fitted result and open it outside the tool. Confirm that transparent areas remain transparent and that every intended design element is present. Keep a clean master with transparency rather than using a flattened preview as the input. If the result is destined for a product mockup, judge the artwork on the intended product color as well as on the checkerboard.
Technical references
Background for the format or convention discussed here.
Put the example to work
Open the tool, enter your own inputs and review the result. The pixel dimensions and physical print size guide explains the workflow and its limits.
Open RSPrintCanvas