Read Etsy rules and Listsy defaults separately
Etsy currently accepts PNG as a digital buyer-file format and permits up to five files with a maximum of 20 MB per file. Etsy does not require every PNG to be 3000 by 3000 pixels or carry 300 DPI metadata.
Listsy uses those dimensions and metadata as its current PNG specification. The checker reports both sets of facts so a Listsy warning is not mistaken for an Etsy rule.
| Check | Source | Meaning |
|---|---|---|
| PNG and 20 MB or less | Published Etsy buyer-file rule | The format and size fit that current attachment rule |
| 3000 by 3000 | Listsy PNG specification | The canvas matches Listsy's launch output |
| 300 DPI metadata | Listsy PNG specification | The file records the intended density |
| Transparent pixels | Listsy PNG specification | The decoded file contains actual alpha below 255 |
The file stays on your device
The checker uses browser file APIs, PNG header data, and a temporary in-memory canvas. It does not submit the file to Listsy or another service. Reloading or closing the page clears the result.
A very large image may be skipped during the decoded transparency scan to protect browser memory. Header facts can still be reported when available.
A technical check cannot review the whole product
The tool does not know whether you own the design, whether the wording is correct, whether edge quality is acceptable, or whether the buyer's software supports the intended use. It also cannot inspect a ZIP manifest when you select only the PNG.
Use the result as one file check. Review the artwork, package, listing copy, mockups, disclosure, and Etsy draft separately.
What to do when a check needs attention
A warning should lead to a specific next step. Fix the file only when the result conflicts with the product you intend to sell; do not change a valid Etsy file merely to satisfy a Listsy-specific default.
| Finding | Practical next step |
|---|---|
| File is over 20 MB | Optimize the file or split the buyer package without removing anything promised in the listing. |
| Canvas is not 3000 by 3000 | Decide whether the file needs to match Listsy's specification. Etsy itself does not require this exact canvas. |
| No transparent pixels found | Inspect the transparency and alpha mask. Confirm that transparency is part of the product promise before changing the file. |
| DPI metadata is missing | Add the intended metadata if your product specification requires it. Remember that metadata does not create more pixels. |
| Decoded pixel scan was skipped | Treat the transparency result as incomplete. Open the PNG over contrasting backgrounds and inspect it in an image editor. |
Before you rely on the result
Sources checked
Policy and marketplace details can change. These are the pages used for this review. Check Etsy directly before making a listing decision.