How to keep 300 DPI
- Drop your TIFF and check its pixel dimensions in the preview.
- Keep original size or set a target long edge (e.g., 3600 px for 12" at 300 DPI).
- Export JPGs, then set the desired 300 DPI metadata in your image editor or layout app.
Changing a DPI tag does not add image detail. Preserve enough pixels and confirm physical print size in your layout app.