Ask for the final size and requirement
PPI is image pixels per inch. DPI is printer dots, a different unit.
Sources for this point: GIMP print size guide.
- What is the finished width and height?
- Are those values in inches, centimeters or millimeters?
- Does the printer want a vector file or a pixel image?
- If pixels are needed, what density does this job require?
GIMP print size settings relate physical size to existing pixels. Changing that setting alone adds no detail.
Sources for this point: GIMP print size guide.
Work through the calculation
Use this equation: required pixel width = width in inches × required PPI. Apply the same rule to height. If width is in centimeters, divide by 2.54 first. Keep the units beside each number.
| Final width | Assumed PPI | Required width |
|---|---|---|
| 2 inches | 300 | 600 pixels |
| 3 inches | 300 | 900 pixels |
| 4 inches | 150 | 600 pixels |
| 7.62 centimeters | 300 | 900 pixels |
These density values are examples, not advice for every job. If your printer asks for a different value, use it. For a 3 inch by 1 inch mark at 300 PPI, the result is 900 by 300 pixels.
You can also work backward. A 900 pixel wide mark placed at 3 inches gives 900 ÷ 3 = 300 PPI. At 6 inches, the same width gives 150 PPI.
Check the logo rather than blank canvas
Measure the useful artwork width. Imagine a 3000 pixel wide canvas with a small logo only 300 pixels across. The empty canvas does not give the logo 3000 pixels of detail. This is a size example, not a measured file.
- Open a copy and find the full boundary of the artwork.
- Include intended dots, outlines and the tagline.
- Read the useful width and height inside that boundary.
- Compare those values with your calculation.
Do not crop through a detail to get a tidy number. Note whether the requested size refers to the whole placed image or the mark itself.
A new label is not new detail
Changing a saved resolution label does not redraw a missing letter stroke. If the useful artwork is too small, seek the original or ask the printer about another accepted file. Enlarging a weak copy should not be treated as proof of print quality.
Keep the original pixel count in your notes along with the final placement size. This makes it clear what your calculation actually used.
Ask whether the printer wants vector artwork
LogoTidy offers SVG and vector PDF handoffs. Confirm printer requirements.
Sources for this point: LogoTidy file preparation guide.
Inspect the contents if you are unsure whether the file holds shapes or a pixel picture. The current kit uses RGB or sRGB; ask the printer about any required color setup. Neither a vector label nor this arithmetic certifies the job.
Prepare a clear printer handoff
Check that the useful pixel size meets the supplier request, or that the supplier accepts the chosen vector file. The proof must show the intended whole logo.
Sources
These sources support the points linked above. Each date shows when we checked that source.
- GIMP print size guide
Print size relates physical dimensions to existing pixels Checked . - LogoTidy file preparation guide
LogoTidy asks users to select complete artwork Checked .