Plain-language explanations of DPI, print size, and getting images print-ready.
Two units that get confused constantly — and why it matters for print.
Find an image's current DPI and pixel dimensions in seconds, right in your browser.
Where these two numbers came from, and when each one actually applies.
What editing a DPI value actually does — and why it isn't the same as adding detail.
Exact A4 pixel dimensions at 300 DPI, plus a comparison across common PPI values.
The exact pixel dimensions an 8×10 photo needs at 300 DPI and other common resolutions.
Pixel dimensions for every standard poster size, from 8×10 to 24×36 and A-series.
