About Jet Hu

Jet Hu is a software developer who builds web and mobile apps. PrintSizer started from a recurring problem: most print calculators give you a number, but not the reasoning, the trade-offs, or the real-world result.

This site documents the formulas, shows worked examples, and tests print output in real life so you can make a confident decision before you order. Where something has not been tested, the site says so.

How the content is made

• Calculators are built in plain HTML, CSS and JavaScript and run locally in the browser.
• Print-lab pages use physical prints from commercial print services, documented with photos and the test conditions.
• Results are limited to what was actually observed; viewing distances and materials that were not tested are not presented as facts.
• Corrections are welcome through the contact page.

Why a pen name?

Jet Hu is a pen name. The person behind the site prefers to keep personal details private while publishing practical, testable information under a consistent identity. The AdSense account and the legal operator details are held separately in Google's systems.

Explore the print lab

300 vs 150 vs 72 DPI print test · A3 150 DPI close-up test · 30 x 40 cm 200 DPI test · How we test