QRix
Hit exactly 1200×1800 — a 4×6 inch photo print at the full 300 DPI print shops want.
Loading the image workspace…
4×6 inches is the standard photo print, and at the 300 DPI that print labs ask for it works out to 1200×1800 pixels. Sizing the file yourself before uploading is worth the minute it takes, because if the ratio does not match the paper the lab's software will crop it for you — often taking the top of someone's head. A 4×6 print is a 2:3 frame, which happens to match most DSLR and mirrorless sensors exactly, so those photos fit with no cropping at all. Phone photos are usually 4:3 and will lose a strip from two sides in fill mode. If the composition cannot survive that, use fit and accept a white border, which many people prefer to a bad crop anyway.
1200×1800 at 300 DPI, which is the resolution most print labs specify. At 200 DPI you could get away with 800×1200, but prints look noticeably softer.
Phone photos are typically 4:3 while a 4×6 print is 2:3. Something must be trimmed to fit, so it is better to choose the crop yourself here than let the lab guess.
It is the standard for prints viewed at arm's length. Lower resolutions can look acceptable on larger prints seen from further away, but 300 DPI is the safe target.
No. It produces a correctly sized file but cannot add detail — a small original will still print soft. Start from the largest version you have.
No. Resizing runs entirely in your browser with the Canvas API, so the file never leaves your device and nothing is stored or transmitted.
It's free, private and works right in your browser — no signup, no watermark.