Show HN: PrintPixel Tool – Client-side image print size and quality calculator

Check image print size, calculate resolution, analyze aspect ratios, and test print quality. Upload a photo or enter dimensions — everything runs locally in your browser.

See how large your image can be printed at 300, 240, 200 and 150 PPI — in inches and centimeters.

Read the real pixel dimensions, megapixel count, aspect ratio and orientation straight from the file.

Get an honest, practical verdict on whether a photo will print well at the size you want.

Files are decoded in your browser and never sent to a server. Nothing is stored or shared.

Drag and drop a photo, or click to browse. We support JPEG, PNG, WebP, GIF, BMP and AVIF where your browser can decode them.

The analyzer reports pixel dimensions, megapixels, aspect ratio, orientation, format and file size — all read locally from the file.

Choose a common photo or paper size, or enter any target. The tool calculates the pixels required and the effective resolution.

See the effective PPI for your chosen viewing distance and a plain-English recommendation — including whether cropping may be needed.

Ratings are practical guidance for typical close-up viewing, not scientific guarantees. As viewing distance grows, lower resolutions become acceptable.

Plenty of detail for close-up photo prints.

High-quality prints; sharp at normal viewing distances.

Fine for larger prints and most viewing distances.

Acceptable when viewed from a distance, soft up close.

Best printed smaller or viewed from well away.

At arm's length or across a room, lower PPI still looks fine.

Convert pixels to print size, or print size to pixels, at any resolution.

Will your image print well at this size and viewing distance?

Analyze dimensions, megapixels, aspect ratio and orientation.

Simplify any ratio and check whether cropping would be needed.

Convert pixel dimensions to inches, centimeters or millimeters.

Calculate maximum print dimensions in inches and centimeters from image pixel dimensions.

A4 dimensions at 150, 200, 240 and 300 PPI.

A3 dimensions at 150, 200, 240 and 300 PPI.

A plain-English guide to print sizes and resolution.

No sign-up, no uploads, no watermarks. Drop a photo in and see exactly how large it can print.