Image Resizer PCWhat size should a passport photo be?
The standard passport photo is 3.5 × 4.5 cm. Image Resizer PC lets you type those centimetres directly and set the DPI, so you don't have to guess pixel counts. At 300 DPI, 3.5 × 4.5 cm works out to roughly 413 × 531 px — the app does that math for you.
Many online application portals also cap the file weight. A common target is under 50 KB, though some ask for a 20–50 KB range and others allow more. If your portal lists a different number, use that exact figure — when in doubt, check your specific portal's requirement.
- Dimensions: 3.5 × 4.5 cm (≈ 413 × 531 px at 300 DPI)
- File weight: often under 50 KB — confirm your portal's cap
- Format: JPG is the safest choice for most passport uploads
- Background: a plain, light background is usually required by the portal
Why compress a passport photo to 50 KB — and keep it on your PC
Most web-based resizers make you upload a photo of your face and identity document to a server you don't control, then hand it back one file at a time. For a passport photo, that's exactly the kind of image you don't want sitting on a stranger's server.
Image Resizer PC does the whole job locally. There's no upload, no account, no watermark and no ads — the photo never leaves your computer. You get the exact 50 KB (or whatever your cap is) and the right centimetres in one pass, and you can batch several photos at once if you're applying as a family.
Staying sharp at a small KB target
When you push a photo down toward 50 KB, the app runs a binary search over JPG quality to find the highest quality that still fits under your target, and downscales only if it has to. That gives you the best-looking result for the size you asked for.
Be honest with yourself about limits: a crisp face photo at 50 KB usually looks great, but if a portal forces something very small, some quality loss is unavoidable. Start from the sharpest original you have, size to 3.5 × 4.5 cm first, and only then tighten the KB so you're not throwing away detail you need.