Image Resizer PCMaking a 35×45 mm passport size photo
The standard passport-size photo is 35 × 45 mm, which is the same as 3.5 × 4.5 cm. In Image Resizer PC you type those centimetres and choose a DPI — 300 DPI gives roughly 413 × 531 px, which is sharp enough for both print and online upload.
Because real photos rarely start at a perfect 35:45 ratio, use center-crop to a fixed box. The app trims the edges to the exact shape with the face centred, instead of stretching the picture to fit. That keeps proportions natural and matches what passport and application forms expect.
- 35 × 45 mm = 3.5 × 4.5 cm — type it straight in as centimetres
- At 300 DPI that's about 413 × 531 px
- Center-crop keeps the face centred and the ratio exact
- Set a KB cap too if your online form limits file weight
Center-crop vs just resizing
Plain resizing changes the pixel count but keeps the original shape — so a wide snapshot squeezed into a tall 35×45 box would look stretched. Center-crop solves that: you set the target box, and the app cuts the image down to that exact ratio around the middle before sizing.
For a passport-size photo, crop first so the head sits in the frame the way the form wants, then let the app produce the final 35×45 mm output. If you have several people to process — a whole family's forms, say — drop the folder in and it handles them in one batch, with no limit on how many files.
Pixels, cm and staying sharp — all offline
You can work in centimetres plus DPI or in raw pixels, whichever your form specifies. cm + DPI is easiest for print and for forms that quote a physical size; pixels are handy when a portal lists an exact pixel box.
Everything happens on your PC: no upload, no account, no watermark, no ads. If your form also caps the file weight, type that KB number and the app keeps the best quality that fits. At very small targets some softening is unavoidable, so start from a clear, well-lit original. On first run Windows may warn that it protected your PC because the app is new and unsigned — click More info, then Run anyway.