Passport, visa and ID systems are unforgiving: the photo must be an exact size — the US passport wants 600×600 pixels, many countries want 35×45mm at 300 DPI, and file size is often capped too. Get any dimension wrong and the upload is rejected.
Step 1 — Understand the Requirement
Requirements come in two flavours:
- Pixels (e.g. 600×600) — ready to use directly for a digital upload.
- Millimetres at a DPI (e.g. 35×45mm at 300 DPI) — convert to pixels first: mm ÷ 25.4 × DPI. So 35mm × 45mm at 300 DPI = 413×531 pixels.
Step 2 — Crop to the Right Aspect Ratio First
If your source photo is 4:3 but the passport wants a square, resizing alone will squash the face. Use Crop Image to cut the correct aspect ratio (1:1 for 600×600) around the head and shoulders before you resize — that keeps proportions natural.
Step 3 — Resize to the Exact Pixels
Open Resize Image, enter the target width and height, and export. Because you already cropped to the matching ratio, the output will be sharp and undistorted.
Step 4 — Get a Clean Background if Needed
Many ID photos require a plain white or blue backdrop. The Remove Background tool can swap a messy background for a regulation white/blue/red before you finalise.
Step 5 — Meet the File-Size Cap
If the portal also limits size to, say, 240KB, finish with Compress Image at quality ~80. All of this runs locally, so your ID photo is never uploaded to a stranger's server — a real concern for identity documents.