How to Crop a 4x6 Photo on Your Phone — No App Needed
Already have a portrait on your phone and need it as a 4x6 cm photo for a Vietnamese passport, ID card, or application? This guide shows you how to crop a 4x6 photo on your phone right in the browser — no app to install, no Photoshop, and still the correct ratio.
Before You Crop: What a 4x6 Photo Needs
A compliant 4x6 photo is 4 × 6 cm, which is 472 × 709 pixels at 300 DPI, with a white background and the face filling about 75% of the frame. See the full breakdown in Vietnam passport photo size — how many pixels.
Choosing the source photo
Pick a front-facing, well-lit shot where your shoulders and the top of your head are visible. The sharper the original and the larger your face in the frame, the more likely the final 4x6 file meets the 300 DPI requirement.
Steps to Crop a 4x6 Photo on Your Phone
- Open your browser (Safari on iPhone or Chrome on Android) and go to the crop 4x6 photo tool.
- Select a portrait from your photo library. A front- or rear-camera shot both work.
- The system detects your face and frames it to 4x6 cm with correct eye position and head-to-shoulder ratio — no manual edge-dragging.
- To swap the background or resize an existing photo to 4x6, use the edit 4x6 photo tool.
- Download the compliant 4x6 file, ready to submit online or print.
Phone or Computer?
Both give the same result because processing runs in the browser. A phone is convenient since your photos are already there; a computer is easier when submitting online via the public service portal, with a larger screen and a more stable connection.
Common Mistakes When Cropping a 4x6 Yourself
- Stretching the image: dragging it to "fit the frame" distorts the face — let the tool frame it by ratio.
- Cutting off the head or shoulders: too tight a crop loses the headroom a passport photo needs.
- Source too small: upscaling a low-resolution photo makes the 4x6 file pixelated, below 300 DPI.
- Background not white: a shadowed or colored home background needs replacing with uniform white.
Crop a 4x6 Photo Right on Your Phone
Upload from your library — AI auto-frames to 4x6, switches to a white background, and runs a compliance check in about 60 seconds.
Start NowSee also: how to take a passport photo at home and why ID photos get rejected.
Note
The 4x6 specifications here reflect the rules of Vietnam's Ministry of Public Security and the National Public Service Portal as of June 2026. Requirements may change; verify the latest information with the receiving office before submitting.