Korean resumes, exam applications (college entrance, civil service), and employee badges often require a "half-namecard size" (banmyeongham, 반명함) photo. It's a different size from a standard passport-style ID photo (3.5x4.5cm), so using an existing ID photo as-is won't match the required ratio. Here's the exact spec and how to make one yourself.
Half-namecard size reference
| Use | Width x Height (cm) | Pixels at 300dpi | Ratio |
|---|---|---|---|
| Half-namecard (banmyeongham) | 3 x 4 | 354 x 472 | 3 : 4 |
| Standard ID photo (passport/resident ID) | 3.5 x 4.5 | 413 x 531 | 7 : 9 |
| Namecard size (myeongham-pan) | 5 x 7 | 591 x 827 | 5 : 7 |
300dpi is the standard for printing. For online-only submissions, 200dpi (236 x 315px) or higher is enough. If the place you're submitting to specifies an exact pixel size, follow that instead.
"Half-namecard" (banmyeongham, literally "half business-card") is a term that comes from old Korean photo studio print sizes. The exact dimensions are 3cm wide x 4cm tall, and it's also called "banmyeongham-pan."
How to make a half-namecard photo with Dagochim
- Open the ID Photo Maker tool.
- Drag in your own photo or click to select it. A front-facing photo taken in good lighting gives the best result.
- Pick Half-namecard 3x4cm from the size list.
- Line up your face and size with the on-screen guide (the green/orange oval). Clicking ✨ Auto-fit face lines it up roughly for you.
- If your background isn't white, turn on AI background fill to make it white.
- Download the finished photo. It saves as a JPG file.
Converting an existing ID photo to half-namecard size
If you already have a 3.5x4.5cm ID photo from a studio, switch the size to "Half-namecard" in Dagochim's tool and re-adjust the face position. Simply shrinking the image won't work, because the ratio changes (7:9 → 3:4), which distorts the face or adds padding — you need to re-fit the crop, not just resize.
Printing multiple copies
If you need to print several half-namecard photos, use Dagochim's 4x6 print layout feature. It arranges multiple half-namecard photos onto a single 10x15cm print sheet. When printing, set "actual size (100%)" and turn off "fit to page" to get the exact physical size.
What to watch for when submitting
- File format: Most forms ask for JPG (JPEG). If you saved as PNG, convert it with Dagochim's Image Format Converter.
- File size limit: Every application system has a different cap (e.g. under 200KB). If your file is too large, re-save it at a slightly lower quality.
- Background color: White is the safe default unless the form says otherwise.
- Watch retouching: Heavy skin smoothing or filters can get a photo rejected because it no longer matches your face for identification purposes.
Is my data safe?
Yes. Dagochim's ID Photo tool never uploads your photo to a server — everything is processed entirely inside your browser. Face detection and background removal both run locally on your own device.
Frequently asked questions
What's the difference between half-namecard size and standard ID/passport photo size?
Half-namecard is 3cm wide x 4cm tall, while a Korean passport/resident ID photo is 3.5cm x 4.5cm. If the form asks for "half-namecard," use 3x4cm; if it asks for a "standard ID photo," use 3.5x4.5cm.
What's the pixel size for a half-namecard photo?
At 300dpi, that's 354 x 472 pixels. If it's for an online submission rather than printing, 200dpi (236 x 315px) or higher is enough.
Can I turn a studio-taken ID photo into a half-namecard photo?
Yes. Using a 3.5x4.5cm ID photo as-is will leave it slightly cropped or padded since the ratio is different. Switch the size to "Half-namecard" in Dagochim's ID Photo tool and re-adjust the face position for a clean result.