Nouplo

Resize to a 30×40 mm ID photo

354 × 472 pixels, the 3×4 cm format used for résumés, student cards and many national ID forms.

Drop files here

or click to choose from your deviceAccepted: JPG, JPEG, PNG, WEBP, AVIF, GIF, BMP, HEIC, HEIF

Up to 3 files per runUp to 20 MB per file5 runs per dayRemove limits with Pro✓ Works offline

Your files stay on your device

This tool runs entirely in your browser. Nothing is uploaded, nothing is stored, and you can even turn off your internet connection before you start.

Example

A 3 × 4 cm photo for a Japanese résumé, from a phone portrait, under 200 KB

An English teacher applying for a job in Japan needs a 3 × 4 cm photo on the rirekisho, the Japanese résumé, and the recruiter’s online form takes a JPG of 200 KB at most. The photo is a 3024 × 4032 pixel phone portrait taken against a light wall.

A 3 × 4 cm photo for a Japanese résumé, from a phone portrait, under 200 KB — Before
Before
A 3 × 4 cm photo for a Japanese résumé, from a phone portrait, under 200 KB — After
After
  1. Choose the photo. “Fill and crop” is preselected and a 3:4 frame appears; as the photo is already 3:4, the frame covers all of it at first.
  2. Pull a corner in and drag the frame over head and shoulders, the head about three quarters of the height with a little space above the hair.
  3. Leave Output format on “Same as original” and set “Keep the file under” to 200 KB.
  4. Press Resize to 30×40 mm and download the file.
Setting Value
Photo 3024 × 4032 px JPG from the phone
Fit Fill and crop (recommended)
Output format Same as original (JPG)
Keep the file under 200 KB
Result 354 × 472 px JPG under 200 KB, marked 300 dpi

The file is exactly 354 × 472 pixels, 30 × 40 mm at 300 dpi, named like the original with -354x472 added. To get under 200 KB only the JPG quality is lowered, never the pixel count. For a paper résumé, print it at 100 % and it measures 3 × 4 cm.

How it works

  1. Drop the portrait onto the box, or choose it from your phone. A photo taken against a plain light wall works best.
  2. Fill and crop is preselected. A 3:4 frame appears on the photo; drag it over your face and pull a corner to size it.
  3. Press Resize to 30×40 mm. The output is exactly 354 × 472 pixels, which is 30 × 40 mm printed at 300 dpi.
  4. Download it. Print it on photo paper at 300 dpi, or attach it to the online form as it is.

Frequently asked questions

Why 354 × 472 pixels?
30 mm ÷ 25.4 × 300 = 354 and 40 mm ÷ 25.4 × 300 = 472. That is the 3×4 cm format at 300 dpi, the resolution print shops and government upload forms expect.
Which documents use 3×4 cm?
Japanese and Korean résumés and student cards, Brazilian RG, CNH and carteira de trabalho, and school and employer forms in several other countries. Passports are usually 35×45 mm instead: use the 35×45 mm preset for those.
Does the file say 300 dpi?
Yes. A JPG or PNG comes out marked 300 dpi, so photo software and print shops open it at 30 × 40 mm. The pixel count, which is what matters, is exact either way (a WebP file carries no dpi mark).
How much of my face should fill the frame?
Most rules put the head at roughly three quarters of the height with a small gap above it. Size the frame that way before pressing the button; the tool does not detect faces, so the framing is yours.
How big is 3 × 4 cm in inches?
30 × 40 mm is about 1.18 × 1.57 inches: smaller than the 2 × 2 inch US passport photo, and a different shape (3:4, not square). A US passport or visa photo needs the 2 × 2 inch size, not this one.
How do I print it at exactly 3 × 4 cm?
Print at 100 % or “Actual size”, not “Fit to page”, which would enlarge it to the paper. The file is marked 300 dpi, so its 354 × 472 pixels then measure 30 × 40 mm; cut along the edge of the picture.
Is my photo uploaded anywhere?
No. The crop and resize run in your browser, so a photo of your face never leaves your device. The free plan covers 3 files per run, 20 MB per file and 5 runs a day; Pro removes those limits.

Made for a specific use

Related tools

• Resize image Scale one or many images to exact dimensions or pick a ready-made social media size. • Crop image Drag a frame over the photo, see exactly what stays, and crop it without sending it anywhere. ⇲ Compress image Make JPG, PNG and WebP files smaller for email, websites and messaging apps, right in your browser. ▥ Passport photo print sheet One photo, framed once, repeated on photo paper at 300 dpi. Several ID photos for the price of one print.