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FitKB

Photo ID

Passport Size Photo Maker 35x45mm Online

35×45 mm is the most widely used passport and visa photo size, used for example for UK passports and Schengen visas. FitKB crops your photo to that shape at 300 DPI and keeps the file under your size limit. Always check the official rules of the form you are filling.

Your photo

Original: —

Result

The compressed photo appears here. The Download button below turns on when it is ready.

New size
—
Exact
—
Limit
50,000 bytes
Dimensions
—
Quality
—
Saved
—
Settings
KB
px
px
30 %

0 keeps the top of the photo, 100 keeps the bottom. Used when cropping.

How to use the Passport Size Photo Maker 35x45mm

  1. Take a plain photo

    Stand in front of a plain light wall in even light, face the camera, keep a neutral expression and leave space above your head.

  2. Upload it

    Tap the upload area and choose the photo. FitKB crops it to the 35×45 mm shape at 300 DPI (413×531 pixels).

  3. Adjust the framing

    Use the Vertical framing slider to move the crop up or down until your head and the top of your shoulders sit in the frame.

  4. Match the form's KB limit and download

    Set the size limit your form states (50 KB is the default), check the preview and tap Download.

Output specification

These are the starting settings for this page. You can change every one of them in the Settings panel above.

Passport Size Photo Maker 35x45mm output specification
Print size35 × 45 mm
Pixel size413 × 531 px (300 DPI)
Size limit50 KB by default, adjustable
CropFills the frame, framing adjustable
BackgroundKept as photographed; use a plain light wall

Methodology, privacy and accuracy

  • Runs on your device. The photo is decoded and re-encoded with the browser's Canvas API. It is never uploaded, so passport photos and signatures stay private.
  • How the size is reached. FitKB tries the highest JPEG quality first, then binary-searches the quality until the file is at or under the limit. Dimensions are reduced only when quality alone cannot reach it, and never for fixed-size photos.
  • Safe for strict forms. The limit is applied as KB × 1000 bytes, so the file passes whether a portal counts 1 KB as 1000 or 1024 bytes. Metadata such as GPS location is not copied into the new file.
  • Tested. The size search and crop calculations are covered by automated tests.
  • Last reviewed: .

Frequently asked questions

Does this check biometric rules like head size?

No. FitKB crops, sizes and compresses the photo, but it does not measure head position, lighting or expression. Follow the official photo guidance of the issuing authority.

Why 413 × 531 pixels?

35 mm and 45 mm converted at 300 dots per inch give 413 × 531 pixels, a standard print resolution for photo prints.

Are my photos uploaded to a server?

No. The photo is decoded, resized and compressed inside your browser with the Canvas API. Nothing is uploaded, so ID photos and signatures never leave your phone or computer.

Why is the result a little under the KB limit instead of exactly on it?

Upload forms reject files that are even one byte over the limit, and some count 1 KB as 1000 bytes while others use 1024. FitKB stays at or under the limit times 1000 bytes, which passes both checks, and picks the highest quality that fits.

Can I use photos from an iPhone (HEIC)?

Yes in Safari, and when you pick a photo through the iPhone photo picker it is usually converted to JPG automatically. If another browser cannot open a HEIC file, export it as JPG (Share, then Save as JPEG) and try again.

Learn more

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