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Photo size checker

See a photo’s exact size in KB, pixels, DPI and print size, then check it against the rules of the form you’re filling in — US visa, UK or India passport, UPSC, SSC — and fix what fails in one click.

I want Check the photo

Settings appear once you add a photo.

Done on your device No upload, no queue, no sign-up.

Bytes sent anywhere: 0 B

Works offline after you’ve used it once.

How to use it

Your photo goes into this browser tab, is measured on your device against the rule you pick, and comes back as a pass or a list of what to fix. 0 bytes uploaded

  1. Add your files

    Drop the photo, and choose the form or print size it’s for — or just measure it.

  2. Check the settings

    Press Check the photo. Its bytes, pixels, DPI tag, color profile and real format are read in this tab and compared with the rule.

  3. Save the result

    See what passes and what fails. Fix it opens the photo in Resize or Compress Image, already set to the right size.

Why it doesn’t upload

Passport, visa and exam photos are identity documents. Checking one shouldn’t mean handing a face and a name to another website first. The photo is measured in this tab and nothing about it leaves your device.

How to check for yourself

Worth knowing

  • It checks the file, not the face. Size, pixels, format and DPI are measured exactly; whether the head is the right size, the background plain and the lighting even is still up to you and the portal.
  • Rules change and portals differ. Each rule shows where it comes from and when it was last checked; your own form’s instructions win if they disagree.
  • KB can mean 1,000 or 1,024 bytes depending on the site, so both are shown. The check uses 1,000, the stricter of the two.

KB, pixels and DPI: three different sizes

KB is how much space the file takes: what an upload limit like “under 240 KB” measures. It depends on the pixels and on how hard the picture is compressed, so the same photo can be 90 KB or 900 KB. Compress Image changes this without changing the pixels.

Pixels are the picture’s width and height in dots: what “600 × 600” means. Forms that name exact pixels will refuse anything else, even a pixel off. Resize Image crops and scales to an exact size.

DPI is a label saying how many of those pixels to print per inch. It sets the print size in cm or inches and nothing else. 1200 pixels at 300 dpi prints 4 inches wide; the same file at 72 dpi claims to be 16.7 inches, but it is the same picture.

The photo rules this checks

US visa (DS-160), Schengen visa, UK passport online, India passport (Passport Seva), UPSC photos and signatures, SSC signatures (SSC now takes the photo live), the 20–50 KB photo many other exam forms ask for, and print sizes at 300 dpi. Each rule comes from the upload limits page, which lists the source and the date it was last checked. Every exam notification can change its numbers, so check the one for your exam too.

Questions

How do I check a photo’s size in KB?

Drop it here: the exact size is shown in bytes and in KB, both ways — 1 KB as 1,000 bytes and as 1,024, since upload forms differ. On Windows, right-click the file → Properties shows it too; on a Mac, select it and press ⌘I; on an iPhone, swipe up on the photo in Photos.

How do I check a photo’s size in cm, mm or inches?

A digital photo has pixels, not centimeters: its print size depends on how densely it’s printed. The checker shows both answers — the size at the DPI written in the file, and the size at 300 dpi, the standard for sharp prints. At 300 dpi, 600 pixels is 2 inches, or 5.08 cm.

Why does the form say my photo is invalid when it looks fine?

Usually one of four things: it’s over the size limit in KB, it isn’t the exact pixel size the form wants, it isn’t really a JPG (iPhone photos are often HEIC with a .jpg name), or it’s in the Display P3 color profile some portals reject. Choose your form here and the one that fails is marked, with a button to fix it.

What size should a US visa photo be?

For the DS-160 upload: a square JPEG between 600×600 and 1200×1200 pixels, no bigger than 240 KB. For printed photos, 2 × 2 inches (51 × 51 mm). Choose US visa (DS-160) above to check yours, and see every photo rule with its source.

Does DPI matter for an online form?

Rarely. DPI is a note inside the file telling a printer how densely to print; it changes nothing about the pixels. A few portals do ask for it, and printers do. If a form insists on 300 dpi, set the DPI under Advanced in Resize Image and it is written into the file as it saves.

Read more about this

Next steps

Often used before or after Photo Size Checker. These run on your device too.