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Compress an image to 30 KB

Thirty kilobytes keeps a headshot sharp while staying under strict form limits.

  • Nothing is uploaded. Your browser does the compression, so the file stays on your device.
  • Lands under the real limit. We aim a little below it, so the upload goes through first time.
  • Fast. A 30 second 1080p clip fits into 10 MB in about two seconds on a desktop.
Where are you sending it?

Custom size 30 KB. We aim for 29 KB, a small safety margin so the file never lands just over.

Sent to our servers: 0 bytes. It all happens in this tab.

When you need 30 KB

Application photos, school and university portals, and ID uploads that cap at 30 KB.

What to expect

A headshot comes out around 400 pixels wide with good detail.

How big a picture fits in 30 KB

Rough pixel sizes at good quality. The tool checks the real result, so treat these as a guide.

What it isAbout this many pixels
Detailed photo (landscape, crowd)310 x 210
Typical photo or headshot380 x 250
Scan, signature or screenshot of text660 x 440

How we hit the number

We try the highest quality that fits. If the picture still will not fit even at a lower quality, we reduce the pixel size a step at a time until it does. Photos are saved as JPEG by default, which every form accepts. You can switch to WebP or PNG with the format menu.

The target we aim for is 29 KB, which is 900 B under 30 KB, so the file is not turned away over a few bytes.

Questions people ask

Is 30 KB enough for a passport photo upload?

For an online form that asks for it, yes. For an official passport application, follow the photo rules of that office, which often care about pixel size more than file size.

Related

Limits change. We link the official page wherever there is one, and the safety margin means a small change is unlikely to matter. Last updated 2026-11-09.