Skip to main content
OS Authority

Compress a photo to under 50 KB

Admission, job and ID forms often cap photos at 50 KB. Add your photos and each one comes back as a JPG under 50 KB, as sharp as that size allows.

Your images are processed on this device and never uploaded. We don't see, store or log your files.

Common sizes

How it works

  1. Tap Choose files, or Take photo on a phone, and add JPG, PNG or WebP images.
  2. Tap Compress images. Each image is saved as a JPG under 50 KB.
  3. Download the images one by one or as a ZIP, or tap Share.

Why compress here

Your photos never leave your phone or computer, and camera location data (EXIF) is not copied into the new files. It is free, with no watermark and no account, and you can compress many images at once.

What fits in 50 KB

At good quality about 600 × 800 pixels fit in 50 KB, which prints sharply at passport size (35 × 45 mm needs only 413 × 531 pixels at 300 DPI). A 12-megapixel phone photo of about 3 MB is reduced to roughly that size; smaller or simpler images keep their full size and a higher quality.

Getting a good result

Crop to just the face and shoulders first if the form wants a portrait photo: the fewer pixels of background, the more detail the 50 KB keeps. A plain, light background also compresses better than a busy one.

Frequently asked questions

Can I compress several photos to 50 KB at once?

Yes. Add as many as you like; each one is compressed to under 50 KB on its own, and you can download them together as a ZIP.

My photo is already under 50 KB. What happens?

It is saved again as a high-quality JPG without location data, and it stays under 50 KB, so you can upload either version.

Is 1 KB 1,000 or 1,024 bytes?

Sites count it both ways. We aim for 1,000 bytes per KB, so a 50 KB file here is at most 50,000 bytes and also passes a form that counts 1,024 (51,200 bytes).

Are my images uploaded?

No. Everything happens in your browser on your own device.

Related tools