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Compress image to 28KB

Compress image to 28KB by setting the limit once. Every photo comes out at 28KB or smaller, ready for forms, applications and uploads that reject large files.

Each image will be this size or smaller.

Width × height (px)

Where a 28KB limit is used

28KB limits show up on a few registration forms. It is just under 30KB, a useful margin when a form says "less than 30KB".

How to compress an image to 28KB

  1. Choose or drop your photo above. JPG, PNG, WebP and GIF all work.
  2. Leave the target at 28KB, or type a different limit in KB.
  3. Download the result. The new file size is shown next to each image.

How the size limit is reached

The tool looks for the highest image quality that still fits under 28KB. If quality alone is not enough, it reduces the pixel dimensions step by step until the file fits, so you do not have to guess settings in a photo editor.

What to expect at 28KB

A typical photo at this size ends up around 440 x 330 to 580 x 440 pixels in a 4:3 shape. A 4MB phone photo has to shrink to about 1% of its size to fit. At this size the picture has to be very small. Faces and simple shapes stay clear, while fine texture and busy backgrounds soften. Dark ink on white paper, such as a signature, compresses best.

File size is not the same as pixel size

A limit of 28KB is about the number of bytes in the file, not the width and height of the picture. A large picture can fit if it is simple, and a small picture can break the limit if it is full of detail. That is why the tool adjusts quality first and dimensions only when it has to.

Compressing several photos

Drop in up to 30 images and each one is reduced to 28KB or smaller. Photos with very different detail end up at different pixel sizes, because each one gets the best quality that fits. Download them one by one or as a ZIP.

Tips for a better result

  • Crop to the face or the signature first. Less background means more detail where it matters.
  • Use even lighting and a plain background. Shadows and noise are hard to compress.
  • If the form also states pixel dimensions, resize first with the image resizer, then compress.

Need a different limit? Try 25KB and 30KB, or browse all size presets.

Frequently asked questions

Will my photo still look good at 28KB?

For small uses such as signatures, ID photos and form uploads, yes. The tool reduces the pixel size automatically if it needs to.

Why did my image come out as JPG?

PNG files cannot be shrunk by lowering quality, so reaching a size limit usually requires JPEG. Choose WebP in Output format if you prefer it.

Can I compress a signature to 28KB?

Yes. Photograph or scan the signature on white paper, drop it in and keep the target. Dark ink on a plain background compresses very well, so signatures usually keep clean edges at this size.

Is it safe to compress ID photos to 28KB here?

Yes. The file is processed inside your browser and never uploaded, so ID photos, signatures and scans stay on your device.