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Compress Image to 300 KB

Get a JPG, PNG or WebP under 300 KB with the best quality that fits. Files stay on your device.

Drop images here, click to choose, or paste
JPG, PNG, WebP, AVIF, HEIC, GIF, BMP. Up to 100 files. Stays in your browser.

Everything runs in your browser. Your images are not sent to our server. Sizes are shown with 1 KB = 1,000 bytes.

Compress an image to 300 KB

A 300 KB cap is typical on consulate and visa portals, CRM attachments and some mail gateways.

The target is already set to 300 KB. The tool tries the highest quality first and lowers it step by step until the file fits. It shrinks the pixel size only when quality alone cannot get under the limit. It aims slightly below 300 KB, counting 1 KB as 1,000 bytes, so the file also passes on systems that count 1,024 bytes.

What fits in 300 KB

As a JPG or WebP, a typical photo of about 1,400 by 1,400 to 2,000 by 1,300 pixels fits in 300 KB. Screenshots, logos and scans of text behave differently: flat colors compress very well, and fine texture or noise compresses poorly. If the file cannot reach 300 KB at a reasonable size, the list tells you and shows the smallest result.

Tips for reaching 300 KB

  • Keep a copy of the original. Portals sometimes reject an upload and you may have to try again with a different size.
  • A photo under 300 KB is usually accepted where the form asks for less than 300 KB, but check any minimum pixel size as well.
  • Compress from your original file. Compressing a copy that was already compressed loses more detail.

Other sizes

20 KB, 50 KB, 75 KB, 100 KB, 150 KB, 200 KB, 250 KB, 400 KB, 500 KB, 750 KB, 1 MB, 2 MB, 3 MB, 5 MB.

You can also compress JPG, PNG or WebP by format, or read the image compression guide.

Frequently asked questions

How do I compress an image to 300 KB?

Add the image. The target is already 300 KB, so the tool finds the highest quality that fits and shows the result. Download it when it looks right.

Will the image still look good at 300 KB?

Usually yes for the sizes listed on this page. If the original has far more pixels than 300 KB can hold, the tool reduces them too, so a very large photo may look smaller but not blocky.

Why does my file come out below 300 KB, not at 300 KB?

The tool aims a little under the limit on purpose, and a simple image can fit at high quality with room to spare.

What happens if my image is already under 300 KB?

Nothing is changed. The tool keeps your original file when it already fits and no resize is requested.