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Free Image Compressor Online

APX Resizer is a free online image compressor. Lower the file size of a photo with a quality slider, or set a target size in KB or MB, and download a JPG or WEBP copy.

Open image compressor

Free. No sign-up. Your files stay in your browser.

How to compress an image

  1. Select Open image compressor and choose your photo.
  2. In Compress Image, drag the quality slider. It runs from 5% to 100% and starts at 80%.
  3. Choose JPG or WEBP as the output format.
  4. Apply the change and download the smaller image.

Quality or target size

Lower quality gives a smaller file but less detail. Mid-range values usually keep a photo looking good while cutting its size, so try a few settings and compare. If you need an exact limit, such as 200 KB, use Resize by KB / MB instead and enter that size.

JPG or WEBP?

JPG works almost everywhere. WEBP is a newer format that is often smaller at similar quality and is supported by current browsers. Pick JPG when you are unsure whether the place you are uploading to accepts WEBP.

Compression and resizing are different

Compressing reduces file size by lowering quality. Resizing changes the width and height of the picture. You can use both: resize first, then compress.

Private by design

APX Resizer works inside your browser. Your files are processed on your own device and are not uploaded to our servers. Read the privacy policy for details.

Frequently asked questions

How do I compress a JPG without losing much quality?

Open Compress Image and start at the default 80% quality. Lower it step by step and compare the result until the file is small enough while still looking good.

Can I compress a PNG?

You can open a PNG, but the compressor saves the result as JPG or WEBP. Transparent areas may be filled because JPG has no transparency.

What is the difference between compressing and resizing?

Compressing lowers the file size by reducing quality. Resizing changes the pixel dimensions. The image resizer can also aim for a target size in KB or MB.

Is my image uploaded to a server?

No. The image is compressed in your browser, on your own device.

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Last updated: November 2026