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Compress image

Reduce the weight of your images while maintaining a configurable quality.

Reviewed practical guide

How to compress an image without degrading it unnecessarily

Adjust quality against a measurable target and inspect detail, colour and transparency before publishing the result.

Compress image re-encodes the file at the selected quality. It keeps a common source format—JPG, PNG, WebP or AVIF—and applies settings appropriate to that codec. PNG reduction may use a palette, so photographs and gradients deserve particular inspection.

Perceived quality depends more on the subject than on a single number. Photographs can tolerate loss that becomes obvious in small text, icons, screenshots and high-contrast edges. The useful target is the smallest file that remains correct for its destination.

What result to expect

You will receive a re-encoded image whose filename includes “compress-image”; the source remains separate.

When this is useful

  • Reduce photographs before uploading them to a web page.
  • Meet file-size limits in forms or publishing platforms.
  • Make a lightweight email copy without changing the master image.

Checks before sharing

  • Resize first when the image has far more pixels than will ever be displayed.
  • Evaluate both at 100% zoom and at the final presentation size.
  • Retain a lossless or original master for future editing.

Limitations to understand

  • Repeated lossy recompression accumulates visible artefacts.
  • Palette-based PNG output can change gradients or colours even when it saves substantial space.
  • Re-encoding may remove embedded metadata, so it is not a master copy when that information must be retained.

Frequently asked questions

Which quality is guaranteed to look unchanged?

There is no universal value. It depends on format, subject and display size, so compare a representative output.

Does compression change image dimensions?

This operation focuses on encoding and is not intended to alter width or height. Use Resize image when you need fewer pixels.

Why can PNG size change so much?

Flat-colour areas can be represented with a small palette. With photos and gradients, inspect the result for banding or colour changes.

Editorial review: MyWorkingArea team

Checked against the options and output of the current tool.

Content reviewed on 29 July 2026.

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