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Compress image online

Shrink image file size by re-encoding with a lower quality setting. Supports common raster formats your browser can decode (JPEG, PNG, WebP).

All files remain on your device. Nothing is sent to servers.

Drag an image here or click to browse

Output settings

How it works

  1. Add an image

    Drop any supported image file.

  2. Choose target quality

    Lower quality means smaller files. Preview the result before downloading.

  3. Download

    Get the optimized file without uploading it anywhere.

Benefits

  • Faster sharing and uploads
  • No limits or paywalls
  • Full control over quality vs size

Frequently asked questions

How does online image compression work here?
We decode the image in the browser and encode it again at your chosen quality using the Canvas API.
Is it safe for sensitive photos?
Yes — files are not transmitted to MidiaTools servers because there are no upload endpoints.
Will compression always reduce size?
Usually for photos. Already-optimized PNG or very low-resolution images may not shrink much.