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Image Studio

Smart web image compression (AVIF, WebP, JPEG, PNG)

Finds, for each image, the smallest format and quality that still looks the same, and shows the comparison.

  1. 1Add your image files
  2. 2Pick options
  3. 3Click Run
  4. 4Download result

Limits

  • Similarity is measured with SSIM on a grayscale copy shrunk to at most 512 px. It is a proxy for how a picture looks, not a guarantee: colour shifts and fine detail can be missed, so check important images by eye.
  • AVIF is offered only when your browser can create AVIF files itself. Many browsers cannot, and then AVIF is skipped and the result says so. No encoder is downloaded.
  • WebP availability also depends on the browser. PNG is lossless, so it only wins on flat-colour graphics.
  • Metadata (EXIF, GPS, colour profiles) is always removed from re-encoded files. If the original is kept because it is already the smallest, it is returned unchanged, metadata included.
  • Animated GIFs keep only their first frame. HEIC/HEIF photos are not readable by most browsers.
  • The "smallest file" assumes similarity falls steadily as quality falls, which holds for normal photos; unusual images may land slightly above the smallest possible size.
  • Everything runs on your device; images are never uploaded.

Ask the AI chat

The AI chat can run this tool for you. Try:

  • “make these images smaller for my website”
  • “optimize my photos for the web without losing quality”
  • “compress these pictures to AVIF or WebP if it still looks the same”

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