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ImageDoctor

Image Optimizer

One-pass web optimisation: cap dimensions, pick the best modern format and strip metadata.

Drop images to optimize for the web

Caps dimensions, re-encodes to a modern format and strips metadata in a single pass.

Processed locally in your browser

JPG · PNG · WebP · AVIF · GIF · BMP · TIFF · SVG

What “optimized” means here

  • · Dimensions capped to the largest size your layout actually renders.
  • · Saved as WebP (a smaller modern format) when your browser supports it, otherwise JPEG or PNG.
  • · Hidden details like camera model and location removed, which also trims a few kilobytes.
  • · Transparent backgrounds stay transparent.

Making images fast on the web

Most slow pages ship images far bigger than they are displayed. The optimizer fixes the three usual causes in one pass: it caps the width (1600 px by default, never enlarging smaller images), re-encodes at a sensible quality, and strips hidden metadata.

The Auto format picks WebP where your browser can encode it, which is typically much smaller than JPEG or PNG and keeps transparency. One-click targets cover thumbnails (480 px), in-page images (1200 px), hero banners (1920 px) and retina sources (2560 px).

Add one image to preview the result against the original, or many to optimise them together and download a ZIP. An estimated output size is shown before you start.

Common questions

Around the largest size the image is shown at, doubled for high-density screens. 1200 px suits most in-page images and 1920 px suits full-width heroes; those are the built-in targets.

It addresses the usual ones — oversized images, legacy formats and inefficient encoding. You still need to serve the right size in your HTML, for example with srcset.

Yes. WebP, PNG and AVIF keep transparent areas intact.

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