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ImageDoctor

Batch Image Tools

Apply resize, compression, conversion and watermarks across dozens of images, then export a ZIP.

Drop a folder's worth of images

Choose your edits once, apply them to every image, and download them all as a ZIP.

Processed locally in your browser

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

How batch processing works

  • · Images are processed in the background, so the page stays responsive.
  • · Only a few images are handled at once, so large batches don’t slow your device down.
  • · Pause, resume or cancel at any time, and retry any image that fails.
  • · All your edits are applied in one go, so quality isn’t lost between steps.

Processing many images at once

Switch on the steps you need — Resize, Adjust, Watermark, Compress and Strip metadata — and put them in order; they run top to bottom on every image. Only compression (WebP, quality 80) is on by default.

Resize by exact size, percentage or a maximum box, with presets for Full HD, 4K, social posts, stories and Open Graph images. Compress by quality, to a target size such as 200 KB, or by a percentage.

Up to 500 images are processed in background workers a few at a time, so the page stays responsive. Pause, resume or cancel the queue, retry any image that fails, then download a ZIP or each file separately. Filenames can use {original}, {index}, {width}, {height}, {format} and {date}.

Common questions

Up to 500 per batch. Very large photos take more memory, so on phones it helps to work in smaller groups.

Yes. Turn on Resize and Compress, choose the “Target size” mode and pick a size such as 100 KB or 500 KB. The quality is found automatically for each image.

You'll see a “Keep originals when smaller” option, so an already-optimised file is never replaced by a larger one.

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