IllumeAI

Free Online Image Compressor

Reduce JPG, PNG and WebP file size with quality control or target file size.

Shrink images by quality slider or by setting a target maximum file size — perfect for marketplace listings, email attachments, or faster websites. Runs entirely in your browser.

Open the free Image Compressor

100% in-browser · nothing leaves your device

How the compressor works

  1. Step 1

    Drop your images

    Drag in any number of JPG, PNG, or WebP files.

  2. Step 2

    Pick a target

    Drag the quality slider or set a max file size in KB.

  3. Step 3

    Compare and download

    See the size savings before / after, then download the optimized files.

Why use this tool

Quality slider

Fine-grained control from 30% to 100% — preview file size before downloading.

Target file size

Let the tool auto-tune quality to hit a target KB size (great for marketplace upload limits).

Before / after stats

See exactly how many KB you saved on each image and across the batch.

No upload

Compression happens locally — perfect for sensitive product photos.

Frequently asked questions

Will my image quality drop?
JPG compression is lossy by design, but at 70-85% quality most product photos are visually identical to the source while being 60-80% smaller.
Can I hit a specific file size?
Yes — enter a target max in KB and the tool will iterate the quality setting until your image is under that size.
Does it support PNG?
Yes, but PNG is lossless — for big savings convert to JPG or WebP using our free converter.

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