Image Compressor — Free Online Tool
Compress one or many images (up to 10 at once) by adjusting the quality slider. For each image, the tool shows the original size, compressed size, and percentage savings. Compression runs client-side using browser-image-compression — no images are uploaded anywhere.
100% client-side. No uploads. Your data never leaves your browser.
How to use Image Compressor
- Drop up to 10 images into the upload area.
- Adjust the quality slider (higher = better quality, larger file; lower = smaller file, more compression).
- Per-image savings are shown in the file list.
- Click 'Download all' to save all compressed images.
Frequently Asked Questions
What is the maximum number of images I can compress at once?
Up to 10 images in a single batch.
Does compression affect image quality visibly?
At quality 80+ you will typically not see a visible difference. Below 60 you may notice artifacts, especially in photos with gradients.
Which library handles the compression?
browser-image-compression, which runs the compression algorithm in a Web Worker to keep the UI responsive.
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