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Image Compressor Online Free — PrivaTools

Compress images online for free — reduce JPEG, PNG, and WebP file sizes by up to 80% without visible quality loss. Drag multiple files, see live savings, and download instantly. No upload to external servers.

Image Compressor is one of 105 free file tools on PrivaTools. All processing happens on our servers with zero-knowledge architecture — your files are never stored, never read, and never shared with third parties. No account required.

How to Use Image Compressor

  1. Upload images — Select one or more images (JPG, PNG, WebP). Each file can be up to 500 MB.
  2. Set compression level — Choose a quality target or let the tool auto-optimize. For PNG, lossless compression is applied; for JPG, you can set the quality percentage.
  3. Download compressed images — Click Compress. The tool shows the original and compressed sizes side by side. Multiple files are returned in a ZIP.

Frequently Asked Questions

Is PNG compression lossless?

Yes. PNG compression in PrivaTools is lossless — the image quality is identical to the original, only the file size is reduced through better encoding.

What compression ratio can I expect?

JPG images typically shrink 40-70% at quality 75. PNG images shrink 10-40% depending on content. Screenshots compress better than photographs.

Can I batch-compress multiple images?

Yes. Upload multiple images at once and they are all compressed with the same settings. Download them together in a ZIP file.

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