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Bulk Image Compressor

Compress many pictures at once and download them as a ZIP.

Free · No signup · Files stay on your device

or drop files here

How to use Bulk Image Compressor

  1. 1Click the Select button and choose your files, or drag and drop.
  2. 2Fill in the options shown on the page.
  3. 3Press the Bulk Image Compressor button.
  4. 4Download your result.

Your files stay private

Your file is processed on your own device. It is never uploaded to our servers.

Frequently asked questions

Is Bulk Image Compressor free?

Yes. ToolBox is 100% free. No signup, no watermark, no daily limit.

Are my files uploaded to a server?

No. All work happens inside your browser on your own device. Your files never leave your phone or computer.

Does it work on mobile?

Yes, on Android, iPhone, tablets and desktop. Very large files can be slow on older phones.

What are the limits of Bulk Image Compressor?

PNG pictures stay PNG when you keep the original format, which may not get smaller. Choose WebP or JPG for the smallest files. JPG does not support transparency.

More Compression & Info tools

Image Compressor

Make pictures smaller so they upload and load faster.

Image Compressor to KB

Shrink a picture to a size you choose, such as 100 KB.

Image File Size Checker

See the exact file size of one or more pictures.

Image Dimension Checker

Find the width, height, ratio and megapixels of pictures.

Image DPI / Resolution Info

Check the DPI stored in a picture and its print size.