Bulk Image Compression
Compress dozens of images at once. Upload multiple files, compress them all, and download as a ZIP.
Drop images here or click to upload
PNG, JPG, WebP — up to 50MB each
Upload and compress unlimited images at once
Download all compressed images as a ZIP file
Consistent quality settings across all images
See individual and total size savings
Convert formats while bulk compressing
No server uploads — everything stays on your device
Frequently Asked Questions
How many images can I compress at once?
There's no set limit. It depends on your device's memory. Most modern devices can handle 50+ images easily.
Can I set different quality for different images?
Currently, the same quality setting applies to all images in a batch. For different settings, process them in separate batches.
What formats can I bulk compress?
Compresso supports bulk compression of PNG, JPG/JPEG, and WebP images. You can mix formats in the same batch.
Can I download all images as a ZIP?
Yes! After compression, click the 'Download All as ZIP' button to get all compressed images in a single ZIP archive.
Is bulk compression free?
Yes, completely free with no limits on the number of images. No account or sign-up required.
Are my images uploaded to a server?
No. All compression happens locally on your device. Even in bulk mode, your images never leave your browser.