Bulk Image Compressor

Need to compress multiple images at once? MiniPx handles batch compression entirely in your browser. The free tier processes up to 5 files per batch, which covers most everyday tasks like cleaning up a blog post's screenshots or compressing a small photo set. Pro lifts the cap, so you can drag a folder of 50 or 200 images and let MiniPx work through them all in one shot.

Unlike cloud-based bulk compressors (TinyPNG limits free users to 20 images per batch and 500 per month, iLoveIMG limits to 15 at a time), MiniPx Pro has zero per-batch and per-month limits because all processing happens on your device. Your CPU does the work, not a remote server. Your images stay completely private — nothing is ever uploaded, on free or Pro.

The bulk workflow is optimized for speed: images are compressed sequentially with a progress indicator showing how many are complete. After processing, you get individual Save buttons for each file plus a Download ZIP button to grab everything at once. Each file shows the original size, compressed size, and percentage savings.

Common use cases for bulk compression: optimizing all images on a website for faster page loads, compressing a folder of product photos for an e-commerce store, reducing the size of a photo album before emailing or uploading to cloud storage, and preparing multiple document scans for form submissions. The 5-file free tier handles the first three for most casual users; Pro is for designers, e-commerce sellers, and developers who batch dozens to hundreds at a time.

For web developers, bulk compression with WebP output and the Smart preset typically reduces total image payload by 60-75% — a significant improvement for Core Web Vitals and page speed scores that directly impact Google search rankings. Pro's responsive image sets feature also generates 4 sizes per source image in one pass, ready to drop into a <picture> element.