Bulk Image Compressor

Drastically reduce image file sizes for faster web loading. Upload up to 100 images, adjust the compression ratio, and download the optimized ZIP archive.

Click or drag up to 100 images here

0 files selected
80%
Lower percentage means smaller file size but reduced visual clarity.

Live Preview (First Image)

Upload images to preview
Original: 0 KB  |  Compressed: 0 KB (-0%)

Compression Standards

Web Worker Multi-Threading

The compression algorithm runs in background threads (Web Workers). This prevents your browser UI from freezing when processing heavy 4K image batches, keeping the experience smooth and responsive.

EXIF Data Preservation

Unlike basic Canvas toDataURL() hacks that strip out metadata and rotation flags, this tool utilizes algorithms that correctly interpret EXIF orientation tags so mobile photos don't randomly flip sideways after compression.

Lossy Optimization

By slightly reducing the mathematical precision of the pixel data (Target Quality), you can achieve file size reductions of up to 90% while the visual difference remains imperceptible to the human eye.