Image Compressor
Crunch up to 80% smaller — 100% free, 100% private
Drop images here or click to browse (up to 10)
JPEG, PNG, WebP, AVIF up to 50MB each
How It Works
Drop Your Images
Drag and drop up to 10 images at once, paste from clipboard, or click to browse. JPEG, PNG, WebP, AVIF up to 50MB each.
Compare & Adjust
Use the before/after slider to visually compare quality. Drag the quality slider to fine-tune.
Download
Download files individually, or grab all results as a single ZIP. File sizes are shown before you download.
Frequently Asked Questions
How does image compression work?
Krunkit uses mozjpeg for JPEG, oxipng for PNG, and libwebp/libavif for WebP/AVIF. These are the same codecs used by Google, Facebook, and other major platforms. They remove redundant data and apply perceptually optimized compression to reduce file size while keeping the image looking great.
Will compression reduce my image quality?
At the default quality setting of 80, compression is virtually invisible to the human eye. You can drag the quality slider to compare — anything above 75 is typically indistinguishable from the original for photos.
What's the maximum file size I can compress?
Krunkit supports images up to 50MB. Since all processing happens in your browser, very large images may take a few seconds on slower devices.
Can I compress multiple images at once?
Yes! Drop up to 10 images at once, or paste from your clipboard. Each file is processed independently with its own status indicator. When done, download individually or as a single ZIP file.
Does compressing an image change its dimensions?
No. Compression only reduces file size by optimizing how the pixel data is encoded. Your image dimensions remain identical. Use the Resize tool if you need to change dimensions.