Image Compressor
Compress JPG, PNG & WebP images to reduce file size.
Frequently Asked Questions
Can I compress multiple images at once?
Yes. PDFtiny's Image Compressor supports batch mode. Upload multiple JPG, PNG, or WebP files at once and download all compressed results in a single ZIP archive. No size limits on individual files or total batch size.
How do I compress an image to exactly 50KB or 100KB?
Use "Target Size" mode and enter your exact KB requirement. PDFtiny automatically adjusts the compression quality through a binary search algorithm until the output matches your target size as closely as possible.
Does compressing an image permanently damage photo quality?
JPEG compression is lossy by nature, meaning some micro-details are discarded at lower quality levels. However, at 70%–85% quality, the difference is invisible to the human eye. PNG and WebP support lossless compression, so their quality is never degraded.
My compressed image is slightly larger than my target. Why?
Very small images or images that are already heavily compressed may not compress further without severe quality loss. PDFtiny stops when it cannot reduce size further while maintaining minimum visual quality. Try using a PNG-to-JPG conversion for dramatically smaller files.