Image Compressor
Free online image compressor for JPEG, PNG, and WebP. Adjust quality, compare file sizes, preview results, and download images or a ZIP.
Compress JPEG, PNG, and WebP images online
Choose the output type and quality, then compare the new image size with the original. JPEG and WebP quality settings trade some image detail for smaller files. PNG uses lossless browser encoding and may become larger; it is not guaranteed to shrink. Transparent pixels are preserved for PNG/WebP. Converting transparency to JPG uses the selected background color.
Frequently asked questions
Will compressing an image always make it smaller?
No. Results depend on the source and format. PNG is re-encoded losslessly and can grow; already-optimized JPEG and WebP files may also get larger. Compare the output size before downloading.
Can I keep transparent pixels?
Yes when the output remains PNG or WebP. JPEG does not support transparency, so choose a background color before converting transparent artwork to JPG.
Does image compression upload my files?
No. This compressor uses your browser to decode and encode the selected image locally.
Which quality should I choose?
Start near 80% for JPEG or WebP, then inspect fine text, edges, and gradients. Use a higher value when visual detail matters more than file size.