Compress images online for free
Choose a JPG, PNG, or WebP image, adjust quality, and download a compressed JPEG. Processing happens in your browser.
Image Compressor
Choose an image, select quality, and compress it in this browser. The image is not uploaded to this website.
Choose an image to begin.
Download compressed imageJPG output may not be smaller for every image. PNG transparency is not preserved in JPG output.
What does image compression do?
Quality, file size, and transparency
Image compression can reduce file size by adjusting JPEG quality. Lower quality often creates a smaller file but can reduce visual detail. This tool outputs JPEG, so transparent backgrounds are filled with white. Keep an original copy of important images.
How image compression works
Choose a supported image, adjust the quality setting, and download the compressed result. Lower quality settings generally create smaller files but can introduce visible artifacts. Compare the output with the original at full size before using it on a website or in a project.
Choose the right image format
This tool exports a JPEG image. JPEG is suitable for many photographs, but it does not preserve transparent backgrounds. Transparent areas in the source are filled during conversion, so keep the original PNG if transparency is important.
Balance file size and appearance
For website images, use the smallest file that still looks clear at its displayed dimensions. Resize oversized images before compressing when possible, and keep an untouched original for future edits. Actual file-size savings depend on the source image, its dimensions, and its existing compression.
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