Image optimization
Compress images online.
Reduce image file size by adjusting output quality. Your image is processed in this browser and is not uploaded.
Image compression workspace
Original image
Lower quality usually creates a smaller file. JPG fills transparent areas with white; WEBP can retain transparency.
Compressed image
Compress an image to reduce its file size
Choose a supported image, select WEBP or JPG output, and set the quality level to balance visual detail and file size. The tool reports the original and output sizes and previews the converted image before download. Processing takes place locally in your browser.
Choose a quality level that fits your image
Higher quality keeps more visual detail, while lower quality often reduces file size further. The actual change depends on the image and output format; a converted file can sometimes be larger than its source.
Frequently asked questions
Which image formats can I use?
The compressor accepts JPG, PNG, WEBP, GIF, BMP and AVIF images that your browser can decode. Output is WEBP or JPG.
Are my images uploaded?
No. The image is decoded, compressed and previewed in your browser. It is not sent to this website.
Why can the compressed file be larger?
Output size depends on the input image and selected format. If the source is already highly optimized, a different encoding may increase its size; the result reports the actual difference.