A QUICK GUIDE
How to use image compressor
Reduce an image’s file size by choosing a lossy output format and adjusting quality. See the actual result before you download it. Your selected image stays in your browser.
- Choose one JPG, PNG or WebP image.
- Select JPG or WebP and adjust the quality. A lower value trades detail for a smaller file.
- Process the image, compare the preview and file size, then download the version that works for you.
A photograph for a website
For a JPG photograph, try 80% quality first. Check fine details such as hair or lettering at full size. If the result is still too large, lower the quality or use Image Resizer to reduce its pixel dimensions.
Good to know
- The output may be larger than the original, especially if the original is already optimized. The size comparison shows increases as well as savings.
- PNG input is supported, but this tool exports JPG or WebP. It does not offer lossless PNG compression. JPG uses a white background for transparent pixels.
- A quality percentage is an encoder setting, not a promise about the resulting file size or visual quality.
Common questions
Can I compress a picture to exactly 100 KB?
This version lets you adjust quality and inspect the actual size. It does not guarantee a particular KB target. Reducing the pixel dimensions with Image Resizer can help when quality changes are not enough.
Does a smaller image always look worse?
Lossy encoding discards some information. At moderate settings the change may be subtle, but edges, text and repeated patterns can show visible artifacts. Compare the preview before choosing your output.
Why is WebP unavailable on my browser?
The tool checks whether your browser can actually export WebP. If it cannot, the option is disabled rather than saving a PNG file with a misleading extension.