About Image Compressor
An image compressor reduces the file size of a picture. This tool re-encodes the image as lossy JPG or WebP at the quality you set, from 0.1 to 1, and can also scale the longest side down to a pixel limit. The estimated output size updates as you move the slider. Compression is lossy, metadata is removed, and transparent areas become white in JPG output.
Also known as: Compress Image.
How to use Image Compressor
- Choose an image, or drag it onto the upload area. The file is read by your browser and is not uploaded.
- Set "Maximum width or height", "Output format" and "Quality". The preview updates as you change them.
- Check the preview, then press "Download result" to save the file.
Questions about Image Compressor
Which quality setting should I use?
The default of 0.7 usually gives a much smaller file with little visible change in photos. Go lower for thumbnails, or raise it toward 0.9 if you see blocky artifacts around text and sharp edges.
Why did my file get bigger after compressing?
This happens when the source was already heavily compressed, or was a small PNG with few colors. Re-encoding at a high quality setting can exceed the original size. Lower the quality or set a maximum width to shrink it.
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