Image compression reduces the number of bytes needed to store or deliver an image. Smaller files can be easier to upload and download, but aggressive settings can create visible artifacts or blur.
Start with the Display Size
If an image will be displayed at a small size, exporting an extremely large original wastes bytes. Resize a copy to dimensions appropriate for its intended layout, while keeping the original. Enlarging a small source cannot recreate missing detail.
Choose Format and Quality Together
Photographs commonly work well as JPEG or WebP. Transparent graphics may need PNG or WebP. For lossy formats, reduce quality gradually and inspect edges, gradients, text, and faces. File size alone is not a quality score.
Check the Result
Compare the original and exported versions at the size visitors will see. Confirm transparency remains when needed, orientation is correct, and dimensions are appropriate. Keep a source copy so you can export again with different settings.
The Image Resizer adjusts dimensions, and the Image Compressor helps balance quality and file size. Results vary with image content and format.