Visual quality
JPEG and WebP processing can be perceptually lossy. Although the automatic settings have been benchmarked, no setting can guarantee identical perceived quality for every possible image.
SVG processing
SVG optimisation preserves vector output but may remove unsafe active content, external references, comments and editor metadata. Review important brand or design assets before replacing a master source.
File-size results
Displayed savings are calculated from the selected original and generated output. No universal percentage reduction is promised.
Compatibility
Modern browser features, WebAssembly support, image dimensions and available device memory can affect processing time and success.
Keep backups
Always retain your source file until you have opened and checked the downloaded output for its intended use.