Frequently Asked Questions

Are my images uploaded?

No. Everything runs locally in your browser.

Use the comparison toggle and adjust quality upward if artifacts appear.

For broad compatibility; adjustable quality retains detail.

Yes — PNG or WebP outputs keep alpha. JPEG discards transparency.

Soft limit of 50MB per file to avoid memory strain.

Yes after first load using PWA asset caching.

Latest Chrome, Firefox, Safari, and Edge. Older versions may skip HEIC.

Format overhead dominates already optimized small files.

Quality is reduced iteratively until near the threshold; results vary by image complexity.