How do I compress an image without losing quality?
Lower the compression level gradually and check the preview. Reducing dimensions (width x height) usually has more impact on file size than quality settings alone.
Optimize Images
Reduce image file size by resizing dimensions and adjusting compression quality — everything runs on your device, no upload required.
Frequently asked questions
Which image formats are supported?
JPG and PNG. WEBP output may be available depending on your browser's support.
Can I batch-optimize multiple images at once?
For several files, use the free Batch Compress tool on the web. Use Optimize Images when you need per-image controls inside one PDF.
Is my image uploaded to a server?
No. Compression and resizing happen locally using your browser's built-in capabilities.
Is it safe? Are my files uploaded?
These tools run locally in your browser — for supported local operations your files are not uploaded to a server. Processing the document on your own device avoids sending it to a third party.