How to Compress Image Without Losing Quality
The best way to compress an image without visible quality loss is to resize oversized pixels first, then apply moderate compression.
Start With Image Dimensions
Most oversized files come from dimensions that are much larger than the final use. Resize the image before lowering quality so the result stays cleaner.
For websites, a maximum width around 1600 to 2000 pixels is enough for most content images.
Balance Quality And File Size
A quality setting around 70 percent is a strong starting point for JPG photos. Increase it when you see artifacts, and lower it when file size matters more.
Always compare the preview and file size after compression instead of guessing from the slider alone.
Use The Compressed Version Online
Download the compressed file and use it for your website, upload form, email attachment or CMS. Keep the original separately if the image is important.
If the image contains small text, product edges or screenshots, review it at full size before publishing.