Understand JPEG quality settings before reducing an image file.
Choose quality for the final use
A smaller JPG is not automatically better. For an email attachment or a website thumbnail, moderate quality may be sufficient. For a product photo with small lettering or a printable document, keep more detail. Test at normal viewing size rather than only judging the preview at 100 percent zoom.
Resize dimensions before export
Image width and height can affect file size more than modest changes to compression quality. A 4000-pixel photo rarely needs to be that large inside a narrow web article. Keep the original, create a smaller copy and use a descriptive filename.
Check edges and text
JPEG compression can introduce fuzzy borders around logos, lettering and strong color transitions. PNG or SVG may be more suitable for flat graphics. If a photo contains private metadata, remove sensitive EXIF fields through a trusted workflow before sharing; a canvas export often strips most original metadata but should not be treated as a guaranteed privacy audit.
Try the tool: Compress JPG Photos Without Making Them Look Blurry.