Choosing a background
- White suits documents, signatures and most form uploads.
- Black or a brand colour can look intentional for logos on dark layouts.
- Pick the colour before converting; JPEG cannot be un-flattened afterwards.
Size and quality
JPEG quality around 85–92% is usually indistinguishable at normal viewing size. Below 60% you will see blocking around text and sharp edges. For a hard KB limit, convert first and then use the compressor with a target.