GUIDE深度 · Deep dive
Making a Transparent Signature PNG
A transparent signature PNG needs a transparent background, dark ink and enough resolution before placing it in PDF/Word. Check edges on dark/light backgrounds to avoid a white/gray halo; for important files, confirm the recipient accepts an image signature.
Choose transparent background.
Use dark ink and moderate width.
Don't over-compress the PNG.
Scale proportionally, don't stretch.
Check the printed size.
FAQ
Can JPG be transparent?
No; use PNG for transparency.
How large should it be?
Match the signature field, usually 2-4 cm wide.