Why card images get blurry
Many people share a screenshot of their card in WeChat or a group chat, and the text arrives with visible blocks and noise. Chat apps automatically recompress JPEG images above a certain size, and small text is the first thing to suffer.
Two ways to keep your card sharp
High pixel-ratio rendering and PNG export
Shadow Card renders your card on a high pixel-ratio canvas in the browser and exports it as a lossless PNG. Text is drawn directly from the font, so it avoids the artifacts that lossy compression adds.
Share a QR code instead of forwarding images
Put your homepage QR code on the card. The other person scans it and a responsive page opens in their phone browser, including the browser built into WeChat, so they see a sharp card instead of a recompressed image.