Happy SVG: data:image/svg+xml;base64,PHN2ZyB2aWV3Qm94PSIwIDAgMjAwIDIwMCIgd2lkdGg9IjQwMCIgaGVpZ2h0PSI0MDAiIHhtbG5z PSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyI+CiAgICA8Y2lyY2xlIGN4PSIxMDAiIGN5PSIx MDAiIGZpbGw9InllbGxvdyIgcj0iNzgiIHN0cm9rZT0iYmxhY2siIHN0cm9rZS13aWR0aD0iMyIg Lz4KICAgIDxnIGNsYXNzPSJleWVzIj4KICAgICAgICA8Y2lyY2xlIGN4PSI3MCIgY3k9IjgyIiBy PSIxMiIgLz4KICAgICAgICA8Y2lyY2xlIGN4PSIxMjciIGN5PSI4MiIgcj0iMTIiIC8+CiAgICA8 L2c+CiAgICA8cGF0aCBkPSJtMTM2LjgxIDExNi41M2MuNjkgMjYuMTctNjQuMTEgNDItODEuNTIt LjczIiBzdHlsZT0iZmlsbDpub25lOyBzdHJva2U6IGJsYWNrOyBzdHJva2Utd2lkdGg6IDM7IiAv Pgo8L3N2Zz4=
Sad SVG: data:image/svg+xml;base64,PHN2ZyB3aWR0aD0iMTAyNHB4IiBoZWlnaHQ9IjEwMjRweCIgdmlld0JveD0iMCAwIDEwMjQgMTAy NCIgeG1sbnM9Imh0dHA6Ly93d3cudzMub3JnLzIwMDAvc3ZnIj4KICAgIDxwYXRoIGZpbGw9IiMz MzMiCiAgICAgICAgZD0iTTUxMiA2NEMyNjQuNiA2NCA2NCAyNjQuNiA2NCA1MTJzMjAwLjYgNDQ4 IDQ0OCA0NDggNDQ4LTIwMC42IDQ0OC00NDhTNzU5LjQgNjQgNTEyIDY0em0wIDgyMGMtMjA1LjQg MC0zNzItMTY2LjYtMzcyLTM3MnMxNjYuNi0zNzIgMzcyLTM3MiAzNzIgMTY2LjYgMzcyIDM3Mi0x NjYuNiAzNzItMzcyIDM3MnoiIC8+CiAgICA8cGF0aCBmaWxsPSIjRTZFNkU2IgogICAgICAgIGQ9 Ik01MTIgMTQwYy0yMDUuNCAwLTM3MiAxNjYuNi0zNzIgMzcyczE2Ni42IDM3MiAzNzIgMzcyIDM3 Mi0xNjYuNiAzNzItMzcyLTE2Ni42LTM3Mi0zNzItMzcyek0yODggNDIxYTQ4LjAxIDQ4LjAxIDAg MCAxIDk2IDAgNDguMDEgNDguMDEgMCAwIDEtOTYgMHptMzc2IDI3MmgtNDguMWMtNC4yIDAtNy44 LTMuMi04LjEtNy40QzYwNCA2MzYuMSA1NjIuNSA1OTcgNTEyIDU5N3MtOTIuMSAzOS4xLTk1Ljgg ODguNmMtLjMgNC4yLTMuOSA3LjQtOC4xIDcuNEgzNjBhOCA4IDAgMCAxLTgtOC40YzQuNC04NC4z IDc0LjUtMTUxLjYgMTYwLTE1MS42czE1NS42IDY3LjMgMTYwIDE1MS42YTggOCAwIDAgMS04IDgu NHptMjQtMjI0YTQ4LjAxIDQ4LjAxIDAgMCAxIDAtOTYgNDguMDEgNDguMDEgMCAwIDEgMCA5Nnoi IC8+CiAgICA8cGF0aCBmaWxsPSIjMzMzIgogICAgICAgIGQ9Ik0yODggNDIxYTQ4IDQ4IDAgMSAw IDk2IDAgNDggNDggMCAxIDAtOTYgMHptMjI0IDExMmMtODUuNSAwLTE1NS42IDY3LjMtMTYwIDE1 MS42YTggOCAwIDAgMCA4IDguNGg0OC4xYzQuMiAwIDcuOC0zLjIgOC4xLTcuNCAzLjctNDkuNSA0 NS4zLTg4LjYgOTUuOC04OC42czkyIDM5LjEgOTUuOCA4OC42Yy4zIDQuMiAzLjkgNy40IDguMSA3 LjRINjY0YTggOCAwIDAgMCA4LTguNEM2NjcuNiA2MDAuMyA1OTcuNSA1MzMgNTEyIDUzM3ptMTI4 LTExMmE0OCA0OCAwIDEgMCA5NiAwIDQ4IDQ4IDAgMSAwLTk2IDB6IiAvPgo8L3N2Zz4=
Example SVG: data:image/svg+xml;base64, PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSI1MDAiIGhlaWdodD0iNTAwIj48dGV4dCB4PSIwIiB5PSIxNSIgZmlsbD0iYmxhY2siPiBoaSEgWW91ciBicm93c2VycyBkZWNvZGVkIHRoaXMhIDwvdGV4dD48L3N2Zz4=