feat: support specifying image format

src/v1/card.tsx

@@ -218,6 +218,7 @@ export function card(app: App) {
               lang,
               substat: enableSubstat,
               quality: enableRollQuality,
+              format,
             },
           }) => {
             log`Rendering ${uid}/${charId}`;
@@ -290,6 +291,7 @@ export function card(app: App) {
                   enableSubstat,
                   enableRollQuality,
                   debug,
+                  format,
                 }),
               ).toString(36);
               if (feature("API")) {
@@ -870,7 +872,7 @@ export function card(app: App) {
                     { data: await shade.arrayBuffer(), src: "shade" },
                   ],
                   fetchedResources: resources.filter((e) => e.data.byteLength),
-                  format: "webp",
+                  format,
                   drawDebugBorder: debug === "render",
                   stylesheets: [
                     /* css */ `
@@ -965,6 +967,16 @@ export function card(app: App) {
                     description: "Add roll quality under artifact substats.",
                     default: false,
                   }),
+                  format: t.Enum(
+                    {
+                      jpeg: "jpeg",
+                      webp: "webp",
+                      png: "png",
+                    },
+                    {
+                      default: "webp",
+                    },
+                  ),
                 },
                 { additionalProperties: true },
               ),