diff --git a/src/interfaces/index.ts b/src/interfaces/index.ts
index 66a2c2a..72ce39e 100644
--- a/src/interfaces/index.ts
+++ b/src/interfaces/index.ts
@@ -7,4 +7,4 @@ export type MaimaiMetadataKind = (typeof maimaiMetadataKinds)[number];
 
 export const maimaiThumbKinds = ['music', 'frame', 'icon', 'plate'] as const;
 export type MaimaiThumbKind = (typeof maimaiThumbKinds)[number];
-export type ThumbCache = Record<MaimaiThumbKind, Record<number, { thumbhash: string; hash: string }>>;
+export type ThumbCache = Record<MaimaiThumbKind, Record<number, { thumbHash: string; hash: string }>>;
diff --git a/src/interfaces/music.ts b/src/interfaces/music.ts
index 7d5be5a..9045b9d 100644
--- a/src/interfaces/music.ts
+++ b/src/interfaces/music.ts
@@ -50,7 +50,7 @@ export interface MaimaiMusicMetadataRegionalInfo {
 
 export type MaimaiMusicLevelChangeLog = Partial<Record<MaimaiMajorVersionId, number>>[];
 export interface MaimaiMusicMetadata extends MaimaiMusicMetadataBase {
-  jacket?: { thumbhash: string; hash: string };
+  jacket?: { thumbHash: string; hash: string };
   /**
    * The level change log per chart (BASIC, ADVANCED, EXPERT, MASTER, Re:MASTER).
    */
diff --git a/src/interfaces/title.ts b/src/interfaces/title.ts
index 2b41a50..e8a9a9c 100644
--- a/src/interfaces/title.ts
+++ b/src/interfaces/title.ts
@@ -15,6 +15,6 @@ export type BasicMetadata<TExtra = {}> = MetadataMaybeRegionalized<BasicMetadata
 };
 
 export type MaimaiTitleMetadataExtra = { rareType: MaimaiTitleRareType };
-export type MaimaiFrameMetadataExtra = { thumbHash: string };
-export type MaimaiIconMetadataExtra = { thumbHash: string };
-export type MaimaiPlateMetadataExtra = { thumbHash: string };
+export type MaimaiFrameMetadataExtra = { image: { thumbHash: string; hash: string } };
+export type MaimaiIconMetadataExtra = { image: { thumbHash: string; hash: string } };
+export type MaimaiPlateMetadataExtra = { image: { thumbHash: string; hash: string } };
diff --git a/src/metadata/processors/basic.ts b/src/metadata/processors/basic.ts
index 782b1cb..9465366 100644
--- a/src/metadata/processors/basic.ts
+++ b/src/metadata/processors/basic.ts
@@ -34,9 +34,9 @@ const defineDataType = <TExtra = {}>(
       const netOpenDate = parseNetOpenDate(xmlData.netOpenName.str);
       result[id] = { name, netOpenDate, ...parseExtraFields(xmlData) };
       if (thumbKind) {
-        const assetImage = ctx.thumbCache[thumbKind][id];
-        if (!assetImage) logger.warn(`Asset image ${thumbKind} ${id} not found in thumb cache`);
-        (result[id] as { assetImage?: { thumbhash: string; hash: string } }).assetImage = assetImage;
+        const image = ctx.thumbCache[thumbKind][id];
+        if (!image) logger.warn(`Asset image ${thumbKind} ${id} not found in thumb cache`);
+        (result[id] as { image?: { thumbHash: string; hash: string } }).image = image;
       }
     }));
     return result;
diff --git a/src/thumb/worker.ts b/src/thumb/worker.ts
index 213822c..40a85a3 100644
--- a/src/thumb/worker.ts
+++ b/src/thumb/worker.ts
@@ -35,9 +35,9 @@ export default async (args: WorkerArguments) => {
     ctx.drawImage(image, 0, 0, canvas.width, canvas.height);
     const imageData = ctx.getImageData(0, 0, canvas.width, canvas.height);
     const rgba = new Uint8Array(imageData.data.buffer);
-    const thumbhash = rgbaToThumbHash(resizedWidth, resizedHeight, rgba);
+    const thumbHash = rgbaToThumbHash(resizedWidth, resizedHeight, rgba);
     logger.log(`Generated thumbhash for ${filePath}`);
-    result[kind][id] = { thumbhash: Buffer.from(thumbhash).toString('base64url'), hash };
+    result[kind][id] = { thumbHash: Buffer.from(thumbHash).toString('base64url'), hash };
   }));
   await fs.promises.writeFile(args.outputFile, JSON.stringify(result, null, 2));
 };