diff --git a/config/default.js b/config/default.js
index 3932eaf..c657737 100644
--- a/config/default.js
+++ b/config/default.js
@@ -3,13 +3,6 @@
 module.exports = {
   acl: 'private',
   resize: true,
-  crop: false,
-  background: false,
-  embed: false,
-  max: false,
-  min: false,
-  withoutEnlargement: false,
-  ignoreAspectRatio: false,
   extract: false,
   trim: false,
   flatten: false,
@@ -32,5 +25,8 @@ module.exports = {
   toColorspace: false,
   toFormat: false,
   gzip: false,
-  metadata: {}
+  metadata: {},
+  composite: false,
+  ensureAlpha: false,
+  modulate: false
 };
diff --git a/index.d.ts b/index.d.ts
index d167708..dcd3737 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -1,4 +1,18 @@
-import { ResizeOptions, RGBA, Region, ExtendOptions, ThresholdOptions, AvailableFormatInfo, OutputOptions, JpegOptions, PngOptions, Metadata, Kernel } from 'sharp';
+import {
+  ResizeOptions,
+  RGBA,
+  Region,
+  ExtendOptions,
+  ThresholdOptions,
+  AvailableFormatInfo,
+  OutputOptions,
+  JpegOptions,
+  PngOptions,
+  Kernel,
+  OverlayOptions,
+  FlattenOptions,
+  WriteableMetadata
+} from 'sharp';
 import { UploadOptions } from '@google-cloud/storage';
 
 export declare interface Size {
@@ -18,6 +32,12 @@ export declare interface Threshold {
     options?: ThresholdOptions;
 }
 
+export declare interface Modulate {
+  brightness?: number;
+  saturation?: number;
+  hue?: number;
+}
+
 export declare interface Format {
     type: string | AvailableFormatInfo;
     options?: OutputOptions | JpegOptions | PngOptions;
@@ -28,16 +48,10 @@ declare type SharpOption<T = string> = false | T;
 export declare interface SharpOptions {
     size?: Size;
     resize?: boolean;
-    crop?: SharpOption<string | number>;
-    background?: SharpOption<RGBA | string>;
-    embed?: boolean;
-    max?: boolean;
-    min?: boolean;
-    withoutEnlargement?: boolean;
-    ignoreAspectRatio?: boolean;
+    composite?: Array<{ input: string | Buffer } & OverlayOptions>,
     extract?: SharpOption<Region>;
     trim?: SharpOption<number>;
-    flatten?: boolean;
+    flatten?: SharpOption<FlattenOptions>;
     extend?: SharpOption<number | ExtendOptions>;
     negate?: boolean;
     rotate?: SharpOption<boolean | number>;
@@ -50,13 +64,14 @@ export declare interface SharpOptions {
     greyscale?: boolean;
     normalize?: boolean;
     normalise?: boolean;
-    withMetadata?: SharpOption<Metadata>;
+    withMetadata?: SharpOption<WriteableMetadata>;
     convolve?: SharpOption<Kernel>;
     threshold?: SharpOption<number | Threshold>;
     toColourspace?: SharpOption;
     toColorspace?: SharpOption;
     toFormat?: SharpOption<string | Format>;
-    gzip?: boolean;
+    ensureAlpha?: boolean;
+    modulate?: SharpOption<Modulate>;
 }
 
 declare interface Sizes extends Size {
@@ -69,7 +84,8 @@ export declare interface CloudStorageOptions extends UploadOptions {
   keyFilename?: string;
   filename?: string;
   acl?: string;
-  sizes?: Sizes[]
+  sizes?: Sizes[];
+  gzip?: boolean;
 }
 
 export declare type MulterOptions = SharpOptions & CloudStorageOptions;
diff --git a/lib/get-sharp-options.js b/lib/get-sharp-options.js
index f4c5d16..136e10e 100644
--- a/lib/get-sharp-options.js
+++ b/lib/get-sharp-options.js
@@ -2,11 +2,6 @@
 
 module.exports = (options) => ({
   resize: options.resize,
-  background: options.background,
-  crop: options.crop,
-  embed: options.embed,
-  max: options.max,
-  min: options.min,
   toFormat: options.toFormat,
   extract: options.extract,
   trim: options.trim,
@@ -27,7 +22,8 @@ module.exports = (options) => ({
   threshold: options.threshold,
   toColourspace: options.toColourspace,
   toColorspace: options.toColorspace,
-  ignoreAspectRatio: options.ignoreAspectRatio,
   withMetadata: options.withMetadata,
-  withoutEnlargement: options.withoutEnlargement
+  composite: options.composite,
+  ensureAlpha: options.ensureAlpha,
+  modulate: options.modulate
 });
diff --git a/lib/transformer.js b/lib/transformer.js
index bff1ebc..6be4233 100644
--- a/lib/transformer.js
+++ b/lib/transformer.js
@@ -34,8 +34,6 @@ const validateValue = (value) => {
 const resolveImageStream = (key, value, size, imageStream) => {
   if (key === 'resize' && isObject(size)) {
     imageStream = imageStream.resize(size.width, size.height, size.option);
-  } else if (key === 'crop') {
-    imageStream = imageStream[key](value);
   } else if (key === 'toFormat') {
     imageStream = imageStream.toFormat(validateFormat(value), value.options);
   } else {
diff --git a/test/implementation.test.js b/test/implementation.test.js
index 3ccb4ca..34b874b 100644
--- a/test/implementation.test.js
+++ b/test/implementation.test.js
@@ -36,10 +36,10 @@ const storage = multerSharp({
     height: 400,
     option: {
       kernel: 'lanczos2',
-      interpolator: 'nohalo'
+      interpolator: 'nohalo',
+      fit: 'inside'
     }
-  },
-  max: true
+  }
 });
 const upload = multer({ storage });
 const storage2 = multerSharp({
@@ -52,9 +52,11 @@ const storage2 = multerSharp({
   acl: config.uploads.gcsUpload.acl,
   size: {
     width: 400,
-    height: 400
-  },
-  max: true
+    height: 400,
+    option: {
+      fit: 'inside'
+    }
+  }
 });
 const upload2 = multer({ storage: storage2 });
 
@@ -66,9 +68,11 @@ const storage3 = multerSharp({
   destination: config.uploads.gcsUpload.destination,
   size: {
     width: 400,
-    height: 400
+    height: 400,
+    option: {
+      fit: 'inside'
+    }
   },
-  max: true,
   toColourspace: 'srgb'
 });
 const upload3 = multer({ storage: storage3 });
@@ -79,15 +83,19 @@ const storage4 = multerSharp({
   keyFilename: config.uploads.gcsUpload.keyFilename,
   acl: config.uploads.gcsUpload.acl,
   destination: config.uploads.gcsUpload.destination,
-  size: { width: 200 },
-  crop: 16, // crop strategy
-  background: {
-    r: 0, g: 0, b: 100, alpha: 0
+  size: {
+    width: 200,
+    option: {
+      withoutEnlargement: true,
+      background: {
+        r: 0, g: 0, b: 100, alpha: 0
+      }
+    }
   },
-  withoutEnlargement: true,
-  ignoreAspectRatio: true,
   trim: 50,
-  flatten: true,
+  flatten: {
+    background: { r: 0, g: 0, b: 0 }
+  },
   extend: {
     top: 10, bottom: 20, left: 10, right: 10
   },
@@ -116,21 +124,24 @@ const storage5 = multerSharp({
   keyFilename: config.uploads.gcsUpload.keyFilename,
   acl: config.uploads.gcsUpload.acl,
   destination: config.uploads.gcsUpload.destination,
-  size: { width: 400, height: 400 },
-  crop: 'north',
-  background: {
-    r: 0, g: 0, b: 0, alpha: 0
+  size: {
+    width: 400,
+    height: 400,
+    option: {
+      position: 'north',
+      background: {
+        r: 0, g: 0, b: 0, alpha: 0
+      },
+      withoutEnlargement: true
+    }
   },
-  embed: true,
-  max: true,
-  min: true,
-  withoutEnlargement: true,
-  ignoreAspectRatio: true,
   extract: {
     left: 0, top: 2, width: 50, height: 100
   },
   trim: 50,
-  flatten: true,
+  flatten: {
+    background: { r: 0, g: 0, b: 0 }
+  },
   extend: {
     top: 10, bottom: 20, left: 10, right: 10
   },
@@ -164,9 +175,11 @@ const storage6 = multerSharp({
   acl: config.uploads.gcsUpload.acl,
   size: {
     width: 400,
-    height: 400
+    height: 400,
+    option: {
+      fit: 'cover'
+    }
   },
-  max: true,
   extract: {
     left: 0, top: 2, width: 400, height: 400
   }
@@ -219,9 +232,11 @@ const storage12 = multerSharp({
   destination: 'uploadArray',
   size: {
     width: 400,
-    height: 400
-  },
-  max: true
+    height: 400,
+    option: {
+      fit: 'fill'
+    }
+  }
 });
 const upload12 = multer({ storage: storage12 });