diff --git a/.size-limit b/.size-limit
index 094df47..4dcbf07 100644
--- a/.size-limit
+++ b/.size-limit
@@ -1,7 +1,7 @@
 [
 	{
 		"path": "lib/index.js",
-		"limit": "3 KB",
+		"limit": "3.1 KB",
 		"webpack": false
 	},
 	{
diff --git a/CHANGELOG.md b/CHANGELOG.md
index c0ba23f..7993366 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -24,6 +24,13 @@ DO NOT TOUCH. SAVE IT ON TOP.
 
 -->
 
+## [3.0.0] - 2020-06-23
+### Breaking
+- Naming change: srcset -> srcSet, Srcset -> SrcSet
+
+### Added
+- `originMultiplier` image metadata
+
 ## [2.0.0] - 2020-05-26
 ### Breaking
 - Requires `Node 10+`
diff --git a/README.md b/README.md
index c32ec29..9de5204 100644
--- a/README.md
+++ b/README.md
@@ -59,7 +59,7 @@ yarn exec -- srcset [...sources] [...options]
 
 | Option | Description | Default |
 |--------|-------------|---------|
-| sources | Source image(s) glob patterns. | |
+| sources | Source image(s) glob patterns. | required |
 | ‑‑help, -h | Print this message. | |
 | ‑‑verbose, -v | Print additional info about progress. | |
 | ‑‑match, -m | Glob patern(s) or media query(ies) to match image(s) by name or size. | all images |
@@ -67,7 +67,7 @@ yarn exec -- srcset [...sources] [...options]
 | ‑‑format, -f | Output image(s) formats to convert. | no convert |
 | ‑‑skipOptimization | Do not optimize output images. | `false` |
 | ‑‑noScalingUp | Do not generate images with higher resolution than they's sources are. | `false`
-| ‑‑dest, -d | Destination directory. | |
+| ‑‑dest, -d | Destination directory. | required |
 
 #### Example
 
@@ -75,96 +75,64 @@ yarn exec -- srcset [...sources] [...options]
 srcset "src/images/*.jpg" --match "(min-width: 1920px)" --width 1920,1280,1024,860,540,320 --format jpg,webp -d static/images
 ```
 
-#### Configuration
+### Configuration
 
-Configuration file is optional. If needed, can be defined through `.srcsetrc` (JSON file) or `.srcsetrc.js` in the root directory of the project.
+#### Common options
 
-Supported options:
-
-```ts
-interface ICommonConfig {
-    /**
-     * Object with Sharp configs for each supported format.
-     */
-    processing?: Partial<IProcessingConfig>;
-    /**
-     * Object with imagemin plugins for each format.
-     */
-    optimization?: Partial<IOptimizationConfig>;
-    /**
-     * Do not optimize output images.
-     */
-    skipOptimization?: boolean;
-    /**
-     * Generate images with higher resolution than they's sources are.
-     */
-    scalingUp?: boolean;
-    /**
-     * Postfix string or function to generate postfix for image.
-     */
-    postfix?: Postfix;
-}
+| Option | Type | Description | Default |
+|--------|------|-------------|---------|
+| processing | Partial\<[IProcessingConfig]\> | Object with Sharp configs for each supported format. | see [defaults.ts](src/defaults.ts) |
+| optimization | Partial\<[IOptimizationConfig]\> | Object with imagemin plugins for each format. | see [defaults.ts](src/defaults.ts) |
+| skipOptimization | boolean | Do not optimize output images. | `false` |
+| scalingUp | boolean | Generate images with higher resolution than they's sources are. | `true` |
+| postfix | [Postfix] | Output image(s) widths to resize, value less than or equal to 1 will be detected as multiplier. | see [defaults.ts](src/defaults.ts) |
 
-interface IRule extends ICommonConfig {
-    /**
-     * There is support of 3 types of matchers:
-     * 1. Glob pattern of file path;
-     * 2. Media query to match image by size;
-     * 3. `(path: string, size: ISize, source: Vinyl) => boolean` function.
-     */
-    match?: Matcher;
-    /**
-     * Output image(s) formats to convert.
-     */
-    format?: SupportedExtension|SupportedExtension[];
-    /**
-     * Output image(s) widths to resize, value less than or equal to 1 will be detected as multiplier.
-     */
-    width?: number|number[];
-}
+#### Rule options
 
-/**
- * RC file:
- */
-interface IConfig extends ICommonConfig {
-    /**
-     * Source image(s) glob patterns.
-     */
-    src?: string|string[];
-    /**
-     * Rules.
-     */
-    rules?: IRule[];
-    /**
-     * Print additional info about progress.
-     */
-    verbose?: boolean;
-    /**
-     * Destination directory.
-     */
-    dest?: string;
-}
-```
+Extends [common options](#common-options).
+
+| Option | Type | Description | Default |
+|--------|------|-------------|---------|
+| match | [Matcher] | There is support of 3 types of matchers:<br>1. Glob pattern of file path;<br>2. Media query to match image by size;<br>3. `(path: string, size: ISize, source: Vinyl) => boolean` function. | all images |
+| format | [SupportedExtension]\|[SupportedExtension]\[\] | Output image(s) formats to convert. | no convert |
+| width | number\|number[] | Output image(s) widths to resize, value less than or equal to 1 will be detected as multiplier. | `[1]` |
+
+#### Configuration file
+
+Configuration file is optional. If needed, can be defined through `.srcsetrc` (JSON file) or `.srcsetrc.js` in the root directory of the project.
 
-- [`IProcessingConfig`](https://trigensoftware.github.io/flexis-srcset/interfaces/_types_.iprocessingconfig.html)
-- [`IOptimizationConfig`](https://trigensoftware.github.io/flexis-srcset/interfaces/_types_.ioptimizationconfig.html)
-- [`Postfix`](https://trigensoftware.github.io/flexis-srcset/modules/_types_.html#postfix)
-- [`Matcher`](https://trigensoftware.github.io/flexis-srcset/modules/_helpers_.html#matcher)
-- [`SupportedExtension`](https://trigensoftware.github.io/flexis-srcset/modules/_extensions_.html#supportedextension)
+Supported options, extends [common options](#common-options):
+
+| Option | Type | Description | Default |
+|--------|------|-------------|---------|
+| src | string\|string[] | Source image(s) glob patterns. | required |
+| rules | [IRule](#rule-options)\[\] | Rules. | `[]` |
+| verbose | boolean | Print additional info about progress. | `false` |
+| dest | string | Destination directory. | required |
+
+[IProcessingConfig]: https://trigensoftware.github.io/flexis-srcset/interfaces/_types_.iprocessingconfig.html
+[IOptimizationConfig]: https://trigensoftware.github.io/flexis-srcset/interfaces/_types_.ioptimizationconfig.html
+[Postfix]: https://trigensoftware.github.io/flexis-srcset/modules/_types_.html#postfix
+[Matcher]: https://trigensoftware.github.io/flexis-srcset/modules/_helpers_.html#matcher
+[SupportedExtension]: https://trigensoftware.github.io/flexis-srcset/modules/_extensions_.html#supportedextension
 
 ### Gulp
 
 You can use `@flexis/srcset` with [Gulp](https://github.com/gulpjs/gulp):
 
 ```js
-import srcset from '@flexis/srcset/lib/stream';
+import srcSet from '@flexis/srcset/lib/stream';
 
 gulp.task('images', () =>
     gulp.src('src/*.{jpg,png}')
-        .pipe(srcset([{
+        .pipe(srcSet([{
             match:  '(min-width: 3000px)',
             width:  [1920, 1280, 1024, 860, 540, 320],
             format: ['jpg', 'webp']
+        }, {
+            match:  '(max-width: 3000px)',
+            width:  [1, .5],
+            format: ['jpg', 'webp']
         }], {
             skipOptimization: true
         }))
@@ -176,78 +144,22 @@ gulp.task('images', () =>
 
 Plugin options:
 
-```ts
-interface ICommonConfig {
-    /**
-     * Object with Sharp configs for each supported format.
-     */
-    processing?: Partial<IProcessingConfig>;
-    /**
-     * Object with imagemin plugins for each format.
-     */
-    optimization?: Partial<IOptimizationConfig>;
-    /**
-     * Do not optimize output images.
-     */
-    skipOptimization?: boolean;
-    /**
-     * Generate images with higher resolution than they's sources are.
-     */
-    scalingUp?: boolean;
-    /**
-     * Postfix string or function to generate postfix for image.
-     */
-    postfix?: Postfix;
-}
-
-/**
- * First argument: IPluginRule[]
- */
-interface IPluginRule extends ICommonConfig {
-    /**
-     * There is support of 3 types of matchers:
-     * 1. Glob pattern of file path;
-     * 2. Media query to match image by size;
-     * 3. `(path: string, size: ISize, source: Vinyl) => boolean` function.
-     */
-    match?: Matcher;
-    /**
-     * Output image(s) formats to convert.
-     */
-    format?: SupportedExtension|SupportedExtension[];
-    /**
-     * Output image(s) widths to resize, value less than or equal to 1 will be detected as multiplier.
-     */
-    width?: number|number[];
-}
-
-/**
- * Second argument: 
- */
-interface IPluginConfig extends ICommonConfig {
-    /**
-     * Print additional info about progress.
-     */
-    verbose?: boolean;
-}
-```
+First argument is [IRule](#rule-options)\[\], second argument extends [common options](#common-options):
 
-- [`IProcessingConfig`](https://trigensoftware.github.io/flexis-srcset/interfaces/_types_.iprocessingconfig.html)
-- [`IOptimizationConfig`](https://trigensoftware.github.io/flexis-srcset/interfaces/_types_.ioptimizationconfig.html)
-- [`Postfix`](https://trigensoftware.github.io/flexis-srcset/modules/_types_.html#postfix)
-- [`Matcher`](https://trigensoftware.github.io/flexis-srcset/modules/_helpers_.html#matcher)
-- [`SupportedExtension`](https://trigensoftware.github.io/flexis-srcset/modules/_extensions_.html#supportedextension)
+| Option | Type | Description | Default |
+|--------|------|-------------|---------|
+| verbose | boolean | Print additional info about progress. | `false` |
 
 ### JS API
 
 Module exposes next API:
 
 ```js
-export default SrcsetGenerator;
+export default SrcSetGenerator;
 export {
     IProcessingConfig,
     IOptimizationConfig,
-    ISrsetVinyl,
+    ISrcSetVinyl,
     ISize,
     IMatcherFunction,
     SupportedExtension,
@@ -269,7 +181,7 @@ export {
 import {
     promises as fs
 } from 'fs';
-import SrcsetGenerator from '@flexis/favicons';
+import SrcSetGenerator from '@flexis/favicons';
 import Vinyl from 'vinyl';
 
 async function generate() {
@@ -280,8 +192,8 @@ async function generate() {
         path,
         contents
     });
-    const srcset = new SrcsetGenerator();
-    const images = srcset.generate(source, {
+    const srcSet = new SrcSetGenerator();
+    const images = srcSet.generate(source, {
         width:  [1920, 1280, 1024, 860, 540, 320],
         format: ['jpg', 'webp']
     });
diff --git a/package.json b/package.json
index ee717ee..9d26c63 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@flexis/srcset",
-  "version": "2.0.0",
+  "version": "3.0.0",
   "description": "Highly customizable tool for generating responsive images.",
   "author": "dangreen",
   "license": "MIT",
diff --git a/src/ISrcsetVinyl.ts b/src/ISrcsetVinyl.ts
deleted file mode 100644
index 0d819c7..0000000
--- a/src/ISrcsetVinyl.ts
+++ /dev/null
@@ -1,11 +0,0 @@
-import Vinyl from 'vinyl';
-import {
-	Metadata
-} from 'sharp';
-
-export default interface ISrsetVinyl extends Vinyl {
-	metadata?: Metadata & {
-		originMultiplier?: number;
-	};
-	postfix?: string;
-}
diff --git a/src/helpers.ts b/src/helpers.ts
index c86542b..76cefe5 100644
--- a/src/helpers.ts
+++ b/src/helpers.ts
@@ -2,7 +2,9 @@ import Vinyl from 'vinyl';
 import minimatch from 'minimatch';
 import mediaQuery from 'css-mediaquery';
 import Sharp from 'sharp';
-import ISrsetVinyl from './ISrcsetVinyl';
+import {
+	ISrcSetVinyl
+} from './types';
 import {
 	isSupportedType
 } from './extensions';
@@ -41,7 +43,7 @@ export function isVinylBuffer(source: Vinyl) {
  * @param  force - Force refetch metadata.
  * @return Source image file with attached metadata.
  */
-export async function attachMetadata(source: Vinyl, force = false): Promise<ISrsetVinyl> {
+export async function attachMetadata(source: Vinyl, force = false): Promise<ISrcSetVinyl> {
 
 	if (!force && typeof source.metadata === 'object') {
 		return source;
@@ -53,6 +55,7 @@ export async function attachMetadata(source: Vinyl, force = false): Promise<ISrs
 
 		source.metadata = await Sharp(source.contents as Buffer).metadata();
 		source.metadata.originMultiplier = originMultiplier;
+
 	} catch (err) {
 		return source;
 	}
@@ -74,7 +77,7 @@ export async function attachMetadata(source: Vinyl, force = false): Promise<ISrs
  * @param  matcherOrMatchers - Rules to match image file.
  * @return Image is matched or not.
  */
-export async function matchImage(source: ISrsetVinyl, matcherOrMatchers: Matcher|Matcher[] = null) {
+export async function matchImage(source: ISrcSetVinyl, matcherOrMatchers: Matcher|Matcher[] = null) {
 
 	if (!isVinylBuffer(source)) {
 		throw new Error('Invalid source.');
diff --git a/src/index.ts b/src/index.ts
index 2947f95..ee7ebd8 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -1,7 +1,6 @@
 import Vinyl from 'vinyl';
 import Sharp from 'sharp';
 import Imagemin from 'imagemin';
-import ISrsetVinyl from './ISrcsetVinyl';
 import {
 	processing as defaultProcessing,
 	optimization as defaultOptimization,
@@ -17,6 +16,7 @@ import {
 	attachMetadata
 } from './helpers';
 import {
+	ISrcSetVinyl,
 	IProcessingConfig,
 	IOptimizationConfig,
 	Postfix,
@@ -27,11 +27,8 @@ import {
 export * from './extensions';
 export * from './helpers';
 export * from './types';
-export {
-	ISrsetVinyl
-};
 
-export default class SrcsetGenerator {
+export default class SrcSetGenerator {
 
 	private readonly processing: IProcessingConfig = defaultProcessing;
 	private readonly optimization: IOptimizationConfig = defaultOptimization;
@@ -74,7 +71,7 @@ export default class SrcsetGenerator {
 	 * @param  generateConfig - Image handle config.
 	 * @return Results of handling.
 	 */
-	async *generate(source: ISrsetVinyl, generateConfig: IGenerateConfig = {}) {
+	async *generate(source: ISrcSetVinyl, generateConfig: IGenerateConfig = {}) {
 
 		if (!isVinylBuffer(source)) {
 			throw new Error('Invalid source.');
@@ -138,7 +135,7 @@ export default class SrcsetGenerator {
 					continue;
 				}
 
-				const optimizedImage: ISrsetVinyl = await this.optimizeImage(source, config);
+				const optimizedImage: ISrcSetVinyl = await this.optimizeImage(source, config);
 
 				await attachMetadata(optimizedImage, true);
 
@@ -178,7 +175,7 @@ export default class SrcsetGenerator {
 	 * @return Destination image file.
 	 */
 	private async processImage(
-		source: ISrsetVinyl,
+		source: ISrcSetVinyl,
 		outputType: string,
 		width: number = null,
 		config: IConfig = {}
@@ -196,6 +193,10 @@ export default class SrcsetGenerator {
 
 		target.extname = `.${outputType}`;
 
+		if (target.metadata) {
+			Reflect.deleteProperty(target.metadata, 'originMultiplier');
+		}
+
 		if (width !== null) {
 
 			const isMultiplier = width <= 1;
@@ -267,7 +268,7 @@ export default class SrcsetGenerator {
 	 * @param customPostfix - Custom postfix generator.
 	 */
 	private addPostfix(
-		target: ISrsetVinyl,
+		target: ISrcSetVinyl,
 		calculatedWidth: number,
 		width: number,
 		customPostfix: Postfix = null
diff --git a/src/stream.ts b/src/stream.ts
index 56053a0..e7a0c42 100644
--- a/src/stream.ts
+++ b/src/stream.ts
@@ -4,7 +4,7 @@ import {
 import Vinyl from 'vinyl';
 import through from 'through2-concurrent';
 import chalk from 'chalk';
-import SrcsetGenerator, {
+import SrcSetGenerator, {
 	IConfig,
 	IGenerateConfig,
 	Matcher,
@@ -62,7 +62,7 @@ export default function plugin(rules: IRule[] = [{}], {
 		scalingUp:        true,
 		...inputOptions
 	};
-	const srcset = new SrcsetGenerator(options);
+	const srcSet = new SrcSetGenerator(options);
 
 	async function each(file, _, next) {
 
@@ -94,7 +94,7 @@ export default function plugin(rules: IRule[] = [{}], {
 							'\n'
 						);
 
-						const images = srcset.generate(vinylFile, rule);
+						const images = srcSet.generate(vinylFile, rule);
 
 						for await (const image of images) {
 							this.push(image);
diff --git a/src/types.ts b/src/types.ts
index 52fa179..29a2792 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -1,7 +1,18 @@
+import Vinyl from 'vinyl';
+import {
+	Metadata
+} from 'sharp';
 import {
 	SupportedExtension
 } from './extensions';
 
+export interface ISrcSetVinyl extends Vinyl {
+	metadata?: Metadata & {
+		originMultiplier?: number;
+	};
+	postfix?: string;
+}
+
 /**
  * Object with [Sharp configs](http://sharp.readthedocs.io/en/stable/api-output/) for each supported format.
  *
diff --git a/test/SrcsetGenerator.spec.ts b/test/SrcsetGenerator.spec.ts
index 9908aad..924b644 100644
--- a/test/SrcsetGenerator.spec.ts
+++ b/test/SrcsetGenerator.spec.ts
@@ -1,8 +1,11 @@
 import Vinyl from 'vinyl';
 import mozJpegPlugin from 'imagemin-mozjpeg';
-import ISrsetVinyl from '../src/ISrcsetVinyl';
-import SrcsetGenerator from '../src';
-import image, { expectedSize } from './image';
+import SrcSetGenerator, {
+	ISrcSetVinyl
+} from '../src';
+import image, {
+	expectedSize
+} from './image';
 
 const optimization = {
 	jpg: mozJpegPlugin({
@@ -12,7 +15,7 @@ const optimization = {
 
 async function vinylsFromAsyncIterator(iterator: AsyncIterableIterator<Vinyl>) {
 
-	const vinyls: ISrsetVinyl[] = [];
+	const vinyls: ISrcSetVinyl[] = [];
 
 	for await (const vinyl of iterator) {
 		vinyls.push(vinyl);
@@ -21,45 +24,45 @@ async function vinylsFromAsyncIterator(iterator: AsyncIterableIterator<Vinyl>) {
 	return vinyls;
 }
 
-describe('SrcsetGenerator', () => {
+describe('SrcSetGenerator', () => {
 
 	jest.setTimeout(30000);
 
 	it('should create correct instance', () => {
 
-		const srcset = new SrcsetGenerator();
+		const srcSet = new SrcSetGenerator();
 
-		expect(typeof srcset.generate).toBe('function');
+		expect(typeof srcSet.generate).toBe('function');
 	});
 
 	it('should skip optimization', async () => {
 
-		const srcset = new SrcsetGenerator({
+		const srcSet = new SrcSetGenerator({
 			skipOptimization: true,
 			optimization
 		});
-		const [notOptimizedImage] = await vinylsFromAsyncIterator(srcset.generate(image));
+		const [notOptimizedImage] = await vinylsFromAsyncIterator(srcSet.generate(image));
 
 		expect((notOptimizedImage.contents as Buffer).length).toBe(image.contents.length);
 	});
 
 	it('should optimize', async () => {
 
-		const srcset = new SrcsetGenerator({
+		const srcSet = new SrcSetGenerator({
 			optimization
 		});
-		const [optimizedImage] = await vinylsFromAsyncIterator(srcset.generate(image));
+		const [optimizedImage] = await vinylsFromAsyncIterator(srcSet.generate(image));
 
 		expect((optimizedImage.contents as Buffer).length).toBeLessThan(image.contents.length);
 	});
 
 	it('should skip scaling up', async () => {
 
-		const srcset = new SrcsetGenerator({
+		const srcSet = new SrcSetGenerator({
 			skipOptimization: true,
 			scalingUp: false
 		});
-		const images = await vinylsFromAsyncIterator(srcset.generate(image, {
+		const images = await vinylsFromAsyncIterator(srcSet.generate(image, {
 			width: [1, 5000]
 		}));
 
@@ -68,10 +71,10 @@ describe('SrcsetGenerator', () => {
 
 	it('should scaling up', async () => {
 
-		const srcset = new SrcsetGenerator({
+		const srcSet = new SrcSetGenerator({
 			skipOptimization: true
 		});
-		const images = await vinylsFromAsyncIterator(srcset.generate(image, {
+		const images = await vinylsFromAsyncIterator(srcSet.generate(image, {
 			width: [1, 5000]
 		}));
 
@@ -80,10 +83,10 @@ describe('SrcsetGenerator', () => {
 
 	it('should add default postfix', async () => {
 
-		const srcset = new SrcsetGenerator({
+		const srcSet = new SrcSetGenerator({
 			skipOptimization: true
 		});
-		const [imageWithPostfix] = await vinylsFromAsyncIterator(srcset.generate(image, {
+		const [imageWithPostfix] = await vinylsFromAsyncIterator(srcSet.generate(image, {
 			width: [320]
 		}));
 
@@ -93,11 +96,11 @@ describe('SrcsetGenerator', () => {
 
 	it('should add custom postfix', async () => {
 
-		const srcset = new SrcsetGenerator({
+		const srcSet = new SrcSetGenerator({
 			skipOptimization: true,
 			postfix: '@postfix'
 		});
-		const [imageWithPostfix] = await vinylsFromAsyncIterator(srcset.generate(image));
+		const [imageWithPostfix] = await vinylsFromAsyncIterator(srcSet.generate(image));
 
 		expect(imageWithPostfix.stem).toBe('image@postfix');
 		expect(imageWithPostfix.postfix).toBe('@postfix');
@@ -105,7 +108,7 @@ describe('SrcsetGenerator', () => {
 
 	describe('#generate', () => {
 
-		const srcset = new SrcsetGenerator({
+		const srcSet = new SrcSetGenerator({
 			skipOptimization: true
 		});
 
@@ -116,16 +119,16 @@ describe('SrcsetGenerator', () => {
 			bmp.extname = '.bmp';
 
 			expect(
-				vinylsFromAsyncIterator(srcset.generate(bmp))
+				vinylsFromAsyncIterator(srcSet.generate(bmp))
 			).rejects.toThrow();
 		});
 
 		it('should skip optimization', async () => {
 
-			const srcset = new SrcsetGenerator({
+			const srcSet = new SrcSetGenerator({
 				optimization
 			});
-			const [notOptimizedImage] = await vinylsFromAsyncIterator(srcset.generate(image, {
+			const [notOptimizedImage] = await vinylsFromAsyncIterator(srcSet.generate(image, {
 				skipOptimization: true
 			}));
 
@@ -134,7 +137,7 @@ describe('SrcsetGenerator', () => {
 
 		it('should skip scaling up', async () => {
 
-			const images = await vinylsFromAsyncIterator(srcset.generate(image, {
+			const images = await vinylsFromAsyncIterator(srcSet.generate(image, {
 				scalingUp: false,
 				width: [1, 5000]
 			}));
@@ -148,7 +151,7 @@ describe('SrcsetGenerator', () => {
 
 			gif.extname = '.gif';
 
-			const images = await vinylsFromAsyncIterator(srcset.generate(gif, {
+			const images = await vinylsFromAsyncIterator(srcSet.generate(gif, {
 				format: ['jpg', 'webp']
 			}));
 
@@ -161,7 +164,7 @@ describe('SrcsetGenerator', () => {
 
 			gif.extname = '.gif';
 
-			const images = await vinylsFromAsyncIterator(srcset.generate(gif, {
+			const images = await vinylsFromAsyncIterator(srcSet.generate(gif, {
 				format: ['jpg', 'webp', 'gif']
 			}));
 
@@ -170,7 +173,7 @@ describe('SrcsetGenerator', () => {
 
 		it('should add custom postfix', async () => {
 
-			const [imageWithPostfix] = await vinylsFromAsyncIterator(srcset.generate(image, {
+			const [imageWithPostfix] = await vinylsFromAsyncIterator(srcSet.generate(image, {
 				postfix: '@postfix'
 			}));
 
@@ -180,7 +183,7 @@ describe('SrcsetGenerator', () => {
 
 		it('should generate desired widths', async () => {
 
-			const images = await vinylsFromAsyncIterator(srcset.generate(image, {
+			const images = await vinylsFromAsyncIterator(srcSet.generate(image, {
 				width: [1, 1280, 320]
 			}));
 
@@ -192,7 +195,7 @@ describe('SrcsetGenerator', () => {
 
 		it('should generate desired scaled widths', async () => {
 
-			const images = await vinylsFromAsyncIterator(srcset.generate(image, {
+			const images = await vinylsFromAsyncIterator(srcSet.generate(image, {
 				width: [0.33, 0.66, 1]
 			}));
 
@@ -204,7 +207,7 @@ describe('SrcsetGenerator', () => {
 
 		it('should generate desired formats', async () => {
 
-			const images = await vinylsFromAsyncIterator(srcset.generate(image, {
+			const images = await vinylsFromAsyncIterator(srcSet.generate(image, {
 				format: ['jpg', 'webp', 'png']
 			}));
 
@@ -217,7 +220,7 @@ describe('SrcsetGenerator', () => {
 		it('should throw error if desired format is not supported', async () => {
 
 			expect(
-				vinylsFromAsyncIterator(srcset.generate(image, {
+				vinylsFromAsyncIterator(srcSet.generate(image, {
 					format: 'bmp'
 				} as any))
 			).rejects.toThrow();
@@ -226,15 +229,19 @@ describe('SrcsetGenerator', () => {
 		it('should add originMultiplier to metadate', async () => {
 
 			const [
+				w64,
 				x2,
-				x1
-			] = await vinylsFromAsyncIterator(srcset.generate(image, {
+				x1,
+				w320
+			] = await vinylsFromAsyncIterator(srcSet.generate(image, {
 				scalingUp: false,
-				width: [1, .5]
+				width:     [64, 1, .5, 320]
 			}));
 
+			expect(w64.metadata.originMultiplier).toBeFalsy();
 			expect(x2.metadata.originMultiplier).toBe(1);
 			expect(x1.metadata.originMultiplier).toBe(.5);
+			expect(w320.metadata.originMultiplier).toBeFalsy();
 		});
 	});
 });
diff --git a/test/stream.spec.ts b/test/stream.spec.ts
index a1a2e20..e1d050b 100644
--- a/test/stream.spec.ts
+++ b/test/stream.spec.ts
@@ -1,6 +1,6 @@
 import path from 'path';
 import vfs from 'vinyl-fs';
-import srcset from '../src/stream';
+import srcSet from '../src/stream';
 
 jest.setTimeout(50000);
 
@@ -13,7 +13,7 @@ describe('stream', () => {
 		vfs.src(
 			path.join(__dirname, 'images/*.{jpg,png,gif,ico}')
 		)
-			.pipe(srcset([{
+			.pipe(srcSet([{
 				match:  '(min-width: 3000px)',
 				width:  [1, 3200, 1920, 1280, 720, 560, 320],
 				format: ['jpg', 'webp']
@@ -35,7 +35,7 @@ describe('stream', () => {
 		vfs.src(
 			path.join(__dirname, 'images/*.{jpg,png,gif,ico}')
 		)
-			.pipe(srcset([{
+			.pipe(srcSet([{
 				match: '**/*.png',
 				width: [1, .5]
 			}]))