diff --git a/src/index.test.ts b/src/index.test.ts
index 4a7f2b0..8a74f6c 100644
--- a/src/index.test.ts
+++ b/src/index.test.ts
@@ -1,31 +1,26 @@
-import { Colorful } from './index.js';
+/* eslint-disable @typescript-eslint/naming-convention */
 import * as builderClasses from './index.js';
 import StyleBuilder from './lib/style_builder.js';
 
 describe('Style Builders', () => {
-	const styleNames = [
-		'Colorful',
-		'Graybeard',
-		'Neutrino',
+	const styles = [
+		{ name: 'Colorful', builderClass: builderClasses.Colorful },
+		{ name: 'Graybeard', builderClass: builderClasses.Graybeard },
+		{ name: 'Neutrino', builderClass: builderClasses.Neutrino },
 	];
 
-	it(`should have the correct ${styleNames.length} styles`, () => {
-		const keys1 = Array.from(Object.keys(builderClasses)).sort();
-		const keys2 = styleNames.sort();
-		expect(keys1).toEqual(keys2);
-	});
-
-	Object.entries(builderClasses).forEach(([styleName, builderClass]) => {
-		it(`should create and test an instance of ${styleName}`, () => {
+	styles.forEach(({ name, builderClass }) => {
+		it(`should create and test an instance of ${name}`, () => {
 			const builder = new builderClass();
 			expect(builder).toBeInstanceOf(StyleBuilder);
 			expect(typeof builder.name).toBe('string');
+			expect(builder.name).toBe(name);
 
 			builder.baseUrl = 'https://example.org';
 			const style = builder.build();
 			expect(JSON.stringify(style).length).toBeGreaterThan(50000);
 
-			expect(style.name).toBe('versatiles-' + styleName.toLowerCase());
+			expect(style.name).toBe('versatiles-' + name.toLowerCase());
 			expect(style.glyphs).toBe('https://example.org/assets/fonts/{fontstack}/{range}.pbf');
 			expect(style.sprite).toBe('https://example.org/assets/sprites/sprites');
 			expect(Object.keys(style.sources).join(',')).toBe('versatiles-shortbread');
@@ -36,9 +31,39 @@ describe('Style Builders', () => {
 });
 
 describe('Colorful', () => {
-	const colorful = new Colorful();
+	const colorful = new builderClasses.Colorful();
 	colorful.baseUrl = 'https://dev.null';
 	colorful.defaultColors.commercial = '#f00';
 	const style = colorful.build();
 	expect(style.glyphs).toBe('https://dev.null/assets/fonts/{fontstack}/{range}.pbf');
 });
+
+describe('guessStyle', () => {
+	it('should build raster styles', () => {
+		const style = builderClasses.guessStyle({
+			type: 'raster',
+			tiles: [],
+			format: 'avif',
+		});
+		expect(style).toStrictEqual({
+			layers: [{ id: 'raster', source: 'rasterSource', type: 'raster' }],
+			sources: { rasterSource: { format: 'avif', tilejson: '3.0.0', tiles: [], type: 'raster' } },
+			version: 8,
+		});
+	});
+
+
+	it('should build vector styles', () => {
+		const style = builderClasses.guessStyle({
+			type: 'vector',
+			tiles: [],
+			format: 'pbf',
+			vector_layers: [],
+		});
+		expect(style).toStrictEqual({
+			layers: [{ id: 'background', paint: { 'background-color': '#fff' }, type: 'background' }],
+			sources: { vectorSource: { format: 'pbf', tilejson: '3.0.0', tiles: [], type: 'vector', 'vector_layers': [] } },
+			'version': 8,
+		});
+	});
+});
diff --git a/src/index.ts b/src/index.ts
index de0dec8..3a47145 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -1,6 +1,8 @@
 
 export type { MaplibreStyle } from './lib/types.js';
 
+export { default as guessStyle } from './lib/style_guesser.js';
+
 export { default as Colorful } from './style/colorful.js';
 export { default as Graybeard } from './style/graybeard.js';
 export { default as Neutrino } from './style/neutrino.js';
diff --git a/src/lib/style_builder.ts b/src/lib/style_builder.ts
index cb9da91..48d7a7a 100644
--- a/src/lib/style_builder.ts
+++ b/src/lib/style_builder.ts
@@ -106,7 +106,7 @@ export default abstract class StyleBuilder<Subclass extends StyleBuilder<Subclas
 		if (this.hideLabels) layers = layers.filter(l => l.type !== 'symbol');
 
 		style.layers = layers;
-		style.name = 'versatiles-' + this.name;
+		style.name = 'versatiles-' + this.name.toLowerCase();
 		style.glyphs = resolveUrl(this.baseUrl, this.glyphsUrl);
 		style.sprite = resolveUrl(this.baseUrl, this.spriteUrl);
 
diff --git a/src/style/colorful.ts b/src/style/colorful.ts
index 7790445..a0a7f73 100644
--- a/src/style/colorful.ts
+++ b/src/style/colorful.ts
@@ -4,7 +4,7 @@ import StyleBuilder from '../lib/style_builder.js';
 import type { StyleRules, StyleRulesOptions } from '../lib/types.js';
 
 export default class Colorful extends StyleBuilder<Colorful> {
-	public readonly name: string = 'colorful';
+	public readonly name: string = 'Colorful';
 
 	public defaultFonts = {
 		regular: 'noto_sans_regular',
diff --git a/src/style/graybeard.ts b/src/style/graybeard.ts
index d96c24e..2eed574 100644
--- a/src/style/graybeard.ts
+++ b/src/style/graybeard.ts
@@ -1,7 +1,7 @@
 import Colorful from './colorful.js';
 
 export default class Graybeard extends Colorful {
-	public readonly name: string = 'graybeard';
+	public readonly name: string = 'Graybeard';
 
 	public constructor() {
 		super();
diff --git a/src/style/neutrino.ts b/src/style/neutrino.ts
index b4a7b32..b9d6b88 100644
--- a/src/style/neutrino.ts
+++ b/src/style/neutrino.ts
@@ -4,7 +4,7 @@ import StyleBuilder from '../lib/style_builder.js';
 import type { StyleRules, StyleRulesOptions } from '../lib/types.js';
 
 export default class Neutrino extends StyleBuilder<Neutrino> {
-	public readonly name: string = 'neutrino';
+	public readonly name: string = 'Neutrino';
 
 	public defaultFonts = {
 		regular: 'noto_sans_regular',