diff --git a/packages/cli/src/transforms/toktx.ts b/packages/cli/src/transforms/toktx.ts
index 255fa215..361084fc 100644
--- a/packages/cli/src/transforms/toktx.ts
+++ b/packages/cli/src/transforms/toktx.ts
@@ -260,7 +260,7 @@ export const toktx = function (options: ETC1SOptions | UASTCOptions): Transform
 				const srcPath = join(batchDir.name, `${batchPrefix}_${textureIndex}.${srcExtension}`);
 				const dstPath = join(batchDir.name, `${batchPrefix}_${textureIndex}.ktx2`);
 
-				await fs.writeFile(srcPath, Buffer.from(srcImage));
+				await fs.writeFile(srcPath, srcImage);
 
 				const params = [
 					'create',
diff --git a/packages/cli/test/cli.test.ts b/packages/cli/test/cli.test.ts
index f94a10f6..b4fe7996 100644
--- a/packages/cli/test/cli.test.ts
+++ b/packages/cli/test/cli.test.ts
@@ -135,7 +135,7 @@ test('merge', async (t) => {
 		.setBuffer(bufB);
 	await io.write(inputB, documentB);
 
-	fs.writeFileSync(inputC, Buffer.from([1, 2, 3, 4, 5]));
+	fs.writeFileSync(inputC, new Uint8Array([1, 2, 3, 4, 5]));
 
 	await program
 		// https://github.com/mattallty/Caporal.js/issues/195
diff --git a/packages/core/src/io/node-io.ts b/packages/core/src/io/node-io.ts
index 68b2eb52..ca9228e4 100644
--- a/packages/core/src/io/node-io.ts
+++ b/packages/core/src/io/node-io.ts
@@ -177,7 +177,7 @@ export class NodeIO extends PlatformIO {
 
 	/** @internal */
 	private async _writeGLB(uri: string, doc: Document): Promise<void> {
-		const buffer = Buffer.from(await this.writeBinary(doc));
+		const buffer = await this.writeBinary(doc);
 		await this._fs.writeFile(uri, buffer);
 		this.lastWriteBytes = buffer.byteLength;
 	}
diff --git a/packages/core/src/utils/buffer-utils.ts b/packages/core/src/utils/buffer-utils.ts
index cd012c1a..5cc3703d 100644
--- a/packages/core/src/utils/buffer-utils.ts
+++ b/packages/core/src/utils/buffer-utils.ts
@@ -26,18 +26,12 @@ export class BufferUtils {
 
 	/** Encodes text to a byte array. */
 	static encodeText(text: string): Uint8Array {
-		if (typeof TextEncoder !== 'undefined') {
-			return new TextEncoder().encode(text);
-		}
-		return Buffer.from(text);
+		return new TextEncoder().encode(text);
 	}
 
 	/** Decodes a byte array to text. */
 	static decodeText(array: Uint8Array): string {
-		if (typeof TextDecoder !== 'undefined') {
-			return new TextDecoder().decode(array);
-		}
-		return Buffer.from(array).toString('utf8');
+		return new TextDecoder().decode(array);
 	}
 
 	/**
diff --git a/packages/core/test/utils/buffer-utils.test.ts b/packages/core/test/utils/buffer-utils.test.ts
index 04ba082c..aaea1f9b 100644
--- a/packages/core/test/utils/buffer-utils.test.ts
+++ b/packages/core/test/utils/buffer-utils.test.ts
@@ -24,7 +24,7 @@ test('node.js', (t) => {
 	);
 	t.is(BufferUtils.decodeText(BufferUtils.encodeText('hey')), 'hey', 'encode/decode');
 
-	const buffer = Buffer.from([1, 2]);
+	const buffer = new Uint8Array([1, 2]);
 	t.is(BufferUtils.equals(buffer, buffer), true, 'equals strict');
-	t.is(BufferUtils.equals(buffer, Buffer.from([1])), false, 'equals by length');
+	t.is(BufferUtils.equals(buffer, new Uint8Array([1])), false, 'equals by length');
 });