diff --git a/core.js b/core.js
index e349edea..73f6a7b3 100644
--- a/core.js
+++ b/core.js
@@ -519,6 +519,14 @@ export class FileTypeParser {
 						return {
 							stop: true,
 						};
+					case 'META-INF/MANIFEST.MF':
+						fileType = {
+							ext: 'jar',
+							mime: 'application/java-archive',
+						};
+						return {
+							stop: true,
+						};
 					case 'mimetype':
 						return {
 							async handler(fileData) {
diff --git a/fixture/fixture.jar b/fixture/fixture.jar
new file mode 100644
index 00000000..948b2ea5
Binary files /dev/null and b/fixture/fixture.jar differ
diff --git a/package.json b/package.json
index 59101399..8dced6ed 100644
--- a/package.json
+++ b/package.json
@@ -233,7 +233,8 @@
 		"docm",
 		"dotm",
 		"potm",
-		"pptm"
+		"pptm",
+		"jar"
 	],
 	"dependencies": {
 		"@tokenizer/inflate": "^0.2.6",
diff --git a/readme.md b/readme.md
index 9cb86064..5c22f3f9 100644
--- a/readme.md
+++ b/readme.md
@@ -484,6 +484,7 @@ abortController.abort(); // Abort file-type reading from the Blob stream.
 - [`indd`](https://en.wikipedia.org/wiki/Adobe_InDesign#File_format) - Adobe InDesign document
 - [`it`](https://wiki.openmpt.org/Manual:_Module_formats#The_Impulse_Tracker_format_.28.it.29) - Audio module format: Impulse Tracker
 - [`j2c`](https://en.wikipedia.org/wiki/JPEG_2000) - JPEG 2000
+- [`jar`](https://en.wikipedia.org/wiki/JAR_(file_format)) - Java archive
 - [`jls`](https://en.wikipedia.org/wiki/Lossless_JPEG#JPEG-LS) - Lossless/near-lossless compression standard for continuous-tone images
 - [`jp2`](https://en.wikipedia.org/wiki/JPEG_2000) - JPEG 2000
 - [`jpg`](https://en.wikipedia.org/wiki/JPEG) - Joint Photographic Experts Group image
diff --git a/supported.js b/supported.js
index ed98dac6..54d6dcd3 100644
--- a/supported.js
+++ b/supported.js
@@ -170,6 +170,7 @@ export const extensions = [
 	'dotm',
 	'potm',
 	'pptm',
+	'jar',
 ];
 
 export const mimeTypes = [
@@ -339,4 +340,5 @@ export const mimeTypes = [
 	'application/vnd.ms-word.template.macroEnabled.12',
 	'application/vnd.ms-powerpoint.template.macroEnabled.12',
 	'application/vnd.ms-powerpoint.presentation.macroEnabled.12',
+	'application/java-archive',
 ];