diff --git a/.gitignore b/.gitignore
index b7ed95d..36ea00b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -139,3 +139,6 @@ dist
 # Vite logs files
 vite.config.js.timestamp-*
 vite.config.ts.timestamp-*
+
+# IDE files
+.idea
diff --git a/package-lock.json b/package-lock.json
index 4a41efc..9196714 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -8,6 +8,9 @@
       "name": "prettier-plugin-jte",
       "version": "1.2.0",
       "license": "MIT",
+      "dependencies": {
+        "angular-html-parser": "^10.6.1"
+      },
       "devDependencies": {
         "@types/node": "^24.12.2",
         "prettier": "^3.8.3",
@@ -373,6 +376,7 @@
       "resolved": "https://registry.npmjs.org/@types/node/-/node-24.12.2.tgz",
       "integrity": "sha512-A1sre26ke7HDIuY/M23nd9gfB+nrmhtYyMINbjI1zHJxYteKR6qSMX56FsmjMcDb3SMcjJg5BiRRgOCC/yBD0g==",
       "dev": true,
+      "peer": true,
       "dependencies": {
         "undici-types": "~7.16.0"
       }
@@ -483,6 +487,15 @@
         "url": "https://opencollective.com/vitest"
       }
     },
+    "node_modules/angular-html-parser": {
+      "version": "10.6.1",
+      "resolved": "https://registry.npmjs.org/angular-html-parser/-/angular-html-parser-10.6.1.tgz",
+      "integrity": "sha512-d49rV6cIh8yEYhEs2+YYDOiDLzlRYTKwbBxzitNo21nksKmi0sdU2pypsYi5i6bzV/sL743XrrV/jZZA0VUVIw==",
+      "license": "MIT",
+      "engines": {
+        "node": ">= 14"
+      }
+    },
     "node_modules/assertion-error": {
       "version": "2.0.1",
       "resolved": "https://registry.npmjs.org/assertion-error/-/assertion-error-2.0.1.tgz",
@@ -877,6 +890,7 @@
       "resolved": "https://registry.npmjs.org/picomatch/-/picomatch-4.0.4.tgz",
       "integrity": "sha512-QP88BAKvMam/3NxH6vj2o21R6MjxZUAd6nlwAS/pnGvN9IVLocLHxGYIzFhg6fUQ+5th6P4dv4eW9jX3DSIj7A==",
       "dev": true,
+      "peer": true,
       "engines": {
         "node": ">=12"
       },
@@ -1064,6 +1078,7 @@
       "resolved": "https://registry.npmjs.org/vite/-/vite-8.0.10.tgz",
       "integrity": "sha512-rZuUu9j6J5uotLDs+cAA4O5H4K1SfPliUlQwqa6YEwSrWDZzP4rhm00oJR5snMewjxF5V/K3D4kctsUTsIU9Mw==",
       "dev": true,
+      "peer": true,
       "dependencies": {
         "lightningcss": "^1.32.0",
         "picomatch": "^4.0.4",
diff --git a/package.json b/package.json
index efa5ce6..6f03344 100644
--- a/package.json
+++ b/package.json
@@ -42,5 +42,8 @@
   },
   "peerDependencies": {
     "prettier": "^3.0.0"
+  },
+  "dependencies": {
+    "angular-html-parser": "^10.6.1"
   }
 }
diff --git a/src/parser.ts b/src/parser.ts
index 79e7a39..e0eaecb 100644
--- a/src/parser.ts
+++ b/src/parser.ts
@@ -10,6 +10,7 @@ import {
   Placeholder,
   RootNode,
 } from "./jte";
+import {parseHtml} from "angular-html-parser";
 
 const NOT_FOUND = -1;
 const IGNORE_START = /^<!--\s*prettier-ignore-start\s*-->/;
@@ -30,6 +31,26 @@ export const parse: Parser<Node>["parse"] = (text) => {
   const generatePlaceholder = placeholderGenerator(text);
   root.content = parseFragment(text, root.nodes, generatePlaceholder);
 
+  // Validate HTML using the same parser prettier uses internally
+  const { errors } = parseHtml(root.content, {
+    canSelfClose: true,
+    allowHtmComponentClosingTags: true,
+  });
+
+  if (errors.length > 0) {
+    const error = errors[0];
+    const { msg, span: { start, end } } = error;
+    const startLine = start.line + 1;
+    const startCol = start.col + 1;
+
+    throw new PrettierParseError(
+        `${msg} (${startLine}:${startCol})`,
+        {
+          start: {line: startLine, column: startCol},
+          end: {line: end.line + 1, column: end.col + 1},
+        }
+    );
+  }
   return root;
 };
 
@@ -675,3 +696,22 @@ const replaceAt = (
 ): string => {
   return str.slice(0, start) + replacement + str.slice(start + length);
 };
+
+type ParseErrorLocation = {
+  start: { line: number; column: number };
+  end: { line: number; column: number };
+};
+
+export class PrettierParseError extends SyntaxError {
+  loc: ParseErrorLocation;
+
+  constructor(
+      message: string,
+      loc: ParseErrorLocation
+  ) {
+    super(message);
+    this.name = "PrettierParseError";
+    this.loc = loc;
+  }
+
+}
\ No newline at end of file
diff --git a/test/parser.test.ts b/test/parser.test.ts
index 8682d2a..b172c88 100644
--- a/test/parser.test.ts
+++ b/test/parser.test.ts
@@ -1,5 +1,5 @@
 import { expect, test } from "vitest";
-import { parse } from "../src/parser";
+import { parse, PrettierParseError } from "../src/parser";
 import { ParserOptions } from "prettier";
 
 test("keeps broken expression text untouched", async () => {
@@ -14,3 +14,21 @@ test("keeps broken directive text untouched", async () => {
       .content,
   ).toEqual("<div>@for(var entry : entries </div>");
 });
+test("throws on invalid HTML nesting", () => {
+  const expectedException = new PrettierParseError("Unexpected closing tag \"p\". It may happen when the tag has already been closed by another tag. For more info see https://www.w3.org/TR/html5/syntax.html#closing-elements-that-have-implied-end-tags (1:26)", {
+    start: { line: 1, column: 26 },
+    end: { line: 1, column: 30 },
+  });
+  expect(() =>
+      parse("<p><ul><li>item</li></ul></p>", {} as ParserOptions)
+  ).toThrow(expectedException);
+});
+test("throws on malformed tag", () => {
+  const expectedException = new PrettierParseError("Unexpected character \"EOF\" (1:16)", {
+    start: { line: 1, column: 16 },
+    end: { line: 1, column: 16 },
+  });
+  expect(() =>
+      parse("<strong>Title</", {} as ParserOptions)
+  ).toThrow(expectedException)
+});