diff --git a/jest.config.js b/jest.config.js
index 4299de529..9ac4a0991 100644
--- a/jest.config.js
+++ b/jest.config.js
@@ -70,6 +70,7 @@ module.exports = {
         "<rootDir>/packages/format-csv",
         "<rootDir>/packages/message-utils",
         "<rootDir>/packages/extractor-vue",
+        "<rootDir>/packages/format-xliff",
       ],
     },
   ],
diff --git a/packages/format-xliff/README.md b/packages/format-xliff/README.md
new file mode 100644
index 000000000..739c7c41d
--- /dev/null
+++ b/packages/format-xliff/README.md
@@ -0,0 +1,77 @@
+[![License][badge-license]][license]
+[![Version][badge-version]][package]
+[![Downloads][badge-downloads]][package]
+
+# @lingui/format-po
+
+> Read and write message catalogs in Gettext PO format with ICU plurals
+
+`@lingui/format-po` is part of [LinguiJS][linguijs]. See the
+[documentation][documentation] for all information, tutorials and examples.
+
+## Catalog example
+
+```po
+#, Comment for translators
+#: src/App.js:4, src/Component.js:2
+msgid "MessageID"
+msgstr "Translated Message"
+```
+
+## Installation
+
+```sh
+npm install --save-dev @lingui/format-po
+# yarn add --dev @lingui/format-po
+```
+
+## Usage
+
+```js
+// lingui.config.{js,ts}
+import {formatter} from "@lingui/format-po"
+
+export default {
+  [...]
+  format: formatter({lineNumbers: false}),
+}
+```
+
+Possible options:
+
+```ts
+export type PoFormatterOptions = {
+  /**
+   * Print places where message is used
+   *
+   * @default true
+   */
+  origins?: boolean
+
+  /**
+   * Print line numbers in origins
+   *
+   * @default true
+   */
+  lineNumbers?: boolean
+  
+  /**
+   * Print `js-lingui-id: Xs4as` statement in extracted comments section
+   *
+   * @default false
+   */
+  printLinguiId?: boolean
+}
+```
+
+## License
+
+This package is licensed under [MIT][license] license.
+
+[license]: https://github.com/lingui/js-lingui/blob/main/LICENSE
+[linguijs]: https://github.com/lingui/js-lingui
+[documentation]: https://lingui.dev
+[package]: https://www.npmjs.com/package/@lingui/format-po
+[badge-downloads]: https://img.shields.io/npm/dw/@lingui/format-po.svg
+[badge-version]: https://img.shields.io/npm/v/@lingui/format-po.svg
+[badge-license]: https://img.shields.io/npm/l/@lingui/format-po.svg
diff --git a/packages/format-xliff/package.json b/packages/format-xliff/package.json
new file mode 100644
index 000000000..1d2a70995
--- /dev/null
+++ b/packages/format-xliff/package.json
@@ -0,0 +1,48 @@
+{
+  "name": "@lingui/format-xliff",
+  "version": "4.0.0",
+  "description": "Gettext PO format for Lingui Catalogs",
+  "main": "./dist/xliff.cjs",
+  "module": "./dist/xliff.mjs",
+  "types": "./dist/xliff.d.ts",
+  "license": "MIT",
+  "keywords": [
+    "i18n",
+    "lingui-format",
+    "lingui-formatter",
+    "xliff",
+    "internationalization",
+    "i10n",
+    "localization",
+    "i9n",
+    "translation"
+  ],
+  "scripts": {
+    "build": "rimraf ./dist && unbuild",
+    "stub": "unbuild --stub"
+  },
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/lingui/js-lingui.git"
+  },
+  "bugs": {
+    "url": "https://github.com/lingui/js-lingui/issues"
+  },
+  "engines": {
+    "node": ">=16.0.0"
+  },
+  "files": [
+    "LICENSE",
+    "README.md",
+    "dist/"
+  ],
+  "dependencies": {
+    "@lingui/cli": "4.1.2",
+    "@lingui/conf": "4.1.2",
+    "xml-js": "^1.6.11"
+  },
+  "devDependencies": {
+    "@lingui/jest-mocks": "workspace:^",
+    "unbuild": "^1.1.2"
+  }
+}
diff --git a/packages/format-xliff/src/__snapshots__/xliff.test.ts.snap b/packages/format-xliff/src/__snapshots__/xliff.test.ts.snap
new file mode 100644
index 000000000..95bc7940c
--- /dev/null
+++ b/packages/format-xliff/src/__snapshots__/xliff.test.ts.snap
@@ -0,0 +1,53 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`xliff format should write catalog in pofile format 1`] = `
+<?xml version="1.0" encoding="UTF-8"?>
+<xliff xmlns="urn:oasis:names:tc:xliff:document:1.2" version="1.2">
+  <file source-language="en" datatype="plaintext" original="js-lingui" target-language="en">
+    <body>
+      <trans-unit id="static" datatype="html">
+        <target><![CDATA[Static message]]></target>
+      </trans-unit>
+      <trans-unit id="withOrigin" datatype="html">
+        <target><![CDATA[Message with origin]]></target>
+        <context-group purpose="location">
+          <context context-type="sourcefile">src/App.js</context>
+          <context context-type="linenumber">4</context>
+        </context-group>
+      </trans-unit>
+      <trans-unit id="withContext" datatype="html">
+        <target><![CDATA[Message with context]]></target>
+        <note priority="1" from="context">my context</note>
+      </trans-unit>
+      <trans-unit id="Dgzql1" datatype="html">
+        <source><![CDATA[with generated id]]></source>
+        <note priority="1" from="context">my context</note>
+      </trans-unit>
+      <trans-unit id="withMultipleOrigins" datatype="html">
+        <target><![CDATA[Message with multiple origin]]></target>
+        <context-group purpose="location">
+          <context context-type="sourcefile">src/App.js</context>
+          <context context-type="linenumber">4</context>
+        </context-group>
+        <context-group purpose="location">
+          <context context-type="sourcefile">src/Component.js</context>
+          <context context-type="linenumber">2</context>
+        </context-group>
+      </trans-unit>
+      <trans-unit id="withDescription" datatype="html">
+        <target><![CDATA[Message with description]]></target>
+        <note priority="1" from="comment">Description is comment from developers to translators</note>
+      </trans-unit>
+      <trans-unit id="veryLongString" datatype="html">
+        <target><![CDATA[One morning, when Gregor Samsa woke from troubled dreams, he found himself transformed in his bed into a horrible vermin. He lay on his armour-like back, and if he lifted his head a little he could see his brown belly, slightly domed and divided by arches into stiff sections. The bedding was hardly able to cover it and seemed ready to slide off any moment. His many legs, pitifully thin compared with the size of the rest of him, waved about helplessly as he looked. "What's happened to me?" he thought. It wasn't a dream. His room, a proper human]]></target>
+      </trans-unit>
+      <trans-unit id="stringWithPlaceholders" datatype="html">
+        <source><![CDATA[Hello {world}]]></source>
+      </trans-unit>
+      <trans-unit id="stringWithJsxPlaceholders" datatype="html">
+        <source><![CDATA[Hello <0>String</0>]]></source>
+      </trans-unit>
+    </body>
+  </file>
+</xliff>
+`;
diff --git a/packages/format-xliff/src/xliff.test.ts b/packages/format-xliff/src/xliff.test.ts
new file mode 100644
index 000000000..53f5f4c0a
--- /dev/null
+++ b/packages/format-xliff/src/xliff.test.ts
@@ -0,0 +1,93 @@
+import { formatter as createFormatter } from "./xliff"
+import { CatalogType } from "@lingui/conf"
+
+describe("xliff format", () => {
+  it("should write catalog in pofile format", async () => {
+    const format = createFormatter({ origins: true })
+
+    const catalog: CatalogType = {
+      static: {
+        translation: "Static message",
+      },
+      withOrigin: {
+        translation: "Message with origin",
+        origin: [["src/App.js", 4]],
+      },
+      withContext: {
+        translation: "Message with context",
+        context: "my context",
+      },
+      Dgzql1: {
+        message: "with generated id",
+        translation: "",
+        context: "my context",
+      },
+      withMultipleOrigins: {
+        translation: "Message with multiple origin",
+        origin: [
+          ["src/App.js", 4],
+          ["src/Component.js", 2],
+        ],
+      },
+      withDescription: {
+        translation: "Message with description",
+        comments: ["Description is comment from developers to translators"],
+      },
+      // obsolete: {
+      //   translation: "Obsolete message",
+      //   obsolete: true,
+      // },
+      // withFlags: {
+      //   flags: ["fuzzy", "otherFlag"],
+      //   translation: "Keeps any flags that are defined",
+      // },
+      veryLongString: {
+        translation:
+          "One morning, when Gregor Samsa woke from troubled dreams, he found himself" +
+          " transformed in his bed into a horrible vermin. He lay on his armour-like" +
+          " back, and if he lifted his head a little he could see his brown belly," +
+          " slightly domed and divided by arches into stiff sections. The bedding was" +
+          " hardly able to cover it and seemed ready to slide off any moment. His many" +
+          " legs, pitifully thin compared with the size of the rest of him, waved about" +
+          " helplessly as he looked. \"What's happened to me?\" he thought. It wasn't" +
+          " a dream. His room, a proper human",
+      },
+
+      stringWithPlaceholders: {
+        message: "Hello {world}",
+        translation: null,
+      },
+
+      stringWithJsxPlaceholders: {
+        message: "Hello <0>String</0>",
+        translation: null,
+      },
+    }
+
+    const actual = format.serialize(catalog, {
+      locale: "en",
+      existing: null,
+    })
+    expect(actual).toMatchSnapshot()
+  })
+
+  it.todo(
+    "should read catalog in xliff format" /*, () => {
+    const format = createFormatter()
+
+    const pofile = fs
+      .readFileSync(path.join(__dirname, "fixtures/messages.po"))
+      .toString()
+
+    const actual = format.parse(pofile)
+    expect(actual).toMatchSnapshot()
+  }*/
+  )
+
+  it.todo("should preserve attributes stored on trans unit")
+  it.todo("should preserve children in trans unit")
+
+  it.todo("should not include origins if origins option is false")
+
+  it.todo("should not include lineNumbers if lineNumbers option is false")
+})
diff --git a/packages/format-xliff/src/xliff.ts b/packages/format-xliff/src/xliff.ts
new file mode 100644
index 000000000..3949d0b5d
--- /dev/null
+++ b/packages/format-xliff/src/xliff.ts
@@ -0,0 +1,195 @@
+import xmlJs from "xml-js"
+
+import {
+  CatalogFormatter,
+  CatalogType,
+  MessageOrigin,
+  MessageType,
+} from "@lingui/conf"
+
+// const splitOrigin = (origin: string) => {
+//   const [file, line] = origin.split(":")
+//   return [file, line ? Number(line) : null] as [file: string, line: number]
+// }
+//
+// const joinOrigin = (origin: [file: string, line?: number]): string =>
+//   origin.join(":")
+
+export type PoFormatterOptions = {
+  /**
+   * Print places where message is used
+   *
+   * @default true
+   */
+  origins?: boolean
+
+  /**
+   * Print line numbers in origins
+   *
+   * @default true
+   */
+  lineNumbers?: boolean
+}
+
+// todo
+// function deserialize(items: POItem[]): CatalogType {
+//   return items.reduce<CatalogType>((catalog, item) => {
+//     const message: MessageType = {
+//       translation: item.msgstr[0],
+//       extractedComments: item.extractedComments || [],
+//       comments: item.comments || [],
+//       context: item.msgctxt ?? null,
+//       obsolete: item.flags.obsolete || item.obsolete,
+//       origin: (item.references || []).map((ref) => splitOrigin(ref)),
+//       flags: Object.keys(item.flags).map((flag) => flag.trim()),
+//     }
+//
+//     let id = item.msgid
+//
+//     // if generated id, recreate it
+//     if (!item.flags[EXPLICIT_ID_FLAG]) {
+//       id = generateMessageId(item.msgid, item.msgctxt)
+//       message.message = item.msgid
+//     }
+//
+//     catalog[id] = message
+//     return catalog
+//   }, {})
+// }
+
+export function formatter(options: PoFormatterOptions = {}) {
+  options = {
+    origins: true,
+    lineNumbers: true,
+    ...options,
+  }
+
+  return {
+    catalogExtension: ".po",
+    templateExtension: ".pot",
+
+    parse(content: string): CatalogType {
+      // todo
+      return {}
+      // const po = PO.parse(content)
+      // return deserialize(po.items)
+    },
+
+    serialize(
+      catalog: CatalogType,
+      ctx: { locale: string; existing: string }
+    ): string {
+      const units = Object.keys(catalog).map((id) => {
+        return createTransUnit(id, catalog[id])
+      })
+
+      const data = createBody("en", ctx.locale, units)
+      return xmlJs.js2xml(data, {
+        spaces: 2,
+      })
+    },
+  } satisfies CatalogFormatter
+}
+
+function createNote(meaning: string, from: string) {
+  return {
+    type: "element",
+    name: "note",
+    attributes: { priority: "1", from },
+    elements: [{ type: "text", text: meaning }],
+  }
+}
+
+function createBody(
+  sourceLang: string,
+  targetLang: string,
+  transUnits: any[]
+): xmlJs.Element {
+  return {
+    declaration: { attributes: { version: "1.0", encoding: "UTF-8" } },
+    elements: [
+      {
+        type: "element",
+        name: "xliff",
+        attributes: {
+          xmlns: "urn:oasis:names:tc:xliff:document:1.2",
+          version: "1.2",
+        },
+        elements: [
+          {
+            type: "element",
+            name: "file",
+            attributes: {
+              "source-language": sourceLang,
+              datatype: "plaintext",
+              original: "js-lingui",
+              "target-language": targetLang,
+            },
+            elements: [
+              {
+                type: "element",
+                name: "body",
+                elements: transUnits,
+              },
+            ],
+          },
+        ],
+      },
+    ],
+  }
+}
+
+function createOrigin([filename, line]: MessageOrigin) {
+  return {
+    type: "element",
+    name: "context-group",
+    attributes: { purpose: "location" },
+    elements: [
+      {
+        type: "element",
+        name: "context",
+        attributes: { "context-type": "sourcefile" },
+        elements: [
+          {
+            type: "text",
+            text: filename,
+          },
+        ],
+      },
+      {
+        type: "element",
+        name: "context",
+        attributes: { "context-type": "linenumber" },
+        elements: [{ type: "text", text: line.toString() }],
+      },
+    ],
+  }
+}
+
+function createElement(name: string, content: string): xmlJs.Element {
+  return {
+    type: "element",
+    name: name,
+    elements: [{ type: "cdata", cdata: content }],
+  }
+}
+
+function createTransUnit(id: string, message: MessageType) {
+  return {
+    type: "element",
+    name: "trans-unit",
+    attributes: {
+      id: id,
+      datatype: "html",
+    },
+    elements: [
+      ...(message.message ? [createElement("source", message.message)] : []),
+      ...(message.translation
+        ? [createElement("target", message.translation)]
+        : []),
+      ...(message.context ? [createNote(message.context, "context")] : []),
+      ...(message.comments || []).map((c) => createNote(c, "comment")),
+      ...(message.origin || []).map((o) => createOrigin(o)),
+    ],
+  }
+}
diff --git a/yarn.lock b/yarn.lock
index f8bcfae74..466b920a1 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2818,6 +2818,18 @@ __metadata:
   languageName: unknown
   linkType: soft
 
+"@lingui/format-xliff@workspace:packages/format-xliff":
+  version: 0.0.0-use.local
+  resolution: "@lingui/format-xliff@workspace:packages/format-xliff"
+  dependencies:
+    "@lingui/cli": 4.1.2
+    "@lingui/conf": 4.1.2
+    "@lingui/jest-mocks": "workspace:^"
+    unbuild: ^1.1.2
+    xml-js: ^1.6.11
+  languageName: unknown
+  linkType: soft
+
 "@lingui/jest-mocks@*, @lingui/jest-mocks@workspace:^, @lingui/jest-mocks@workspace:packages/jest-mocks":
   version: 0.0.0-use.local
   resolution: "@lingui/jest-mocks@workspace:packages/jest-mocks"
@@ -13000,6 +13012,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"sax@npm:^1.2.4":
+  version: 1.2.4
+  resolution: "sax@npm:1.2.4"
+  checksum: d3df7d32b897a2c2f28e941f732c71ba90e27c24f62ee918bd4d9a8cfb3553f2f81e5493c7f0be94a11c1911b643a9108f231dd6f60df3fa9586b5d2e3e9e1fe
+  languageName: node
+  linkType: hard
+
 "saxes@npm:^5.0.1":
   version: 5.0.1
   resolution: "saxes@npm:5.0.1"
@@ -14926,6 +14945,17 @@ __metadata:
   languageName: node
   linkType: hard
 
+"xml-js@npm:^1.6.11":
+  version: 1.6.11
+  resolution: "xml-js@npm:1.6.11"
+  dependencies:
+    sax: ^1.2.4
+  bin:
+    xml-js: ./bin/cli.js
+  checksum: 24a55479919413687105fc2d8ab05e613ebedb1c1bc12258a108e07cff5ef793779297db854800a4edf0281303ebd1f177bc4a588442f5344e62b3dddda26c2b
+  languageName: node
+  linkType: hard
+
 "xml-name-validator@npm:^3.0.0":
   version: 3.0.0
   resolution: "xml-name-validator@npm:3.0.0"