diff --git a/src-ui/angular.json b/src-ui/angular.json
index c3801947d..633be88c5 100644
--- a/src-ui/angular.json
+++ b/src-ui/angular.json
@@ -91,6 +91,11 @@
                 "glob": "**/*",
                 "input": "node_modules/pdfjs-dist/iccs/",
                 "output": "/assets/iccs/"
+              },
+              {
+                "glob": "**/*",
+                "input": "node_modules/pdfjs-dist/cmaps/",
+                "output": "/assets/cmaps/"
               }
             ],
             "styles": [
diff --git a/src-ui/src/app/components/common/pdf-viewer/pdf-viewer.component.spec.ts b/src-ui/src/app/components/common/pdf-viewer/pdf-viewer.component.spec.ts
index bb64cee1f..a3f47abae 100644
--- a/src-ui/src/app/components/common/pdf-viewer/pdf-viewer.component.spec.ts
+++ b/src-ui/src/app/components/common/pdf-viewer/pdf-viewer.component.spec.ts
@@ -90,6 +90,7 @@ describe('PngxPdfViewerComponent', () => {
       withCredentials: true,
       wasmUrl: expect.stringContaining('/paperless/assets/wasm/'),
       iccUrl: expect.stringContaining('/paperless/assets/iccs/'),
+      cMapUrl: expect.stringContaining('/paperless/assets/cmaps/'),
     })
   })
 
diff --git a/src-ui/src/app/components/common/pdf-viewer/pdf-viewer.component.ts b/src-ui/src/app/components/common/pdf-viewer/pdf-viewer.component.ts
index a4a9dbd19..7994e82be 100644
--- a/src-ui/src/app/components/common/pdf-viewer/pdf-viewer.component.ts
+++ b/src-ui/src/app/components/common/pdf-viewer/pdf-viewer.component.ts
@@ -190,6 +190,7 @@ export class PngxPdfViewerComponent
       withCredentials: true,
       wasmUrl: new URL('assets/wasm/', this.document.baseURI).toString(),
       iccUrl: new URL('assets/iccs/', this.document.baseURI).toString(),
+      cMapUrl: new URL('assets/cmaps/', this.document.baseURI).toString(),
     }
     this.loadingTask = getDocument(initOptions)
     try {