diff --git a/src/Components/RightSidebar/RequestSignatureTab.vue b/src/Components/RightSidebar/RequestSignatureTab.vue
index d1e4cda6db..54a13fc44b 100644
--- a/src/Components/RightSidebar/RequestSignatureTab.vue
+++ b/src/Components/RightSidebar/RequestSignatureTab.vue
@@ -58,6 +58,9 @@
 				@click="validationFile()">
 				{{ t('libresign', 'Validate') }}
 			</NcButton>
+			<NcButton @click="openFile()">
+				{{ t('libresign', 'Open file') }}
+			</NcButton>
 		</div>
 		<VisibleElements />
 		<NcModal v-if="modalSrc"
@@ -76,6 +79,7 @@ import axios from '@nextcloud/axios'
 import { getCapabilities } from '@nextcloud/capabilities'
 import { showError, showSuccess } from '@nextcloud/dialogs'
 import { emit, subscribe, unsubscribe } from '@nextcloud/event-bus'
+import { loadState } from '@nextcloud/initial-state'
 import { generateOcsUrl } from '@nextcloud/router'
 
 import NcActionButton from '@nextcloud/vue/components/NcActionButton'
@@ -121,6 +125,8 @@ export default {
 			hasLoading: false,
 			signerToEdit: {},
 			modalSrc: '',
+			document: {},
+			hasInfo: false,
 		}
 	},
 	computed: {
@@ -153,6 +159,9 @@ export default {
 	beforeUnmount() {
 		unsubscribe('libresign:edit-signer')
 	},
+	created() {
+		this.$set(this, 'document', loadState('libresign', 'file_info', {}))
+	},
 	methods: {
 		isSignElementsAvailable() {
 			return getCapabilities()?.libresign?.config?.['sign-elements']?.['is-available'] === true
@@ -264,6 +273,22 @@ export default {
 				})
 			this.hasLoading = false
 		},
+		openFile() {
+			if (OCA?.Viewer !== undefined) {
+				const fileInfo = {
+					source: this.document.file,
+					basename: this.document.name,
+					mime: 'application/pdf',
+					fileid: this.document.nodeId,
+				}
+				OCA.Viewer.open({
+					fileInfo,
+					list: [fileInfo],
+				})
+			} else {
+				window.open(`${this.document.file}?_t=${Date.now()}`)
+			}
+		},
 	},
 }
 </script>
diff --git a/src/views/FilesList/FileEntry/FileEntryActions.vue b/src/views/FilesList/FileEntry/FileEntryActions.vue
index 08bd764992..9c29f81484 100644
--- a/src/views/FilesList/FileEntry/FileEntryActions.vue
+++ b/src/views/FilesList/FileEntry/FileEntryActions.vue
@@ -57,9 +57,12 @@
 
 <script>
 import svgDelete from '@mdi/svg/svg/delete.svg?raw'
+import svgFileDocument from '@mdi/svg/svg/file-document-outline.svg?raw'
 import svgSignature from '@mdi/svg/svg/signature.svg?raw'
 import svgTextBoxCheck from '@mdi/svg/svg/text-box-check.svg?raw'
 
+import { loadState } from '@nextcloud/initial-state'
+
 import NcActionButton from '@nextcloud/vue/components/NcActionButton'
 import NcActions from '@nextcloud/vue/components/NcActions'
 import NcButton from '@nextcloud/vue/components/NcButton'
@@ -116,6 +119,8 @@ export default {
 			confirmDelete: false,
 			deleteFile: true,
 			deleting: false,
+			document: {},
+			hasInfo: false,
 		}
 	},
 	computed: {
@@ -147,6 +152,14 @@ export default {
 			title: t('libresign', 'Delete'),
 			iconSvgInline: svgDelete,
 		})
+		this.registerAction({
+			id: 'open',
+			title: t('libresign', 'Open file'),
+			iconSvgInline: svgFileDocument,
+		})
+	},
+	created() {
+		this.$set(this, 'document', loadState('libresign', 'file_info', {}))
 	},
 	methods: {
 		visibleIf(action) {
@@ -158,6 +171,8 @@ export default {
 				visible = this.filesStore.canValidate(file)
 			} else if (action.id === 'delete') {
 				visible = this.filesStore.canDelete(file)
+			} else if (action.id === 'open') {
+				visible = true
 			}
 			return visible
 		},
@@ -193,6 +208,8 @@ export default {
 				})
 			} else if (action.id === 'delete') {
 				this.confirmDelete = true
+			} else if (action.id === 'open') {
+				this.openFile()
 			}
 		},
 		registerAction(action) {
@@ -203,6 +220,22 @@ export default {
 			await this.filesStore.delete(this.source, this.deleteFile)
 			this.deleting = false
 		},
+		openFile() {
+			if (OCA?.Viewer !== undefined) {
+				const fileInfo = {
+					source: this.document.file,
+					basename: this.document.name,
+					mime: 'application/pdf',
+					fileid: this.document.nodeId,
+				}
+				OCA.Viewer.open({
+					fileInfo,
+					list: [fileInfo],
+				})
+			} else {
+				window.open(`${this.document.file}?_t=${Date.now()}`)
+			}
+		},
 	},
 }
 </script>