diff --git a/lib/Service/AttachmentService.php b/lib/Service/AttachmentService.php
index 6aaa9eec15f..44fbdf552ed 100755
--- a/lib/Service/AttachmentService.php
+++ b/lib/Service/AttachmentService.php
@@ -640,6 +640,11 @@ private function getShareFolder(string $shareToken): ?Folder {
 	public function cleanupAttachments(int $fileId): int {
 		$textFile = $this->rootFolder->getFirstNodeById($fileId);
 		if ($textFile instanceof File) {
+			if ($textFile->getStorage()->instanceOfStorage(\OCA\Collectives\Mount\CollectiveStorage::class)) {
+				// Don't cleanup attachments for Collectives pages
+				return 0;
+			}
+
 			if ($textFile->getMimeType() === 'text/markdown') {
 				// get IDs of the files inside the attachment dir
 				try {
diff --git a/src/editor.js b/src/editor.js
index 0976e2c440d..48622fc9a68 100644
--- a/src/editor.js
+++ b/src/editor.js
@@ -13,6 +13,7 @@ import {
 	OPEN_LINK_HANDLER,
 } from './components/Editor.provider.ts'
 import { ACTION_ATTACHMENT_PROMPT } from './components/Editor/MediaHandler.provider.js'
+import { encodeAttachmentFilename } from './helpers/attachmentFilename.ts'
 import { openLink } from './helpers/links.js'
 // eslint-disable-next-line import/no-unresolved, n/no-missing-import
 import 'vite/modulepreload-polyfill'
@@ -70,6 +71,11 @@ class TextEditorEmbed {
 		return this
 	}
 
+	onAttachmentsUpdated(onAttachmentsUpdatedCallback = () => {}) {
+		subscribe('text:editor:attachments:updated', onAttachmentsUpdatedCallback)
+		return this
+	}
+
 	render(el) {
 		el.innerHTML = ''
 		const element = document.createElement('div')
@@ -138,6 +144,55 @@ class TextEditorEmbed {
 			.run()
 	}
 
+	replaceAttachmentFilename(pageId, oldName, newName) {
+		const oldSrc =
+			'.attachments.' + pageId + '/' + encodeAttachmentFilename(oldName)
+		const newSrc =
+			'.attachments.' + pageId + '/' + encodeAttachmentFilename(newName)
+		const { view, state } = this.#getEditorComponent().editor
+		const { doc, schema, tr } = state
+		let modified = false
+
+		doc.descendants((node, pos) => {
+			if (!node.type === schema.nodes.image || node.attrs.src !== oldSrc) {
+				return
+			}
+
+			tr.setNodeMarkup(pos, undefined, {
+				...node.attrs,
+				src: newSrc,
+				alt: node.attrs.alt.replace(oldName, newName),
+			})
+			modified = true
+		})
+
+		if (modified) {
+			view.dispatch(tr)
+			this.save()
+		}
+	}
+
+	removeAttachmentReferences(pageId, name) {
+		const src = '.attachments.' + pageId + '/' + encodeAttachmentFilename(name)
+		const { view, state } = this.#getEditorComponent().editor
+		const { doc, schema, tr } = state
+		let modified = false
+
+		doc.descendants((node, pos) => {
+			if (!node.type === schema.nodes.image || node.attrs.src !== src) {
+				return
+			}
+
+			tr.delete(pos, pos + node.nodeSize)
+			modified = true
+		})
+
+		if (modified) {
+			view.dispatch(tr)
+			this.save()
+		}
+	}
+
 	focus() {
 		this.#getEditorComponent().editor?.commands.focus()
 	}
@@ -201,6 +256,7 @@ window.OCA.Text.createEditor = async function ({
 	onMentionInsert = undefined,
 	openLinkHandler = undefined,
 	onSearch = undefined,
+	onAttachmentsUpdated = ({ attachmentSrcs }) => {},
 }) {
 	const { default: MarkdownContentEditor } = await import(
 		/* webpackChunkName: "editor" */ './components/Editor/MarkdownContentEditor.vue'
@@ -286,6 +342,7 @@ window.OCA.Text.createEditor = async function ({
 		.onUpdate(onUpdate)
 		.onOutlineToggle(onOutlineToggle)
 		.onSearch(onSearch)
+		.onAttachmentsUpdated(onAttachmentsUpdated)
 		.render(el)
 }
 
diff --git a/src/helpers/attachmentFilename.ts b/src/helpers/attachmentFilename.ts
new file mode 100644
index 00000000000..81c66305e60
--- /dev/null
+++ b/src/helpers/attachmentFilename.ts
@@ -0,0 +1,15 @@
+/**
+ * SPDX-FileCopyrightText: 2026 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+
+/**
+ * Encode filename the same way as at `insertAttachment` in MediaHandler.vue
+ *
+ * @param filename - The filename to encode
+ */
+export function encodeAttachmentFilename(filename: string) {
+	return encodeURIComponent(filename).replace(/[!'()*]/g, (c) => {
+		return '%' + c.charCodeAt(0).toString(16).toUpperCase()
+	})
+}
diff --git a/src/nodes/Image.js b/src/nodes/Image.js
index 231c609f7de..93491b55847 100644
--- a/src/nodes/Image.js
+++ b/src/nodes/Image.js
@@ -3,12 +3,17 @@
  * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 
+import { emit } from '@nextcloud/event-bus'
 import TiptapImage from '@tiptap/extension-image'
 import { defaultMarkdownSerializer } from '@tiptap/pm/markdown'
-import { Plugin } from '@tiptap/pm/state'
+import { Plugin, PluginKey } from '@tiptap/pm/state'
 import { VueNodeViewRenderer } from '@tiptap/vue-2'
+import extractAttachmentSrcs from '../plugins/extractAttachmentSrcs.ts'
 import ImageView from './ImageView.vue'
 
+const imageFileDropPluginKey = new PluginKey('imageFileDrop')
+const imageExtractAttachmentsKey = new PluginKey('imageExtractAttachments')
+
 const Image = TiptapImage.extend({
 	selectable: false,
 
@@ -41,6 +46,7 @@ const Image = TiptapImage.extend({
 	addProseMirrorPlugins() {
 		return [
 			new Plugin({
+				key: imageFileDropPluginKey,
 				props: {
 					handleDrop: (view, event, slice) => {
 						// only catch the drop if it contains files
@@ -82,6 +88,31 @@ const Image = TiptapImage.extend({
 					},
 				},
 			}),
+			new Plugin({
+				key: imageExtractAttachmentsKey,
+				state: {
+					init(_, { doc }) {
+						const attachmentSrcs = extractAttachmentSrcs(doc)
+						emit('text:editor:attachments:updated', { attachmentSrcs })
+						return { attachmentSrcs }
+					},
+					apply(tr, value, _oldState, newState) {
+						if (!tr.docChanged) {
+							return value
+						}
+						const attachmentSrcs = extractAttachmentSrcs(newState.doc)
+						if (
+							JSON.stringify(attachmentSrcs)
+							=== JSON.stringify(value?.attachmentSrcs)
+						) {
+							return value
+						}
+
+						emit('text:editor:attachments:updated', { attachmentSrcs })
+						return { attachmentSrcs }
+					},
+				},
+			}),
 		]
 	},
 
diff --git a/src/plugins/extractAttachmentSrcs.ts b/src/plugins/extractAttachmentSrcs.ts
new file mode 100644
index 00000000000..abde6604f7b
--- /dev/null
+++ b/src/plugins/extractAttachmentSrcs.ts
@@ -0,0 +1,31 @@
+/**
+ * SPDX-FileCopyrightText: 2026 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+
+import type { Node } from '@tiptap/pm/model'
+
+/**
+ * Extract attachment src attributes from doc
+ *
+ * @param doc - the prosemirror doc
+ * @return src attributes of attachments found in the doc
+ */
+export default function extractAttachmentSrcs(doc: Node) {
+	const attachmentSrcs: string[] = []
+
+	doc.descendants((node) => {
+		if (node.type.name !== 'image' && node.type.name !== 'imageInline') {
+			return
+		}
+
+		// ignore empty src
+		if (!node.attrs.src) {
+			return
+		}
+
+		attachmentSrcs.push(node.attrs.src)
+	})
+
+	return attachmentSrcs
+}
diff --git a/src/tests/plugins/extractAttachmentSrcs.spec.js b/src/tests/plugins/extractAttachmentSrcs.spec.js
new file mode 100644
index 00000000000..22b64f2aad4
--- /dev/null
+++ b/src/tests/plugins/extractAttachmentSrcs.spec.js
@@ -0,0 +1,41 @@
+/**
+ * SPDX-FileCopyrightText: 2026 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+
+import Image from '../../nodes/Image.js'
+import extractAttachmentSrcs from '../../plugins/extractAttachmentSrcs.ts'
+import createCustomEditor from '../testHelpers/createCustomEditor.ts'
+
+describe('extractAttachmentSrcs', () => {
+	it('returns an empty array for an empty doc', () => {
+		const doc = prepareDoc('')
+		const attachmentSrcs = extractAttachmentSrcs(doc)
+		expect(attachmentSrcs).toEqual([])
+	})
+
+	it('returns headings', () => {
+		const content =
+			'<figure><img src=".attachments.123/test.pdf"></figure><br><figure><img src=".attachments.456/test2.png"></figure>'
+		const doc = prepareDoc(content)
+		const attachmentSrcs = extractAttachmentSrcs(doc)
+		expect(attachmentSrcs).toEqual([
+			'.attachments.123/test.pdf',
+			'.attachments.456/test2.png',
+		])
+	})
+
+	it('ignores an empty src', () => {
+		const content = '<img>'
+		const doc = prepareDoc(content)
+		const attachmentSrcs = extractAttachmentSrcs(doc)
+		expect(attachmentSrcs).toEqual([])
+	})
+})
+
+const prepareDoc = (content) => {
+	const editor = createCustomEditor(content, [Image])
+	const doc = editor.state.doc
+	editor.destroy()
+	return doc
+}
diff --git a/tests/stub.php b/tests/stub.php
index d08c0201581..cd14233ef89 100644
--- a/tests/stub.php
+++ b/tests/stub.php
@@ -12,6 +12,24 @@ class BaseResponse {
 	}
 }
 
+namespace OC\Files\Storage\Wrapper {
+	use OCP\Files\Storage\IStorage;
+
+	class Wrapper implements IStorage {
+		public function __construct(array $parameters) {
+		}
+	}
+}
+
+namespace OCA\Collectives\Mount {
+
+	use OC\Files\Storage\Wrapper\Wrapper;
+	use OCP\Files\Storage\IConstructableStorage;
+
+	class CollectiveStorage extends Wrapper implements IConstructableStorage {
+	}
+}
+
 namespace OCA\Files\Event {
 	class LoadAdditionalScriptsEvent extends \OCP\EventDispatcher\Event {
 	}