diff --git a/addons/web_editor/static/src/js/editor/odoo-editor/src/OdooEditor.js b/addons/web_editor/static/src/js/editor/odoo-editor/src/OdooEditor.js
index 26994bf0da7..1a66644a437 100644
--- a/addons/web_editor/static/src/js/editor/odoo-editor/src/OdooEditor.js
+++ b/addons/web_editor/static/src/js/editor/odoo-editor/src/OdooEditor.js
@@ -4630,15 +4630,22 @@ export class OdooEditor extends EventTarget {
         const promises = [];
         for (const imageFile of imageFiles) {
             const imageNode = document.createElement('img');
-            imageNode.style.width = '100%';
             imageNode.classList.add('img-fluid');
+            // Mark images as having to be saved as attachments.
+            if (this.options.dropImageAsAttachment) {
+                imageNode.classList.add('o_b64_image_to_save');
+            }
             imageNode.dataset.fileName = imageFile.name;
             promises.push(getImageUrl(imageFile).then(url => {
                 imageNode.src = url;
-                return imageNode.outerHTML;
+                return imageNode;
             }));
         }
-        return Promise.all(promises).then(html => html.join(''));
+        return Promise.all(promises).then(nodes => {
+            const fragment = document.createDocumentFragment();
+            fragment.append(...nodes);
+            return fragment;
+        });
     }
     /**
      * Handle safe pasting of html or plain text into the editor.
@@ -4676,13 +4683,7 @@ export class OdooEditor extends EventTarget {
             // the clipboard picture.
             if (files.length && !clipboardElem.querySelector('table')) {
                 this.addImagesFiles(files).then(html => {
-                    const imageNodes = this._applyCommand('insert', this._prepareClipboardData(html));
-                    if (imageNodes && this.options.dropImageAsAttachment) {
-                        // Mark images as having to be saved as attachments.
-                        for (const imageNode of imageNodes) {
-                            imageNode.classList.add('o_b64_image_to_save');
-                        }
-                    }
+                    this._applyCommand('insert', html);
                 });
             } else {
                 if (closestElement(sel.anchorNode, 'a')) {
@@ -4873,13 +4874,7 @@ export class OdooEditor extends EventTarget {
             this.execCommand('insert', this._prepareClipboardData(html));
         } else if (fileTransferItems.length) {
             this.addImagesFiles(fileTransferItems).then(html => {
-                const imageNodes = this.execCommand('insert', this._prepareClipboardData(html));
-                if (imageNodes && this.options.dropImageAsAttachment) {
-                    // Mark images as having to be saved as attachments.
-                    for (const imageNode of imageNodes) {
-                        imageNode.classList.add('o_b64_image_to_save');
-                    }
-                }
+                this.execCommand('insert', html);
             });
         } else if (htmlTransferItem) {
             htmlTransferItem.getAsString(pastedText => {