diff --git a/addons/website_slides/controllers/main.py b/addons/website_slides/controllers/main.py
index b1c53ed86ab..e4141799000 100644
--- a/addons/website_slides/controllers/main.py
+++ b/addons/website_slides/controllers/main.py
@@ -1133,22 +1133,36 @@ class WebsiteSlides(WebsiteProfile):
 
     @http.route('/slides/embed/<int:slide_id>', type='http', auth='public', website=True, sitemap=False)
     def slides_embed(self, slide_id, page="1", **kw):
-        # Note : don't use the 'model' in the route (use 'slide_id'), otherwise if public cannot access the embedded
-        # slide, the error will be the website.403 page instead of the one of the website_slides.embed_slide.
-        # Do not forget the rendering here will be displayed in the embedded iframe
+        return self._slide_embed(slide_id, page=page, is_external_embed=False, **kw)
+
+    @http.route('/slides/embed_external/<int:slide_id>', type='http', auth='public', website=True, sitemap=False)
+    def slides_embed_external(self, slide_id, page="1", **kw):
+        return self._slide_embed(slide_id, page=page, is_external_embed=True, **kw)
+
+    def _slide_embed(self, slide_id, page="1", is_external_embed=False, **kw):
+        """ Note : don't use the 'model' in the route (use 'slide_id'), otherwise if public cannot
+        access the embedded slide, the error will be the website.403 page instead of the one of the
+        website_slides.embed_slide.
+
+        Do not forget the rendering here will be displayed in the embedded iframe
+
+        Try accessing slide, and display to corresponding template.
+
+        When the content is embedded *externally*, meaning on a third party website, we do some
+        additional steps like displaying sharing controls and also updating some KPIs. """
 
-        # try accessing slide, and display to corresponding template
         try:
             slide = request.env['slide.slide'].browse(slide_id)
-            # determine if it is embedded from external web page
-            referrer_url = request.httprequest.headers.get('Referer', '')
-            base_url = slide.get_base_url()
-            is_embedded = referrer_url and not bool(base_url in referrer_url) or False
-            if is_embedded:
-                request.env['slide.embed'].sudo()._add_embed_url(slide.id, referrer_url)
+            referer_url = request.httprequest.headers.get('Referer', '')
+            if is_external_embed and referer_url:
+                request.env['slide.embed'].sudo()._add_embed_url(
+                    slide.id,
+                    referer_url
+                )
+
             values = self._get_slide_detail(slide)
             values['page'] = page
-            values['is_embedded'] = is_embedded
+            values['is_external_embed'] = is_external_embed
             self._set_viewed_slide(slide)
             return request.render('website_slides.embed_slide', values)
         except AccessError: # TODO : please, make it clean one day, or find another secure way to detect
diff --git a/addons/website_slides/models/slide_slide.py b/addons/website_slides/models/slide_slide.py
index ed11dcf1116..3ebb23d7899 100644
--- a/addons/website_slides/models/slide_slide.py
+++ b/addons/website_slides/models/slide_slide.py
@@ -10,6 +10,7 @@ import PyPDF2
 import json
 
 from dateutil.relativedelta import relativedelta
+from markupsafe import Markup
 from PIL import Image
 from werkzeug import urls
 
@@ -165,6 +166,8 @@ class Slide(models.Model):
     dislikes = fields.Integer('Dislikes', compute='_compute_user_info', store=True, compute_sudo=False)
     user_vote = fields.Integer('User vote', compute='_compute_user_info', compute_sudo=False)
     embed_code = fields.Html('Embed Code', readonly=True, compute='_compute_embed_code', sanitize=False)
+    embed_code_external = fields.Html('External Embed Code', readonly=True, compute='_compute_embed_code', sanitize=False,
+        help="Same as 'Embed Code' but used to embed the content on an external website.")
     # views
     embedcount_ids = fields.One2many('slide.embed', 'slide_id', string="Embed Count")
     slide_views = fields.Integer('# of Website Views', store=True, compute="_compute_slide_views")
@@ -320,26 +323,34 @@ class Slide(models.Model):
     @api.depends('document_id', 'slide_type', 'mime_type')
     def _compute_embed_code(self):
         base_url = request and request.httprequest.url_root
+
         for record in self:
+            embed_code_external = False
+
             if not base_url:
                 base_url = record.get_base_url()
             if base_url[-1] == '/':
                 base_url = base_url[:-1]
             if record.datas and (not record.document_id or record.slide_type in ['document', 'presentation']):
                 slide_url = base_url + url_for('/slides/embed/%s?page=1' % record.id)
-                record.embed_code = '<iframe src="%s" class="o_wslides_iframe_viewer" allowFullScreen="true" height="%s" width="%s" frameborder="0"></iframe>' % (slide_url, 315, 420)
+                slide_url_external = base_url + url_for('/slides/embed_external/%s?page=1' % record.id)
+                base_embed_code = Markup('<iframe src="%s" class="o_wslides_iframe_viewer" allowFullScreen="true" height="%s" width="%s" frameborder="0"></iframe>')
+                record.embed_code = base_embed_code % (slide_url, 315, 420)
+                embed_code_external = base_embed_code % (slide_url_external, 315, 420)
             elif record.slide_type == 'video' and record.document_id:
                 if not record.mime_type:
                     # embed youtube video
                     query = urls.url_parse(record.url).query
                     query = query + '&theme=light' if query else 'theme=light'
-                    record.embed_code = '<iframe src="//www.youtube-nocookie.com/embed/%s?%s" allowFullScreen="true" frameborder="0"></iframe>' % (record.document_id, query)
+                    record.embed_code = Markup('<iframe src="//www.youtube-nocookie.com/embed/%s?%s" allowFullScreen="true" frameborder="0"></iframe>') % (record.document_id, query)
                 else:
                     # embed google doc video
-                    record.embed_code = '<iframe src="//drive.google.com/file/d/%s/preview" allowFullScreen="true" frameborder="0"></iframe>' % (record.document_id)
+                    record.embed_code = Markup('<iframe src="//drive.google.com/file/d/%s/preview" allowFullScreen="true" frameborder="0"></iframe>') % (record.document_id)
             else:
                 record.embed_code = False
 
+            record.embed_code_external = embed_code_external or record.embed_code
+
     @api.onchange('url')
     def _on_change_url(self):
         self.ensure_one()
diff --git a/addons/website_slides/views/website_slides_templates_lesson.xml b/addons/website_slides/views/website_slides_templates_lesson.xml
index 5896f2c6520..a8fca2cf76d 100644
--- a/addons/website_slides/views/website_slides_templates_lesson.xml
+++ b/addons/website_slides/views/website_slides_templates_lesson.xml
@@ -552,7 +552,10 @@
     <div class="oe_slide_js_embed_code_widget mt-4">
         <h5 class="mt0">Embed in your website</h5>
         <div class="form-group">
-            <textarea class="form-control slide_embed_code" readonly="readonly" onClick="this.select();"><t t-esc="slide.embed_code"/></textarea>
+            <textarea class="form-control slide_embed_code" readonly="readonly" onClick="this.select();">
+                <!-- Use the external embedding URL here, see python controller '_slide_embed' method for more details. -->
+                <t t-esc="slide.embed_code_external"/>
+            </textarea>
         </div>
         <div class="form-group d-flex" t-if="slide.slide_type in ('presentation', 'document')">
             <div class="form-text p-0 col-xs-5 col-sm-5 col-md-5 col-lg-5">Select page to start with</div>
diff --git a/addons/website_slides/views/website_slides_templates_lesson_embed.xml b/addons/website_slides/views/website_slides_templates_lesson_embed.xml
index b5edd67fe96..14852a4b2c0 100644
--- a/addons/website_slides/views/website_slides_templates_lesson_embed.xml
+++ b/addons/website_slides/views/website_slides_templates_lesson_embed.xml
@@ -17,7 +17,7 @@
                 <body>
                     <div id="PDFViewer" class="o_wslides_fs_pdf_viewer d-flex flex-column h-100">
                         <!-- PDF Viewer Header : contains the name, and the share links -->
-                        <div t-if="is_embedded" class="oe_slides_share_bar">
+                        <div t-if="is_external_embed" class="oe_slides_share_bar">
                             <div class="container-fluid">
                                 <div class="row align-items-center">
                                     <div class="col">
@@ -41,7 +41,7 @@
                                 t-attf-data-slideurl="/slides/slide/#{slug(slide)}/pdf_content"
                                 t-attf-data-downloadable="#{False}"
                                 t-att-data-defaultpage="page">
-                            <t t-if="is_embedded">
+                            <t t-if="is_external_embed">
                                 <div id="slide_share" class="oe_slide_embed_option" style="display: none;">
                                     <t t-call="website_slides.slide_share_modal">
                                         <t t-set="record" t-value="slide"/>