diff --git a/CHANGES.md b/CHANGES.md
index 0bfdb3e46..080d03815 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -7,6 +7,7 @@
 - Allow for nested and rotated boards inside other boards and groups [Taiga #2874](https://tree.taiga.io/project/penpot/us/2874?milestone=319982)
 - View mode improvements to enable access and use in different conditions [Taiga #3023](https://tree.taiga.io/project/penpot/us/3023)
 - Improved share link options. Now you can allow non-team members to comment and/or inspect [Taiga #3056] (https://tree.taiga.io/project/penpot/us/3056)
+- Signin/Signup from shared link [Taiga #3472](https://tree.taiga.io/project/penpot/us/3472)
 
 ### :bug: Bugs fixed
 ### :arrow_up: Deps updates
diff --git a/backend/src/app/rpc/queries/files.clj b/backend/src/app/rpc/queries/files.clj
index 9460be08f..18ec92848 100644
--- a/backend/src/app/rpc/queries/files.clj
+++ b/backend/src/app/rpc/queries/files.clj
@@ -85,7 +85,8 @@
         :is-owner is-owner
         :is-admin (or is-owner is-admin)
         :can-edit (or is-owner is-admin can-edit)
-        :can-read true})))
+        :can-read true
+        :is-logged (some? profile-id)})))
   ([conn profile-id file-id share-id]
    (let [perms  (get-permissions conn profile-id file-id)
          ldata  (retrieve-share-link conn file-id share-id)]
diff --git a/frontend/resources/styles/main/partials/modal.scss b/frontend/resources/styles/main/partials/modal.scss
index b6bce0d27..89f4927ca 100644
--- a/frontend/resources/styles/main/partials/modal.scss
+++ b/frontend/resources/styles/main/partials/modal.scss
@@ -1632,3 +1632,65 @@
     }
   }
 }
+
+//- LOGIN
+.login-register {
+  background-color: $color-white;
+  box-shadow: 0 10px 10px rgba(0, 0, 0, 0.2);
+  display: flex;
+  font-family: "worksans", sans-serif;
+  width: 472px;
+  height: auto;
+  position: relative;
+
+  .title {
+    margin-left: 32px;
+    h2 {
+      font-size: 24px;
+      color: $color-black;
+      line-height: $fs36;
+      letter-spacing: 0px;
+      margin: 0 30px 20px 0;
+    }
+
+    .modal-close-button {
+      margin-top: 7px;
+      margin-right: 12px;
+      justify-content: right;
+      svg {
+        fill: $color-black;
+      }
+    }
+  }
+
+  .modal-bottom {
+    margin: 0 32px;
+    color: #1f1f1f;
+    display: flex;
+    flex-direction: column;
+
+    &.auth-content {
+      align-items: initial;
+      height: auto;
+    }
+
+    .links {
+      margin: 7px 0 0 0;
+      text-align: left;
+    }
+  }
+
+  .modal-footer {
+    justify-content: center;
+    align-items: center;
+
+    .terms-login {
+      position: relative;
+      bottom: 0;
+    }
+  }
+
+  .hint {
+    color: #b1b2b5;
+  }
+}
diff --git a/frontend/src/app/main/ui/auth/login.cljs b/frontend/src/app/main/ui/auth/login.cljs
index 8c9cc7b0a..098386c24 100644
--- a/frontend/src/app/main/ui/auth/login.cljs
+++ b/frontend/src/app/main/ui/auth/login.cljs
@@ -63,7 +63,7 @@
                       (on-error error)))))))
 
 (mf/defc login-form
-  [{:keys [params] :as props}]
+  [{:keys [params on-success-callback] :as props}]
   (let [initial (mf/use-memo (mf/deps params) (constantly params))
 
         error   (mf/use-state false)
@@ -73,10 +73,17 @@
         (fn [_]
           (reset! error (tr "errors.wrong-credentials")))
 
-        on-succes
+        on-success-default
         (fn [data]
           (when-let [token (:invitation-token data)]
             (st/emit! (rt/nav :auth-verify-token {} {:token token}))))
+        
+        on-success
+        (fn [data]
+          (if (nil? on-success-callback)
+            (on-success-default data)
+            (on-success-callback)
+          ))
 
         on-submit
         (mf/use-callback
@@ -84,7 +91,7 @@
            (reset! error nil)
            (let [params (with-meta (:clean-data @form)
                           {:on-error on-error
-                           :on-success on-succes})]
+                           :on-success on-success})]
              (st/emit! (du/login params)))))
 
         on-submit-ldap
@@ -95,7 +102,7 @@
            (let [params (:clean-data @form)]
              (login-with-ldap event (with-meta params
                                       {:on-error on-error
-                                       :on-success on-succes})))))]
+                                       :on-success on-success})))))]
     [:*
      (when-let [message @error]
        [:& msgs/inline-banner
@@ -165,32 +172,37 @@
      [:a {:on-click #(login-with-oauth % :oidc params)}
       (tr "auth.login-with-oidc-submit")]]))
 
+(mf/defc login-methods
+  [{:keys [params on-success-callback] :as props}]
+  [:*
+   (when show-alt-login-buttons?
+     [:*
+      [:span.separator
+       [:span.line]
+       [:span.text (tr "labels.continue-with")]
+       [:span.line]]
+
+      [:div.buttons
+       [:& login-buttons {:params params}]]
+
+      (when (or (contains? @cf/flags :login)
+                (contains? @cf/flags :login-with-ldap))
+        [:span.separator
+         [:span.line]
+         [:span.text (tr "labels.or")]
+         [:span.line]])])
+
+   (when (or (contains? @cf/flags :login)
+             (contains? @cf/flags :login-with-ldap))
+     [:& login-form {:params params :on-success-callback on-success-callback}])])
+
 (mf/defc login-page
   [{:keys [params] :as props}]
   [:div.generic-form.login-form
    [:div.form-container
     [:h1 {:data-test "login-title"} (tr "auth.login-title")]
 
-    (when show-alt-login-buttons?
-      [:*
-       [:span.separator
-        [:span.line]
-        [:span.text (tr "labels.continue-with")]
-        [:span.line]]
-
-       [:div.buttons
-        [:& login-buttons {:params params}]]
-
-       (when (or (contains? @cf/flags :login)
-                 (contains? @cf/flags :login-with-ldap))
-         [:span.separator
-          [:span.line]
-          [:span.text (tr "labels.or")]
-          [:span.line]])])
-
-    (when (or (contains? @cf/flags :login)
-              (contains? @cf/flags :login-with-ldap))
-      [:& login-form {:params params}])
+    [:& login-methods {:params params}]
 
     [:div.links
      (when (contains? @cf/flags :login)
diff --git a/frontend/src/app/main/ui/auth/recovery_request.cljs b/frontend/src/app/main/ui/auth/recovery_request.cljs
index 6477cfb32..436f7cded 100644
--- a/frontend/src/app/main/ui/auth/recovery_request.cljs
+++ b/frontend/src/app/main/ui/auth/recovery_request.cljs
@@ -22,15 +22,19 @@
 (s/def ::recovery-request-form (s/keys :req-un [::email]))
 
 (mf/defc recovery-form
-  []
+  [{:keys [on-success-callback] :as props}]
   (let [form      (fm/use-form :spec ::recovery-request-form :initial {})
         submitted (mf/use-state false)
 
+        default-success-finish #(st/emit! (dm/info (tr "auth.notifications.recovery-token-sent")))
+
         on-success
         (mf/use-callback
-         (fn [_ _]
+         (fn [cdata _]
            (reset! submitted false)
-           (st/emit! (dm/info (tr "auth.notifications.recovery-token-sent")))))
+           (if (nil? on-success-callback)
+             (default-success-finish)
+             (on-success-callback (:email cdata)))))
 
         on-error
         (mf/use-callback
@@ -74,15 +78,17 @@
 ;; --- Recovery Request Page
 
 (mf/defc recovery-request-page
-  []
-  [:section.generic-form
-   [:div.form-container
-    [:h1 (tr "auth.recovery-request-title")]
-    [:div.subtitle (tr "auth.recovery-request-subtitle")]
-    [:& recovery-form]
+  [{:keys [params on-success-callback go-back-callback] :as props}]
+  (let [default-go-back #(st/emit! (rt/nav :auth-login))
+        go-back (or go-back-callback default-go-back)]
+    [:section.generic-form
+     [:div.form-container
+      [:h1 (tr "auth.recovery-request-title")]
+      [:div.subtitle (tr "auth.recovery-request-subtitle")]
+      [:& recovery-form {:params params :on-success-callback on-success-callback}]
 
-    [:div.links
-     [:div.link-entry
-      [:a {:on-click #(st/emit! (rt/nav :auth-login))
-           :data-test "go-back-link"}
-       (tr "labels.go-back")]]]]])
+      [:div.links
+       [:div.link-entry
+        [:a {:on-click go-back
+             :data-test "go-back-link"}
+         (tr "labels.go-back")]]]]]))
diff --git a/frontend/src/app/main/ui/auth/register.cljs b/frontend/src/app/main/ui/auth/register.cljs
index 739b7ad1d..a88fa3737 100644
--- a/frontend/src/app/main/ui/auth/register.cljs
+++ b/frontend/src/app/main/ui/auth/register.cljs
@@ -68,17 +68,23 @@
     (st/emit! (dm/error (tr "errors.generic")))))
 
 (defn- handle-prepare-register-success
-  [_ params]
+  [params]
   (st/emit! (rt/nav :auth-register-validate {} params)))
 
+
 (mf/defc register-form
-  [{:keys [params] :as props}]
+  [{:keys [params on-success-callback] :as props}]
   (let [initial (mf/use-memo (mf/deps params) (constantly params))
         form    (fm/use-form :spec ::register-form
                              :validators [validate]
                              :initial initial)
         submitted? (mf/use-state false)
 
+        on-success (fn [p]
+                     (if (nil? on-success-callback)
+                       (handle-prepare-register-success p)
+                       (on-success-callback p)))
+
         on-submit
         (mf/use-callback
          (fn [form _event]
@@ -87,9 +93,9 @@
              (->> (rp/mutation :prepare-register-profile cdata)
                   (rx/map #(merge % params))
                   (rx/finalize #(reset! submitted? false))
-                  (rx/subs (partial handle-prepare-register-success form)
-                           (partial handle-prepare-register-error form))))))
-        ]
+                  (rx/subs
+                   on-success
+                   (partial handle-prepare-register-error form))))))]
 
 
     [:& fm/form {:on-submit on-submit
@@ -113,15 +119,10 @@
        :disabled @submitted?
        :data-test "register-form-submit"}]]))
 
-(mf/defc register-page
-  [{:keys [params] :as props}]
-  [:div.form-container
-   [:h1 {:data-test "registration-title"} (tr "auth.register-title")]
-   [:div.subtitle (tr "auth.register-subtitle")]
-
-   (when (contains? @cf/flags :demo-warning)
-     [:& demo-warning])
 
+(mf/defc register-methods
+  [{:keys [params on-success-callback] :as props}]
+  [:*
    (when login/show-alt-login-buttons?
      [:*
       [:span.separator
@@ -139,7 +140,19 @@
          [:span.text (tr "labels.or")]
          [:span.line]])])
 
-   [:& register-form {:params params}]
+   [:& register-form {:params params :on-success-callback on-success-callback}]])
+
+(mf/defc register-page
+  [{:keys [params] :as props}]
+  [:div.form-container
+
+   [:h1 {:data-test "registration-title"} (tr "auth.register-title")]
+   [:div.subtitle (tr "auth.register-subtitle")]
+
+   (when (contains? @cf/flags :demo-warning)
+     [:& demo-warning])
+
+   [:& register-methods {:params params}]
 
    [:div.links
     [:div.link-entry
@@ -170,7 +183,7 @@
       (st/emit! (dm/error (tr "errors.generic"))))))
 
 (defn- handle-register-success
-  [_form data]
+  [data]
   (cond
     (some? (:invitation-token data))
     (let [token (:invitation-token data)]
@@ -197,11 +210,16 @@
                      ::accept-newsletter-subscription])))
 
 (mf/defc register-validate-form
-  [{:keys [params] :as props}]
+  [{:keys [params on-success-callback] :as props}]
   (let [form       (fm/use-form :spec ::register-validate-form
                                 :initial params)
         submitted? (mf/use-state false)
 
+        on-success (fn [p]
+                     (if (nil? on-success-callback)
+                       (handle-register-success p)
+                       (on-success-callback (:email p))))
+
         on-submit
         (mf/use-callback
          (fn [form _event]
@@ -209,9 +227,8 @@
            (let [params (:clean-data @form)]
              (->> (rp/mutation :register-profile params)
                   (rx/finalize #(reset! submitted? false))
-                  (rx/subs (partial handle-register-success form)
-                           (partial handle-register-error form))))))
-        ]
+                  (rx/subs on-success
+                           (partial handle-register-error form))))))]
 
     [:& fm/form {:on-submit on-submit
                  :form form}
diff --git a/frontend/src/app/main/ui/viewer.cljs b/frontend/src/app/main/ui/viewer.cljs
index 6ccbc169c..f2f86ace9 100644
--- a/frontend/src/app/main/ui/viewer.cljs
+++ b/frontend/src/app/main/ui/viewer.cljs
@@ -29,6 +29,7 @@
    [app.main.ui.viewer.handoff :as handoff]
    [app.main.ui.viewer.header :refer [header]]
    [app.main.ui.viewer.interactions :as interactions]
+   [app.main.ui.viewer.login]
    [app.main.ui.viewer.thumbnails :refer [thumbnails-panel]]
    [app.util.dom :as dom]
    [app.util.i18n :as i18n :refer [tr]]
@@ -252,8 +253,9 @@
     (when (nil? page)
       (ex/raise :type :not-found))
 
-    (when (not allowed)
-      (st/emit! (dv/go-to-section :interactions)))
+    (mf/with-effect []
+      (when (not allowed)
+        (st/emit! (dv/go-to-section :interactions))))
 
     ;; Set the page title
     (mf/use-effect
diff --git a/frontend/src/app/main/ui/viewer/header.cljs b/frontend/src/app/main/ui/viewer/header.cljs
index 5cde91686..034473649 100644
--- a/frontend/src/app/main/ui/viewer/header.cljs
+++ b/frontend/src/app/main/ui/viewer/header.cljs
@@ -21,6 +21,10 @@
    [app.util.i18n :refer [tr]]
    [rumext.alpha :as mf]))
 
+(defn open-login-dialog
+  []
+  (modal/show! :login-register {}))
+
 (mf/defc zoom-widget
   {::mf/wrap [mf/memo]}
   [{:keys [zoom
@@ -111,7 +115,10 @@
        [:span.btn-primary {:on-click open-share-dialog} i/export [:span (tr "labels.share-prototype")]])
 
      (when (:can-edit permissions)
-       [:span.btn-text-dark {:on-click go-to-workspace} (tr "labels.edit-file")])]))
+       [:span.btn-text-dark {:on-click go-to-workspace} (tr "labels.edit-file")])
+
+     (when-not (:is-logged permissions)
+       [:span.btn-text-dark {:on-click open-login-dialog} (tr "labels.log-or-sign")])]))
 
 (mf/defc header-sitemap
   [{:keys [project file page frame] :as props}]
@@ -176,12 +183,16 @@
         #(st/emit! (dv/go-to-dashboard))
 
         go-to-handoff
-        (fn []
-          (st/emit! dv/close-thumbnails-panel (dv/go-to-section :handoff)))
+        (fn[]
+          (if (:is-logged permissions)
+           (st/emit! dv/close-thumbnails-panel (dv/go-to-section :handoff))
+           (open-login-dialog)))
 
         navigate
         (fn [section]
-          (st/emit! (dv/go-to-section section)))]
+          (if (or (= section :interactions) (:is-logged permissions))
+            (st/emit! (dv/go-to-section section))
+            (open-login-dialog)))]
 
     [:header.viewer-header
      [:div.nav-zone
@@ -200,8 +211,7 @@
        i/play]
 
       (when (or (:can-edit permissions)
-                (and (true? (:is-logged permissions))
-                     (= (:who-comment permissions) "all")))
+                (= (:who-comment permissions) "all"))
         [:button.mode-zone-button.tooltip.tooltip-bottom
          {:on-click #(navigate :comments)
           :class (dom/classnames :active (= section :comments))
@@ -210,7 +220,6 @@
 
       (when (or (= (:type permissions) :membership)
                 (and (= (:type permissions) :share-link)
-                     (true? (:is-logged permissions))
                      (= (:who-inspect permissions) "all")))
         [:button.mode-zone-button.tooltip.tooltip-bottom
          {:on-click go-to-handoff
diff --git a/frontend/src/app/main/ui/viewer/login.cljs b/frontend/src/app/main/ui/viewer/login.cljs
new file mode 100644
index 000000000..0745a3c5f
--- /dev/null
+++ b/frontend/src/app/main/ui/viewer/login.cljs
@@ -0,0 +1,106 @@
+;; This Source Code Form is subject to the terms of the Mozilla Public
+;; License, v. 2.0. If a copy of the MPL was not distributed with this
+;; file, You can obtain one at http://mozilla.org/MPL/2.0/.
+;;
+;; Copyright (c) UXBOX Labs SL
+
+(ns app.main.ui.viewer.login
+  (:require
+   [app.common.logging :as log]
+   [app.main.data.modal :as modal]
+   [app.main.store :as st]
+   [app.main.ui.auth :refer [terms-login]]
+   [app.main.ui.auth.login :refer [login-methods]]
+   [app.main.ui.auth.recovery-request :refer [recovery-request-page]]
+   [app.main.ui.auth.register :refer [register-methods register-validate-form register-success-page]]
+   [app.main.ui.icons :as i]
+   [app.util.dom :as dom]
+   [app.util.i18n :as i18n :refer [tr]]
+   [app.util.storage :refer [storage]]
+   [rumext.alpha :as mf]))
+
+(log/set-level! :warn)
+
+(mf/defc login-register-modal
+  {::mf/register modal/components
+   ::mf/register-as :login-register}
+  [_]
+  (let [uri (. (. js/document -location) -href)
+        user-email (mf/use-state "")
+        register-token (mf/use-state "")
+        current-section (mf/use-state :login)
+        set-current-section (mf/use-fn #(reset! current-section %))
+        main-section (or
+                      (= @current-section :login)
+                      (= @current-section :register)
+                      (= @current-section :register-validate))
+        close
+        (fn [event]
+          (dom/prevent-default event)
+          (st/emit! (modal/hide)))
+        success-email-sent
+        (fn [email]
+          (reset! user-email email)
+          (set-current-section :email-sent))
+        success-login
+        (fn []
+          (.reload js/window.location true))
+        success-register
+        (fn [data]
+          (reset! register-token (:token data))
+          (set-current-section :register-validate))]
+    (mf/with-effect []
+      (swap! storage assoc :redirect-url uri))
+
+    [:div.modal-overlay
+     [:div.modal-container.login-register
+      [:div.title
+       [:div.modal-close-button {:on-click close :title (tr "labels.close")}
+        i/close]
+       (when main-section
+         [:h2 (tr "labels.continue-with-penpot")])]
+
+      [:div.modal-bottom.auth-content
+
+       (case @current-section
+         :login
+         [:div.generic-form.login-form
+          [:div.form-container
+           [:& login-methods {:on-success-callback success-login}]
+           [:div.links
+            [:div.link-entry
+             [:a {:on-click #(set-current-section :recovery-request)}
+              (tr "auth.forgot-password")]]
+            [:div.link-entry
+             [:span (tr "auth.register") " "]
+             [:a {:on-click #(set-current-section :register)}
+              (tr "auth.register-submit")]]]]]
+
+         :register
+         [:div.form-container
+          [:& register-methods {:on-success-callback success-register}]
+          [:div.links
+           [:div.link-entry
+            [:span (tr "auth.already-have-account") " "]
+            [:a {:on-click #(set-current-section :login)}
+             (tr "auth.login-here")]]]]
+
+         :register-validate
+         [:div.form-container
+          [:& register-validate-form {:params {:token @register-token}
+                                      :on-success-callback success-email-sent}]
+          [:div.links
+           [:div.link-entry
+            [:a {:on-click #(set-current-section :register)}
+             (tr "labels.go-back")]]]]
+
+         :recovery-request
+         [:& recovery-request-page {:go-back-callback #(set-current-section :login)
+                                    :on-success-callback success-email-sent}]
+         :email-sent
+         [:div.form-container
+          [:& register-success-page {:params {:email @user-email}}]])]
+
+      (when main-section
+        [:div.modal-footer.links
+         [:& terms-login]])]]))
diff --git a/frontend/translations/en.po b/frontend/translations/en.po
index 3ae8bfe83..99b91eafd 100644
--- a/frontend/translations/en.po
+++ b/frontend/translations/en.po
@@ -1101,6 +1101,9 @@ msgstr "Continue"
 msgid "labels.continue-with"
 msgstr "Continue with"
 
+msgid "labels.continue-with-penpot"
+msgstr "You can continue with a Penpot account"
+
 #: src/app/main/ui/workspace/sidebar/assets.cljs
 msgid "labels.create"
 msgstr "Create"
@@ -1208,6 +1211,9 @@ msgstr "Help Center"
 msgid "labels.hide-resolved-comments"
 msgstr "Hide resolved comments"
 
+msgid "labels.log-or-sign"
+msgstr "Log in or sign up"
+
 msgid "labels.show-comments-list"
 msgstr "Show comments list"
 
diff --git a/frontend/translations/es.po b/frontend/translations/es.po
index dcc6ab4bf..ad8af9bdf 100644
--- a/frontend/translations/es.po
+++ b/frontend/translations/es.po
@@ -1158,6 +1158,9 @@ msgstr "Continuar"
 msgid "labels.continue-with"
 msgstr "Continúa con"
 
+msgid "labels.continue-with-penpot"
+msgstr "Puedes continuar con una cuenta de Penpot"
+
 #: src/app/main/ui/workspace/sidebar/assets.cljs
 msgid "labels.create"
 msgstr "Crear"
@@ -1272,6 +1275,9 @@ msgstr "Centro de ayuda"
 msgid "labels.hide-resolved-comments"
 msgstr "Ocultar comentarios resueltos"
 
+msgid "labels.log-or-sign"
+msgstr "Entra o regístrate"
+
 msgid "labels.show-comments-list"
 msgstr "Mostrar lista de comentarios"