diff --git a/dist/styles/sass.css b/dist/styles/sass.css
index 452d122df888eb48370c84f5b55e11c789c53e0b..03275e1ac452c577ef526fb69a84f7eff09c4480 100644
--- a/dist/styles/sass.css
+++ b/dist/styles/sass.css
@@ -1018,6 +1018,17 @@ select.form-control {
   padding: 4px 16px 12px;
 }
 
+.action-upload-button {
+  position: relative;
+}
+.action-upload-button__spinner {
+  position: absolute;
+  width: 23px;
+  height: 23px;
+  left: -32px;
+  top: 6px;
+}
+
 .range {
   width: 400px;
   /* some space for the right knob */
diff --git a/dist/styles/sass.css.map b/dist/styles/sass.css.map
index 4dacc6ebea0c6133181dff801e557f7bbe5444c5..68aa01e95dd8f7d96d1a6be7caf3f1a4bbe73f47 100644
--- a/dist/styles/sass.css.map
+++ b/dist/styles/sass.css.map
@@ -1 +1 @@
-{"version":3,"sourceRoot":"","sources":["../../src/sass/_menu.sass","../../src/sass/_context_menu.sass","../../src/sass/_graph.sass","../../src/sass/_login.sass","../../src/sass/_tree.sass","../../src/sass/abstract/_members.scss","../../src/sass/_code_editor.sass","../../src/sass/_styles.sass","../../src/sass/_range_slider.sass","../../src/sass/_annotation.sass","../../src/sass/_folder_view.sass"],"names":[],"mappings":"AAEA;AAEA;AACA;AACA;AACA;AACA;AAEA;EACE;EACA;EACA;EACA;EAEA;;;AAEF;EACI;EACA;;;AAEJ;EACI;EACA;EACA;EACA;;;AAEJ;EACE;;;AAEF;AACI;EACA;;;AAEJ;AACI;EACA;;;AAGJ;AACA;EACI;;;AAEJ;EACI;EACA;EACA;EACA;;;AAEJ;EACE;EACA;;;AAEF;EACE;;;AAME;EACE;;;AC9DN;EACE;EACA;EACA;EACA;EACA;;;AAEF;EACE;;;AAEF;EACE;EACA;EACA;EACA;EACA;EACA;EACA;;;AAEF;EACE;EACA;EACA;;;AAEF;EACE;;;AClBF;EACE;EACA;EACA;;;AAEF;AAkCE;AACA;AACA;AACA;AACA;AACA;AACA;AACA;;AAxCA;EAZA;EACA;EAEA;EAWE;EACA;EACA;EACA;;AAEA;EACE;EACA;;AAEF;EACE;EACA;;AAGA;EACE;EACA;;AACN;EACE;;AACF;EACE;;AAEF;EApCA;EACA;EAEA;EAmCE;EACA;;AACF;EACE;;AACF;EACE;;AAWF;EAEE;EAEA;EACA;EACA;EAEA;EACA;EACA;;AAEA;EACE;;AAEJ;EACE;;AAEA;EACE;;AAEJ;EACE;EACA;;;AAGF;EACE;EACA;EACA;EACA;EACA;;;ACjFJ;EACE;;AACA;EACE;EACA;;;AAEJ;EACE;;;AAEF;EACE;;;AAEF;EACE;;;AAGF;EACE;;AAEE;EACE;EACA;;AACA;EACE;;;AAIJ;EACE;EACA;EACA;EACA;;;AAKJ;EACE;EACA;EACA;;;AAEJ;EACE;EACA;EACA;EACA;EACA;;AAGE;EACE;;;AAEN;EACE;EACA;EACA;EACA;EACA;;AAGE;EACE;;;AAEN;EACE;EACA;EACA;EACA;EACA;EACA;EACA;EACA;EACA;;AAEA;EACE;EACA;EACA;;;AAEJ;EACE;EACA;;;AAGF;EACE;EACA;EACA;EACA;;AACA;EACE;EACA;;;AAGF;EACE;;;AAEJ;EACI;EACA;;;AAGF;EACE;;;AAEJ;EACE;;;AAEF;EACE;EACA;;;AAEF;EACE;EACA;EACA;;;AAEF;EACE;EACA;;;AAEF;EACE;;;AC1GF;EACE;;;AAGA;EACE;EACA;EACA;;AAEA;EACE;EACA;;AAGA;EACE;;AACF;EACE;;AAEJ;EACE;EACA;EACA;EACA;EACA;EACA;;AAEA;EACE;;;AAKJ;EACE;;AACA;EACE;EACA;EACA;EACA;;AACF;EACE;EACA;EACA;EACA;EACA;;AACF;EACE;;AACF;EACE;EACA;EACA;EAEA;EACA;EACA;;AAEA;EACE;;AACF;EACE;;AAGN;EACE;;AACF;EACE;;AACA;EACE;EACA;;AAEE;EACE;EACA;;AACF;EACE;EACA;;AAIR;EACE;;AACF;EACE;;AACA;EACE;EACA;;AAEE;EACE;EACA;;AACF;EACE;EACA;;AACF;EACE;EACA;;AAEV;EACE;;AACF;EACE;;AAEE;EACE;;AACF;EACE;;AACN;EACE;;AAEE;EACE;;;AAMN;EACE;;AAEA;EACE;EACA;EACA;EACA;;AAEF;EACE;;AAEA;EACE;EACA;;AAEJ;EACE;EACA;;AAIA;EACE;EACA;;AAEF;EACE;;AAEF;EACE;;;AAIF;EACE;EACA;;AAEF;EACE;;AAEF;EACE;;;AAGR;EACE;;AAEA;EACE;EACA;;ACrJO;EDwJP;;;ACjKO;EDoKP;;;AAKJ;EACE;EACA;EACA;EACA;EACA;EACA;;AAEA;EACE;EACA;EACA;EACA;EACA;EACA;EACA;EACA;EACA;EACA;EACA;;AAEA;EAEE;EACA;EACA;EACA;EACA;;AAEF;EACE;EACA;EACA;;AAEF;EACE;;;AAEN;EAWE;EAGA;EACA,eAvPkB;;AAyPlB;EACE;EACA;;ACxNO;EDqOP;EACA,MAFW;EAGX;;;AChPO;EDoPP;EACA,OAFW;EAGX;;;AAGA;EACE;;AAEA;EACE;;AAGJ;EACE;;AACF;EACE;;AACF;EACE;;AAGJ;EACE;EACA;;AAEA;EAGE;EACA,WAzSa;EA4Sb;EACA;EACA;;AAEA;EACE;;AAEF;EACE;EACA;EACA;EACA;;AACA;EACE;;AAEN;EACE;EACA;EACA;EACA;;AAEJ;EAEE;EACA;;;AAEJ;EAEE;EACA;;;AAEF;EAGE;EAKA;EACA;EACA;EACA;EAGA;EACA;EACA;EAKA;;AAHA;EACE;;;AAKJ;EAGE;;ACpUS;ED5BP;EACA;;;ACkBO;EDfP;EACA;;;ACuBO;EDuUP;;AAEA;EACE;;;ACnVK;EDsVP;;AAEA;EACE;;;AAON;EAIE;EAEA;EACA;EACA;EACA,QApYmC;EAqYnC;;ACjWS;EDqWP;;;AC9WO;EDiXP;;;AAEJ;EAGE;EAEA;EACA;EACA;EACA,QAvZgC;EAwZhC;;ACnXS;EDuXP;;;AChYO;EDmYP;;;AAKF;EAIE;EACA;;ACpYO;ED5BP;EACA;;;ACkBO;EDfP;EACA;;;AA6ZA;EACE,eA3a+B;;;AAibjC;EACE;;AAEE;EACE;;;AE/ZN;EACE;EACA;EACA;EACA;;AACA;EACE;EACA;EACA;EACA;EACA;EACA;EACA;EACA;EACA;EACA;;AACA;EACE;EACA;EACA;EACA;EACA;EACA;EACA;EACA;EACA;EACA;EApCR;EACA;EACA;EACA;EACA;EACA;EACA;EAlBA;EACA;EACA;EACA;EACA;EACA;EACA;EACA;EACA;EACA;;AA0CM;EACE;EACA;EACA;EACA;EACA;EA5CR;EACA;EACA;EACA;EACA;EACA;EACA;EAlBA;EACA;EACA;EACA;EACA;EACA;EACA;EACA;EACA;EACA;;AAkDE;EACE;EACA;EACA;EACA;EACA;EACA;;AACF;EACE;EACA;EACA;EACA;EACA;;AACA;EACE;EACA;;AACF;EACE;EACA;;AACF;EACE;EACA;;AAGE;EACE;;AAEF;EACE;;AAEV;EACE;;AAEA;EACE;;;AC9FN;EACE;;;AAEF;EACE;EACA;EACA;EACA;EACA;;AAII;EACE;EACA;;AAEJ;EACE;EACA;;AFmBK;EEhBP;;AAEA;EACE;;;AFIK;EEDP;;AAEA;EACE;;;AAGN;EACE;;AACA;EACE;;AACF;EACE;EACA;EACA;;;AAIA;EACE;;AACA;EACE;EACA;;AACF;EACE;;AACA;EACE;;AACJ;EACE;;;AAER;EACE;;;AAEF;EACE;;;AAEF;EACE;;;AAEF;AAGI;EACE;;AACF;EACE;;;AAEN;EACE;EACA;EACA;;;AAIA;EACE;;AACF;EACE;;;AAEJ;EACE;;AACA;EACE;;;AAEJ;EACE;EACA;;;AAGF;EACE;;;AAGF;EACE;;;AAEF;EACE;;AAEA;EACE;;AAEF;EACE;;;AAGJ;EAKE;;AAEA;EACE;;AAIE;EACE;;AACF;EACE;;AAEJ;EAGE;;AAGJ;EACE,SAtBa;EAuBb;;AAGF;EACE;EACA;;AAGF;EACE;EACA;;AAKE;EACE;;AADF;EACE;;AADF;EACE;;AADF;EACE;;AADF;EACE;;AADF;EACE;;AADF;EACE;;AADF;EACE;;AADF;EACE;;AADF;EACE;;;AAKN;EACE;;AF1HO;EE6HL;;;AFtIK;EEyIL;;;AAEJ;EACE,SAZa;;;AC9JjB;EACE;AACA;EACA;;AAEA;EACE;EACA;;AAEA;EACE;EACA;EACA;EACA;EACA;;AAEF;EACE;EACA;EACA;EACA;;AAEF;EACE;EACA;EACA;EACA;EACA;EACA;EACA;EAEA;EAEA;EAEA;;AAEA;EACE;EAEA;EACA;EACA;;;AAGN;EACE;;;ACxBJ;EACE;;AAEA;EANE;EACA;;AAQF;EAbE;EACA;;AAeF;EAhBE;EACA;;AAkBF;EAnBE;EACA;;AAqBF;EA1BE;EACA,kBANyB;;AAkC3B;EA7BE;EACA,kBAPqB;;AAsCvB;EAhCE;EACA,kBAJoB;;;AAuCtB;EApCE;EACA,kBANyB;;AA4C3B;EAvCE;EACA,kBAPqB;;AAgDvB;EA1CE;EACA,kBAJoB;;;ACNxB;EACE;EACA;EACA;EACA;;;AAEF;EACE;EACA;EACA;EACA;;;AAEF;EACE;EACA","file":"sass.css"}
\ No newline at end of file
+{"version":3,"sourceRoot":"","sources":["../../src/sass/_menu.sass","../../src/sass/_context_menu.sass","../../src/sass/_graph.sass","../../src/sass/_login.sass","../../src/sass/_tree.sass","../../src/sass/abstract/_members.scss","../../src/sass/_code_editor.sass","../../src/sass/_styles.sass","../../src/sass/_range_slider.sass","../../src/sass/_annotation.sass","../../src/sass/_folder_view.sass"],"names":[],"mappings":"AAEA;AAEA;AACA;AACA;AACA;AACA;AAEA;EACE;EACA;EACA;EACA;EAEA;;;AAEF;EACI;EACA;;;AAEJ;EACI;EACA;EACA;EACA;;;AAEJ;EACE;;;AAEF;AACI;EACA;;;AAEJ;AACI;EACA;;;AAGJ;AACA;EACI;;;AAEJ;EACI;EACA;EACA;EACA;;;AAEJ;EACE;EACA;;;AAEF;EACE;;;AAME;EACE;;;AC9DN;EACE;EACA;EACA;EACA;EACA;;;AAEF;EACE;;;AAEF;EACE;EACA;EACA;EACA;EACA;EACA;EACA;;;AAEF;EACE;EACA;EACA;;;AAEF;EACE;;;AClBF;EACE;EACA;EACA;;;AAEF;AAkCE;AACA;AACA;AACA;AACA;AACA;AACA;AACA;;AAxCA;EAZA;EACA;EAEA;EAWE;EACA;EACA;EACA;;AAEA;EACE;EACA;;AAEF;EACE;EACA;;AAGA;EACE;EACA;;AACN;EACE;;AACF;EACE;;AAEF;EApCA;EACA;EAEA;EAmCE;EACA;;AACF;EACE;;AACF;EACE;;AAWF;EAEE;EAEA;EACA;EACA;EAEA;EACA;EACA;;AAEA;EACE;;AAEJ;EACE;;AAEA;EACE;;AAEJ;EACE;EACA;;;AAGF;EACE;EACA;EACA;EACA;EACA;;;ACjFJ;EACE;;AACA;EACE;EACA;;;AAEJ;EACE;;;AAEF;EACE;;;AAEF;EACE;;;AAGF;EACE;;AAEE;EACE;EACA;;AACA;EACE;;;AAIJ;EACE;EACA;EACA;EACA;;;AAKJ;EACE;EACA;EACA;;;AAEJ;EACE;EACA;EACA;EACA;EACA;;AAGE;EACE;;;AAEN;EACE;EACA;EACA;EACA;EACA;;AAGE;EACE;;;AAEN;EACE;EACA;EACA;EACA;EACA;EACA;EACA;EACA;EACA;;AAEA;EACE;EACA;EACA;;;AAEJ;EACE;EACA;;;AAGF;EACE;EACA;EACA;EACA;;AACA;EACE;EACA;;;AAGF;EACE;;;AAEJ;EACI;EACA;;;AAGF;EACE;;;AAEJ;EACE;;;AAEF;EACE;EACA;;;AAEF;EACE;EACA;EACA;;;AAEF;EACE;EACA;;;AAEF;EACE;;;AC1GF;EACE;;;AAGA;EACE;EACA;EACA;;AAEA;EACE;EACA;;AAGA;EACE;;AACF;EACE;;AAEJ;EACE;EACA;EACA;EACA;EACA;EACA;;AAEA;EACE;;;AAKJ;EACE;;AACA;EACE;EACA;EACA;EACA;;AACF;EACE;EACA;EACA;EACA;EACA;;AACF;EACE;;AACF;EACE;EACA;EACA;EAEA;EACA;EACA;;AAEA;EACE;;AACF;EACE;;AAGN;EACE;;AACF;EACE;;AACA;EACE;EACA;;AAEE;EACE;EACA;;AACF;EACE;EACA;;AAIR;EACE;;AACF;EACE;;AACA;EACE;EACA;;AAEE;EACE;EACA;;AACF;EACE;EACA;;AACF;EACE;EACA;;AAEV;EACE;;AACF;EACE;;AAEE;EACE;;AACF;EACE;;AACN;EACE;;AAEE;EACE;;;AAMN;EACE;;AAEA;EACE;EACA;EACA;EACA;;AAEF;EACE;;AAEA;EACE;EACA;;AAEJ;EACE;EACA;;AAIA;EACE;EACA;;AAEF;EACE;;AAEF;EACE;;;AAIF;EACE;EACA;;AAEF;EACE;;AAEF;EACE;;;AAGR;EACE;;AAEA;EACE;EACA;;ACrJO;EDwJP;;;ACjKO;EDoKP;;;AAKJ;EACE;EACA;EACA;EACA;EACA;EACA;;AAEA;EACE;EACA;EACA;EACA;EACA;EACA;EACA;EACA;EACA;EACA;EACA;;AAEA;EAEE;EACA;EACA;EACA;EACA;;AAEF;EACE;EACA;EACA;;AAEF;EACE;;;AAEN;EAWE;EAGA;EACA,eAvPkB;;AAyPlB;EACE;EACA;;ACxNO;EDqOP;EACA,MAFW;EAGX;;;AChPO;EDoPP;EACA,OAFW;EAGX;;;AAGA;EACE;;AAEA;EACE;;AAGJ;EACE;;AACF;EACE;;AACF;EACE;;AAGJ;EACE;EACA;;AAEA;EAGE;EACA,WAzSa;EA4Sb;EACA;EACA;;AAEA;EACE;;AAEF;EACE;EACA;EACA;EACA;;AACA;EACE;;AAEN;EACE;EACA;EACA;EACA;;AAEJ;EAEE;EACA;;;AAEJ;EAEE;EACA;;;AAEF;EAGE;EAKA;EACA;EACA;EACA;EAGA;EACA;EACA;EAKA;;AAHA;EACE;;;AAKJ;EAGE;;ACpUS;ED5BP;EACA;;;ACkBO;EDfP;EACA;;;ACuBO;EDuUP;;AAEA;EACE;;;ACnVK;EDsVP;;AAEA;EACE;;;AAON;EAIE;EAEA;EACA;EACA;EACA,QApYmC;EAqYnC;;ACjWS;EDqWP;;;AC9WO;EDiXP;;;AAEJ;EAGE;EAEA;EACA;EACA;EACA,QAvZgC;EAwZhC;;ACnXS;EDuXP;;;AChYO;EDmYP;;;AAKF;EAIE;EACA;;ACpYO;ED5BP;EACA;;;ACkBO;EDfP;EACA;;;AA6ZA;EACE,eA3a+B;;;AAibjC;EACE;;AAEE;EACE;;;AE/ZN;EACE;EACA;EACA;EACA;;AACA;EACE;EACA;EACA;EACA;EACA;EACA;EACA;EACA;EACA;EACA;;AACA;EACE;EACA;EACA;EACA;EACA;EACA;EACA;EACA;EACA;EACA;EApCR;EACA;EACA;EACA;EACA;EACA;EACA;EAlBA;EACA;EACA;EACA;EACA;EACA;EACA;EACA;EACA;EACA;;AA0CM;EACE;EACA;EACA;EACA;EACA;EA5CR;EACA;EACA;EACA;EACA;EACA;EACA;EAlBA;EACA;EACA;EACA;EACA;EACA;EACA;EACA;EACA;EACA;;AAkDE;EACE;EACA;EACA;EACA;EACA;EACA;;AACF;EACE;EACA;EACA;EACA;EACA;;AACA;EACE;EACA;;AACF;EACE;EACA;;AACF;EACE;EACA;;AAGE;EACE;;AAEF;EACE;;AAEV;EACE;;AAEA;EACE;;;AC9FN;EACE;;;AAEF;EACE;EACA;EACA;EACA;EACA;;AAII;EACE;EACA;;AAEJ;EACE;EACA;;AFmBK;EEhBP;;AAEA;EACE;;;AFIK;EEDP;;AAEA;EACE;;;AAGN;EACE;;AACA;EACE;;AACF;EACE;EACA;EACA;;;AAIA;EACE;;AACA;EACE;EACA;;AACF;EACE;;AACA;EACE;;AACJ;EACE;;;AAER;EACE;;;AAEF;EACE;;;AAEF;EACE;;;AAEF;AAGI;EACE;;AACF;EACE;;;AAEN;EACE;EACA;EACA;;;AAIA;EACE;;AACF;EACE;;;AAEJ;EACE;;AACA;EACE;;;AAEJ;EACE;EACA;;;AAGF;EACE;;;AAGF;EACE;;;AAEF;EACE;;AAEA;EACE;;AAEF;EACE;;;AAGJ;EAKE;;AAEA;EACE;;AAIE;EACE;;AACF;EACE;;AAEJ;EAGE;;AAGJ;EACE,SAtBa;EAuBb;;AAGF;EACE;EACA;;AAGF;EACE;EACA;;AAKE;EACE;;AADF;EACE;;AADF;EACE;;AADF;EACE;;AADF;EACE;;AADF;EACE;;AADF;EACE;;AADF;EACE;;AADF;EACE;;AADF;EACE;;;AAKN;EACE;;AF1HO;EE6HL;;;AFtIK;EEyIL;;;AAEJ;EACE,SAZa;;;AAcjB;EAKE;;AAEA;EACE;EACA,OARa;EASb,QATa;EAUb,MAToB;EAUpB,KATmB;;;AC/KvB;EACE;AACA;EACA;;AAEA;EACE;EACA;;AAEA;EACE;EACA;EACA;EACA;EACA;;AAEF;EACE;EACA;EACA;EACA;;AAEF;EACE;EACA;EACA;EACA;EACA;EACA;EACA;EAEA;EAEA;EAEA;;AAEA;EACE;EAEA;EACA;EACA;;;AAGN;EACE;;;ACxBJ;EACE;;AAEA;EANE;EACA;;AAQF;EAbE;EACA;;AAeF;EAhBE;EACA;;AAkBF;EAnBE;EACA;;AAqBF;EA1BE;EACA,kBANyB;;AAkC3B;EA7BE;EACA,kBAPqB;;AAsCvB;EAhCE;EACA,kBAJoB;;;AAuCtB;EApCE;EACA,kBANyB;;AA4C3B;EAvCE;EACA,kBAPqB;;AAgDvB;EA1CE;EACA,kBAJoB;;;ACNxB;EACE;EACA;EACA;EACA;;;AAEF;EACE;EACA;EACA;EACA;;;AAEF;EACE;EACA","file":"sass.css"}
\ No newline at end of file
diff --git a/src/Gargantext/Components/Forest/Tree/Node/Action/Upload.purs b/src/Gargantext/Components/Forest/Tree/Node/Action/Upload.purs
index efa6fa4baf50bc0b89ccb4a7777981c17dbf35b8..0d6b9679cac559e80f7572c2b5af785ed2e7f903 100644
--- a/src/Gargantext/Components/Forest/Tree/Node/Action/Upload.purs
+++ b/src/Gargantext/Components/Forest/Tree/Node/Action/Upload.purs
@@ -4,8 +4,9 @@ import Gargantext.Prelude
 
 import Data.Either (Either, fromRight')
 import Data.Eq.Generic (genericEq)
+import Data.Foldable (intercalate)
 import Data.Generic.Rep (class Generic)
-import Data.Maybe (Maybe(..), fromJust, fromMaybe)
+import Data.Maybe (Maybe(..), fromJust, fromMaybe, isNothing)
 import Data.Newtype (class Newtype)
 import Data.String.Regex as DSR
 import Data.String.Regex.Flags as DSRF
@@ -24,8 +25,8 @@ import Gargantext.Components.ListSelection.Types (Selection(..))
 import Gargantext.Components.ListSelection.Types as ListSelection
 import Gargantext.Config.REST (RESTError)
 import Gargantext.Routes as GR
-import Gargantext.Types (ID, NodeType(..))
 import Gargantext.Sessions (Session, postWwwUrlencoded, post)
+import Gargantext.Types (ID, NodeType(..))
 import Gargantext.Types as GT
 import Gargantext.Utils.Reactix as R2
 import Partial.Unsafe (unsafePartial, unsafeCrashWith)
@@ -87,7 +88,7 @@ type UploadFile =
   { blob :: UploadFileBlob
   , name :: String
   }
-  
+
 
 uploadFileView :: R2.Leaf Props
 uploadFileView props = R.createElement uploadFileViewCpt props []
@@ -186,20 +187,45 @@ uploadButtonCpt = here.component "uploadButton" cpt
       fileType' <- T.useLive T.unequal fileType
       mFile' <- T.useLive T.unequal mFile
       selection' <- T.useLive T.unequal selection
+      onPending /\ onPendingBox <- R2.useBox' false
+
+      let disabled = isNothing mFile' || onPending
+
+      pure $
+
+        H.div
+        { className: "action-upload-button" }
+        [
+          if onPending
+          then H.div
+               { className: intercalate " "
+                 [ "spinner-grow"
+                 , "action-upload-button__spinner"
+                 ]
+               }
+               []
+          else mempty
+        ,
+          H.button
+          { className: "btn btn-primary"
+          , "type" : "button"
+          , disabled
+          , style    : { width: "100%" }
+          , on: { click: onClick
+                          fileType'
+                          mFile'
+                          selection'
+                          onPendingBox
+                }
+          }
+          [ H.text "Upload" ]
+        ]
 
-      let disabled = case mFile' of
-            Nothing -> "1"
-            Just _  -> ""
 
-      pure $ H.button { className: "btn btn-primary"
-                      , "type" : "button"
-                      , disabled
-                      , style    : { width: "100%" }
-                      , on: { click: onClick fileType' mFile' selection' }
-                      } [ H.text "Upload" ]
       where
-        onClick fileType' mFile' selection' e = do
+        onClick fileType' mFile' selection' onPendingBox e = do
           let { blob, name } = unsafePartial $ fromJust mFile'
+          T.write_ true onPendingBox
           here.log2 "[uploadButton] fileType" fileType'
           void $ launchAff do
             case fileType' of
@@ -212,6 +238,7 @@ uploadButtonCpt = here.component "uploadButton" cpt
               T.write_ Nothing mFile
               T.write_ CSV fileType
               T.write_ EN lang
+              T.write_ false onPendingBox
             dispatch ClosePopover
 
 -- START File Type View
@@ -406,7 +433,7 @@ uploadTermListViewCpt = here.component "uploadTermListView" cpt
                           }
 
       let opt fileType = H.option { value: show fileType } [ H.text $ show fileType ]
-      
+
       let uploadTypeHtml = R2.select { className: "form-control"
                                      , defaultValue: show defaultUploadType
                                      , on: { change: onUploadTypeChange uploadType } } (opt <$> [ CSV, JSON ])
@@ -505,7 +532,7 @@ uploadFrameCalcViewCpt = here.component "uploadFrameCalcView" cpt
                               , on: { click: onClick } }
                      [ H.text "Upload!" ]
                    ]
-      
+
       pure $ panel bodies footer
 
       where
diff --git a/src/sass/_styles.sass b/src/sass/_styles.sass
index 2a77ba859cb26d0b2976188e0cf635ddc05e0830..1dfc304b13b7558a94b37a2b1bf5e25f648a0d40 100644
--- a/src/sass/_styles.sass
+++ b/src/sass/_styles.sass
@@ -169,3 +169,17 @@ select.form-control
 
   &__body
     padding: $tile-padding
+
+.action-upload-button
+  $spinner-size: 23px // @TODO use futur bootstrap button deferred status here
+  $spinner-left-offset: -32px
+  $spinner-top-offset: 6px
+
+  position: relative
+
+  &__spinner
+    position: absolute
+    width: $spinner-size
+    height: $spinner-size
+    left: $spinner-left-offset
+    top: $spinner-top-offset