diff --git a/themes/10f54be0-e52f-405c-81d7-4835aa435b86/chrome.css b/themes/10f54be0-e52f-405c-81d7-4835aa435b86/chrome.css
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+++ b/themes/10f54be0-e52f-405c-81d7-4835aa435b86/chrome.css
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+
+/* TAB TWEAKS */
+
+/* no workspace indicator */
+@media (-moz-bool-pref: "theme.tabbartweaks.hideworkspace"){
+    vbox.zen-workspace-tabs-section.zen-current-workspace-indicator {
+    display: none !important;
+    }
+}
+/* tab-bar size */
+:root[zen-compact-mode="true"] {
+    toolbox#navigator-toolbox.browser-toolbox-background {
+        padding-top: var(--theme-tabbartweaks-tobseparation) !important; /*default 34px*/
+        padding-bottom: var(--theme-tabbartweaks-bottomseparation) !important; /*default 4px*/
+        margin: 0px !important;
+        bottom: 0px !important;
+        top: 0px !important;
+        height: 100% !important;
+    }
+}
+:root[zen-compact-mode="false"] {
+    #TabsToolbar {
+        margin-top: calc(var(--theme-tabbartweaks-tobseparation) - 38px) !important;
+        margin-bottom: var(--theme-tabbartweaks-bottomseparation) !important;
+    }
+}
+/* tabs */
+:root:has(#theme-Tab-Bar-Tweaks[theme-tabbartweaks-tabbehaviour="stretch"]){
+    vbox.zen-workspace-tabs-section.zen-workspace-normal-tabs-section {
+        display: flex !important;
+    }
+}
+:root:has(#theme-Tab-Bar-Tweaks[theme-tabbartweaks-tabbehaviour="gototop"]){
+    vbox.zen-workspace-tabs-section.zen-workspace-normal-tabs-section {
+        display: block !important;
+        align-content: start !important;
+    }
+}
+:root:has(#theme-Tab-Bar-Tweaks[theme-tabbartweaks-tabbehaviour="gototmiddle"]){
+    vbox.zen-workspace-tabs-section.zen-workspace-normal-tabs-section {
+        display: block !important;
+        align-content: center !important;
+    }
+}
+:root:has(#theme-Tab-Bar-Tweaks[theme-tabbartweaks-tabbehaviour="gototbottom"]){
+    vbox.zen-workspace-tabs-section.zen-workspace-normal-tabs-section {
+        display: block !important;
+        align-content: end !important;
+    }
+}
+/* tab behaviour */
+tab.tabbrowser-tab {
+    flex-grow: 1 !important;
+}
+vbox.tab-label-container {
+    flex-flow: row !important;
+    display: flex !important;
+}
+label.tab-text.tab-label {
+        flex-grow: 1 !important;
+        text-align: left !important;
+    }
+@media (-moz-bool-pref: "theme.tabbartweaks.centernames") {
+    label.tab-text.tab-label {
+        flex-grow: 1 !important;
+        text-align: center !important;
+    }
+}
+label.tab-text.tab-label {
+    max-width: 100% !important;
+}
+label.tab-reset-pin-label {
+    width: 0px !important;
+}
+
+/* full height close buttons */
+@media (-moz-bool-pref: "theme.tabbartweaks.fullclose"){
+    image.tab-close-button {
+        height: calc(100% - 4px) !important;
+        width: 40px !important;
+        padding: 12px !important;
+        margin-right: -6px !important;
+        border-radius: 8px !important;
+        border-bottom-left-radius: 0px !important;
+        border-top-left-radius: 0px !important;
+        display: block !important;
+    }
+    #tabbrowser-tabs[orient="vertical"] {
+        &[expanded] {
+            & .tabbrowser-tab {
+                &:not(:hover) .tab-close-button:not([selected]) {
+                    opacity: 0 !important;
+                }
+            }
+        }
+    }
+}
diff --git a/themes/10f54be0-e52f-405c-81d7-4835aa435b86/image.png b/themes/10f54be0-e52f-405c-81d7-4835aa435b86/image.png
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diff --git a/themes/10f54be0-e52f-405c-81d7-4835aa435b86/preferences.json b/themes/10f54be0-e52f-405c-81d7-4835aa435b86/preferences.json
new file mode 100644
index 00000000..17c2d126
--- /dev/null
+++ b/themes/10f54be0-e52f-405c-81d7-4835aa435b86/preferences.json
@@ -0,0 +1,57 @@
+[
+    {
+        "property": "theme.tabbartweaks.hideworkspace",
+        "label": "Hide workspace indicator",
+        "type": "checkbox",
+        "defaultValue": false
+    },
+    {
+        "property": "theme.tabbartweaks.centernames",
+        "label": "Center tab names",
+        "type": "checkbox",
+        "defaultValue": false
+    },
+    {
+        "property": "theme.tabbartweaks.fullclose",
+        "label": "Large close tab button",
+        "type": "checkbox",
+        "defaultValue": false
+    },
+    {
+        "property": "theme.tabbartweaks.topseparation",
+        "label": "Top margin",
+        "type": "string",
+        "defaultValue": "34px"
+    },
+    {
+        "property": "theme.tabbartweaks.bottomseparation",
+        "label": "Bottom margin",
+        "type": "string",
+        "defaultValue": "4px"
+    },
+    {
+        "property": "theme.tabbartweaks.tabbehaviour",
+        "label": "Tab behaviour",
+        "type": "dropdown",
+        "placeholder": "Go to top",
+        "defaultValue": "gototop",
+        "options": [
+            {
+                "label": "Go to the top",
+                "value": "gototop"
+            },
+            {
+                "label": "Go to the middle",
+                "value": "gototmiddle"
+            },
+            {
+                "label": "Go to the bottom",
+                "value": "gotobottom"
+            },
+            {
+                "label": "Stretch",
+                "value": "stretch"
+            }
+        ]
+    }
+]
\ No newline at end of file
diff --git a/themes/10f54be0-e52f-405c-81d7-4835aa435b86/readme.md b/themes/10f54be0-e52f-405c-81d7-4835aa435b86/readme.md
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index 00000000..100e5798
--- /dev/null
+++ b/themes/10f54be0-e52f-405c-81d7-4835aa435b86/readme.md
@@ -0,0 +1,11 @@
+
+! This mod works only for "multiple toolbars" browser layout so far !
+
+Customization options:
+- Change distance between the tab bar and the top/bottom edge of the window.
+- Stretch tabs to occupy the full height of the tab bar.
+- Move tabs to the bottom or middle of the tab bar.
+- Center tab names.
+- Expand close tab button to occupy full height of the tab.
+
+You can find these options by going to about:preferences#zenMarketplace and clicking the gear icon under Tab Bar Tweaks.
diff --git a/themes/10f54be0-e52f-405c-81d7-4835aa435b86/theme.json b/themes/10f54be0-e52f-405c-81d7-4835aa435b86/theme.json
new file mode 100644
index 00000000..baa340b2
--- /dev/null
+++ b/themes/10f54be0-e52f-405c-81d7-4835aa435b86/theme.json
@@ -0,0 +1,15 @@
+{
+    "id": "10f54be0-e52f-405c-81d7-4835aa435b86",
+    "name": "Tab Bar Tweaks",
+    "description": "this mod allows for better customization of your tab bar.",
+    "homepage": "https://github.com/Janb0/Zen-Browser-Mods/tree/84b39dedf1c5d1b779d254b0ed1eea5c983783a9/Tab%20Bar%20Tweaks",
+    "style": "https://raw.githubusercontent.com/zen-browser/theme-store/main/themes/10f54be0-e52f-405c-81d7-4835aa435b86/chrome.css",
+    "readme": "https://raw.githubusercontent.com/zen-browser/theme-store/main/themes/10f54be0-e52f-405c-81d7-4835aa435b86/readme.md",
+    "image": "https://raw.githubusercontent.com/zen-browser/theme-store/main/themes/10f54be0-e52f-405c-81d7-4835aa435b86/image.png",
+    "author": "Janb0",
+    "version": "1.0.0",
+    "tags": [],
+    "createdAt": "2025-05-29",
+    "updatedAt": "2025-05-29",
+    "preferences": "https://raw.githubusercontent.com/zen-browser/theme-store/main/themes/10f54be0-e52f-405c-81d7-4835aa435b86/preferences.json"
+}
\ No newline at end of file