diff --git a/themes/a291d86f-b913-4b80-9249-67390b4958ee/chrome.css b/themes/a291d86f-b913-4b80-9249-67390b4958ee/chrome.css
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+++ b/themes/a291d86f-b913-4b80-9249-67390b4958ee/chrome.css
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+
+/* Space Icon Boost */
+
+:root {
+  --space-icon-boost-icon-size: var(--mod-space_icon_boost-icon_size, 22px);
+  --space-icon-boost-hit-area: var(--mod-space_icon_boost-hit_area, 31px);
+  --space-icon-boost-gap: var(--mod-space_icon_boost-gap, 4px);
+  --space-icon-boost-radius: var(--mod-space_icon_boost-radius, 8px);
+}
+
+#zen-workspaces-button {
+  gap: var(--space-icon-boost-gap) !important;
+  align-items: center !important;
+  justify-content: center !important;
+  padding-block: 4px !important;
+  padding-inline: 0 !important;
+}
+
+#zen-workspaces-button > toolbarbutton,
+#zen-workspaces-button > .subviewbutton,
+#zen-workspaces-button toolbarbutton.subviewbutton {
+  min-inline-size: var(--space-icon-boost-hit-area) !important;
+  inline-size: var(--space-icon-boost-hit-area) !important;
+  min-block-size: var(--space-icon-boost-hit-area) !important;
+  block-size: var(--space-icon-boost-hit-area) !important;
+  padding: 0 !important;
+  margin: 0 !important;
+  border-radius: var(--space-icon-boost-radius) !important;
+  display: inline-flex !important;
+  align-items: center !important;
+  justify-content: center !important;
+  box-sizing: border-box !important;
+}
+
+#zen-workspaces-button > toolbarbutton > .toolbarbutton-badge-stack,
+#zen-workspaces-button > .subviewbutton > .toolbarbutton-badge-stack,
+#zen-workspaces-button > toolbarbutton > .toolbarbutton-icon,
+#zen-workspaces-button > .subviewbutton > .toolbarbutton-icon {
+  min-inline-size: var(--space-icon-boost-hit-area) !important;
+  min-block-size: var(--space-icon-boost-hit-area) !important;
+  display: flex !important;
+  align-items: center !important;
+  justify-content: center !important;
+  padding: 0 !important;
+  margin: 0 !important;
+}
+
+#zen-workspaces-button .zen-workspace-icon,
+#zen-workspaces-button .toolbarbutton-icon,
+#zen-workspaces-button image.toolbarbutton-icon {
+  inline-size: var(--space-icon-boost-icon-size) !important;
+  block-size: var(--space-icon-boost-icon-size) !important;
+  font-size: var(--space-icon-boost-icon-size) !important;
+  line-height: 1 !important;
+  flex: 0 0 auto !important;
+}
diff --git a/themes/a291d86f-b913-4b80-9249-67390b4958ee/image.png b/themes/a291d86f-b913-4b80-9249-67390b4958ee/image.png
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diff --git a/themes/a291d86f-b913-4b80-9249-67390b4958ee/preferences.json b/themes/a291d86f-b913-4b80-9249-67390b4958ee/preferences.json
new file mode 100644
index 00000000..f76d8116
--- /dev/null
+++ b/themes/a291d86f-b913-4b80-9249-67390b4958ee/preferences.json
@@ -0,0 +1,26 @@
+[
+    {
+        "property": "mod.space_icon_boost.icon_size",
+        "label": "Space icon size",
+        "type": "string",
+        "defaultValue": "22px"
+    },
+    {
+        "property": "mod.space_icon_boost.hit_area",
+        "label": "Space button size",
+        "type": "string",
+        "defaultValue": "31px"
+    },
+    {
+        "property": "mod.space_icon_boost.gap",
+        "label": "Space button gap",
+        "type": "string",
+        "defaultValue": "4px"
+    },
+    {
+        "property": "mod.space_icon_boost.radius",
+        "label": "Space button radius",
+        "type": "string",
+        "defaultValue": "8px"
+    }
+]
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diff --git a/themes/a291d86f-b913-4b80-9249-67390b4958ee/readme.md b/themes/a291d86f-b913-4b80-9249-67390b4958ee/readme.md
new file mode 100644
index 00000000..3f6ccdfd
--- /dev/null
+++ b/themes/a291d86f-b913-4b80-9249-67390b4958ee/readme.md
@@ -0,0 +1,25 @@
+
+# Space Icon Boost
+
+`Space Icon Boost` is a small Zen Browser mod that makes the Space icons at the bottom of the sidebar larger and easier to hit.
+
+## What This Mod Changes
+
+- Increases the visible size of Space icons.
+- Keeps each Space button centered and balanced inside its hit area.
+- Preserves a comfortable click target by enlarging the button container, not just the glyph.
+
+## Files
+
+- `chrome.css`: applies the Workspace icon sizing and layout rules.
+- `preferences.json`: exposes Zen mod settings for icon size, button size, spacing, and corner radius.
+- `screenshot.png`: a 600x400 Zen Mod Store screenshot.
+
+## Customization
+
+You can change the defaults from Zen's mod preferences:
+
+- `Space icon size`: default `22px`
+- `Space button size`: default `31px`
+- `Space button gap`: default `4px`
+- `Space button radius`: default `8px`
diff --git a/themes/a291d86f-b913-4b80-9249-67390b4958ee/theme.json b/themes/a291d86f-b913-4b80-9249-67390b4958ee/theme.json
new file mode 100644
index 00000000..a8535f53
--- /dev/null
+++ b/themes/a291d86f-b913-4b80-9249-67390b4958ee/theme.json
@@ -0,0 +1,15 @@
+{
+    "id": "a291d86f-b913-4b80-9249-67390b4958ee",
+    "name": "Space Icon Boost",
+    "description": "Space Icon Boost is a small mod that makes the Space icons at the bottom of the sidebar larger and easier to hit.",
+    "homepage": "https://github.com/sergiubacioiu/zen-mods/",
+    "style": "https://raw.githubusercontent.com/zen-browser/theme-store/main/themes/a291d86f-b913-4b80-9249-67390b4958ee/chrome.css",
+    "readme": "https://raw.githubusercontent.com/zen-browser/theme-store/main/themes/a291d86f-b913-4b80-9249-67390b4958ee/readme.md",
+    "image": "https://raw.githubusercontent.com/zen-browser/theme-store/main/themes/a291d86f-b913-4b80-9249-67390b4958ee/image.png",
+    "author": "sergiubacioiu",
+    "version": "1.0.0",
+    "tags": [],
+    "createdAt": "2026-04-03",
+    "updatedAt": "2026-04-03",
+    "preferences": "https://raw.githubusercontent.com/zen-browser/theme-store/main/themes/a291d86f-b913-4b80-9249-67390b4958ee/preferences.json"
+}
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