diff --git a/app/lish/[did]/[publication]/[rkey]/PostContent.tsx b/app/lish/[did]/[publication]/[rkey]/PostContent.tsx
index 9c794300..58096e70 100644
--- a/app/lish/[did]/[publication]/[rkey]/PostContent.tsx
+++ b/app/lish/[did]/[publication]/[rkey]/PostContent.tsx
@@ -346,7 +346,7 @@ export let Block = ({
     case PubLeafletBlocksText.isMain(b.block):
       return (
         <p
-          className={`textBlock ${className} ${b.block.textSize === "small" ? "text-sm text-secondary" : ""}`}
+          className={`textBlock ${className} ${b.block.textSize === "small" ? "text-sm text-secondary" : b.block.textSize === "large" ? "text-lg" : ""}`}
           {...blockProps}
         >
           <TextBlock
diff --git a/components/Blocks/TextBlock/index.tsx b/components/Blocks/TextBlock/index.tsx
index 2000866d..f774469b 100644
--- a/components/Blocks/TextBlock/index.tsx
+++ b/components/Blocks/TextBlock/index.tsx
@@ -129,7 +129,12 @@ export function RenderedTextBlock(props: {
     center: "text-center",
     justify: "text-justify",
   }[alignment];
-  let textStyle = textSize?.data.value === "small" ? "text-sm" : "";
+  let textStyle =
+    textSize?.data.value === "small"
+      ? "text-sm"
+      : textSize?.data.value === "large"
+        ? "text-lg"
+        : "";
   let { permissions } = useEntitySetContext();
 
   let content = <br />;
@@ -190,7 +195,9 @@ export function BaseTextBlock(props: BlockProps & { className?: string }) {
   let textStyle =
     textSize?.data.value === "small"
       ? "text-sm text-secondary"
-      : "text-base text-primary";
+      : textSize?.data.value === "large"
+        ? "text-lg text-primary"
+        : "text-base text-primary";
 
   let editorState = useEditorStates(
     (s) => s.editorStates[props.entityID],
diff --git a/components/Toolbar/TextBlockTypeToolbar.tsx b/components/Toolbar/TextBlockTypeToolbar.tsx
index 931edc6a..8883f56a 100644
--- a/components/Toolbar/TextBlockTypeToolbar.tsx
+++ b/components/Toolbar/TextBlockTypeToolbar.tsx
@@ -145,12 +145,42 @@ export const TextBlockTypeToolbar = (props: {
           }
         }}
         active={
-          blockType?.data.value === "text" && textSize?.data.value !== "small"
+          blockType?.data.value === "text" &&
+          textSize?.data.value !== "small" &&
+          textSize?.data.value !== "large"
         }
         tooltipContent={<div>Normal Text</div>}
       >
         Text
       </ToolbarButton>
+      <ToolbarButton
+        className={`px-[6px] text-lg ${props.className}`}
+        onClick={async () => {
+          if (!focusedBlock || !blockType) return;
+          if (blockType.data.value !== "text") {
+            // Convert to text block first if it's a heading
+            if (headingLevel)
+              await rep?.mutate.retractFact({ factID: headingLevel.id });
+            await rep?.mutate.assertFact({
+              entity: focusedBlock.entityID,
+              attribute: "block/type",
+              data: { type: "block-type-union", value: "text" },
+            });
+          }
+          // Set text size to large
+          await rep?.mutate.assertFact({
+            entity: focusedBlock.entityID,
+            attribute: "block/text-size",
+            data: { type: "text-size-union", value: "large" },
+          });
+        }}
+        active={
+          blockType?.data.value === "text" && textSize?.data.value === "large"
+        }
+        tooltipContent={<div>Large Text</div>}
+      >
+        <div className="leading-[1.625rem]">Large</div>
+      </ToolbarButton>
       <ToolbarButton
         className={`px-[6px] text-sm text-secondary ${props.className}`}
         onClick={async () => {
@@ -177,7 +207,7 @@ export const TextBlockTypeToolbar = (props: {
         }
         tooltipContent={<div>Small Text</div>}
       >
-        Small
+        <div className="leading-[1.625rem]">Small</div>
       </ToolbarButton>
     </>
   );
diff --git a/lexicons/src/blocks.ts b/lexicons/src/blocks.ts
index 96c8ad99..dd3ff4ec 100644
--- a/lexicons/src/blocks.ts
+++ b/lexicons/src/blocks.ts
@@ -10,7 +10,7 @@ export const PubLeafletBlocksText: LexiconDoc = {
       required: ["plaintext"],
       properties: {
         plaintext: { type: "string" },
-        textSize: { type: "string", enum: ["default", "small"] },
+        textSize: { type: "string", enum: ["default", "small", "large"] },
         facets: {
           type: "array",
           items: { type: "ref", ref: PubLeafletRichTextFacet.id },
diff --git a/src/replicache/attributes.ts b/src/replicache/attributes.ts
index dc0425ee..4f00e8e9 100644
--- a/src/replicache/attributes.ts
+++ b/src/replicache/attributes.ts
@@ -328,7 +328,7 @@ export type Data<A extends keyof typeof Attributes> = {
   };
   "text-size-union": {
     type: "text-size-union";
-    value: "default" | "small";
+    value: "default" | "small" | "large";
   };
   "page-type-union": { type: "page-type-union"; value: "doc" | "canvas" };
   "block-type-union": {