diff --git a/apps/pay/src/receipt.ts b/apps/pay/src/receipt.ts
index 0d7ac3f..ee1defe 100644
--- a/apps/pay/src/receipt.ts
+++ b/apps/pay/src/receipt.ts
@@ -123,7 +123,8 @@ export async function generateReceipt(paymentId: number): Promise<string> {
 </body>
 </html>`;
 
-  // Lock it
-  await sql`UPDATE payments SET receipt_html = ${html} WHERE id = ${paymentId}`;
-  return html;
+  // Minify and lock it
+  const minified = html.replace(/\n\s*/g, "").replace(/>\s+</g, "><").replace(/\s{2,}/g, " ");
+  await sql`UPDATE payments SET receipt_html = ${minified} WHERE id = ${paymentId}`;
+  return minified;
 }