diff --git a/apps/edr-freight-api/src/modules/billing/documents/pdf-render.service.ts b/apps/edr-freight-api/src/modules/billing/documents/pdf-render.service.ts
index 21676c160..3767637a7 100644
--- a/apps/edr-freight-api/src/modules/billing/documents/pdf-render.service.ts
+++ b/apps/edr-freight-api/src/modules/billing/documents/pdf-render.service.ts
@@ -84,7 +84,13 @@ export class PdfRenderService {
         const page = await browser.newPage();
         const thermal = opts.thermal ?? false;
         const viewportWidth = thermal ? Math.round((THERMAL_PAGE_WIDTH_MM / 25.4) * 96) : 794;
-        await page.setViewport({ width: viewportWidth, height: 1123, deviceScaleFactor: 1 });
+        // Thermal viewport height is deliberately tiny (not a real page height at all): scrollHeight
+        // is defined as the LARGER of the content's height and the viewport's own height, so a
+        // receipt shorter than the viewport would otherwise report the viewport height back, not
+        // its true content height — a real page-length trailing blank space bug, not theoretical
+        // (confirmed by actually rendering one). A short viewport forces content to overflow it,
+        // so scrollHeight always reflects the content, never the viewport.
+        await page.setViewport({ width: viewportWidth, height: thermal ? 100 : 1123, deviceScaleFactor: 1 });
         await page.setContent(preparedHtml, { waitUntil: "load", timeout: 60_000 });
         await page.emulateMediaType("print");
         await new Promise((resolve) => setTimeout(resolve, 250));
@@ -154,7 +160,7 @@ export class PdfRenderService {
     // browser context regardless, same as the closure form would be.
     const scrollPx = (await page.evaluate("document.documentElement.scrollHeight")) as number;
     const contentMm = (scrollPx / 96) * 25.4 + THERMAL_MARGIN_MM * 2 + THERMAL_FEED_MM;
-    return Math.min(THERMAL_MAX_HEIGHT_MM, contentMm);
+    return Math.min(THERMAL_MAX_HEIGHT_MM, Math.round(contentMm * 100) / 100);
   }
 
   private injectPdfPrintStyles(html: string): string {