diff --git a/ts/smartpdf.classes.smartpdf.ts b/ts/smartpdf.classes.smartpdf.ts
index 404bc28..e10c451 100644
--- a/ts/smartpdf.classes.smartpdf.ts
+++ b/ts/smartpdf.classes.smartpdf.ts
@@ -68,6 +68,10 @@ export class SmartPdf {
     const pdfCandidate = new PdfCandidate(htmlStringArg);
     this._candidates[pdfCandidate.pdfId] = pdfCandidate;
     const page = await this.headlessBrowser.newPage();
+    await page.setViewport({
+      height: 842,
+      width: 595,
+    })
     const response = await page.goto(`http://localhost:3210/${pdfCandidate.pdfId}`, {
       waitUntil: 'networkidle2',
     });