Resizing a PDF to A4 is useful when pages are slightly larger from scanning, non-standard paper, or different application exports.
Go to pdfeditor.onl/crop-pdf and upload your PDF. Set margin values to reduce the page to A4 dimensions (210×297mm). Apply to all pages and download.
Open the PDF in Chrome. Press Ctrl+P. Set Paper Size to A4. Choose Fit to Page. Select Save as PDF as the printer. This re-renders content at exactly A4 dimensions.
Tip: Use "Fit to page" if you want content to scale to fill A4. Use "Shrink oversized pages" if you only want to bring larger-than-A4 pages down to A4.
A4 at 96 DPI: 794×1123px. At 150 DPI: 1240×1754px. At 300 DPI: 2480×3508px.
No. A4 is 210×297mm. US Letter is 216×279mm — slightly shorter and wider than A4.
Yes — both methods are completely free.