How to resize pdf pages to standard a4 size
- Step 1Upload the PDF with non-A4 pages — Drop the document into the resize tool.
- Step 2Select A4 as the target size — Choose A4 (210 × 297 mm) from the page size presets.
- Step 3Choose scale or pad mode — Scale scales content to fit A4; pad adds white borders to fill the size without scaling.
- Step 4Download the A4 PDF — Save and print.
Frequently asked questions
Will scaling distort the content?+
Scaling preserves the aspect ratio — content will be proportionally enlarged or reduced to fit A4 width, with white space added at the top and bottom if needed.
My PDF is A4 portrait but some pages are A4 landscape — will this fix them?+
Resize standardises dimensions. For orientation issues, use the Rotate tool first, then resize.
Will this work for PDFs destined for a print shop?+
Yes — professional printers expect consistent page sizes. Note that bleed and trim marks may be affected by scaling.
Privacy first
All PDF processing runs locally in your browser using PDF-lib and pdf.js. No file is ever uploaded — only metadata counters are saved for signed-in dashboard stats.