How to normalise mixed page sizes in a pdf to a single size
- Step 1Identify the target page size — Choose the size that most pages already use (usually A4 or Letter) as the normalisation target.
- Step 2Upload the mixed-size PDF — Drop the document into the resize tool.
- Step 3Select the target size and apply to all pages — Choose the target size and confirm that all pages are processed.
- Step 4Download the uniform document — Save the normalised PDF.
Frequently asked questions
Will larger pages (e.g., A3) be scaled down to A4?+
Yes — all pages are scaled to the target size. A3 content scaled to A4 will be 50% of its original size.
What if I want to keep A3 pages but standardise the rest?+
Use the resize tool on a page range that excludes the A3 pages, leaving those at their original size.
Is content ever lost during normalisation?+
No content is lost — scaling ensures all content fits within the new page boundaries, with white padding added if needed to maintain aspect ratio.
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.