Resize PDF pages to standard dimensions like A4, US Letter, or Legal instantly.
Upload the PDF document you want to resize.
Select the target page size (e.g., A4 or US Letter).
Choose whether to fit the content proportionally or fill the page.
Click Convert to generate the newly sized PDF.
No. The conversion scales the internal vector content, preserving the original quality of text and graphics.
A PDF page size converter changes the dimensions of the pages in a PDF document to match a specified standard paper size — such as A4, Letter, A3, Legal, or A5. This does not change the content of the document; it rescales and repositions the content to fit the new page dimensions correctly.
PDF documents are created with specific page dimensions encoded in the file. A document created on a US letter-size page (8.5 × 11 inches) will print with white margins or cut-off edges when fed through a European A4 printer (210 × 297 mm) without adjustment. Converting the page size in advance eliminates these printing and layout problems.
Two main paper size standards dominate the world:
Receiving a Letter-sized PDF when your printer is loaded with A4 paper (or vice versa) frequently causes scaling issues. Converting the page size beforehand ensures perfect print output.
Academic journals, government forms, and corporate style guides often require documents to be in a specific page size. A research paper submitted to a European journal, for example, often must be in A4.
Print shops and book printers operate with standardized page sizes. Converting your PDF to exactly the right size before submission prevents expensive reprints.
If you are merging PDFs from different sources, mixed page sizes can cause inconsistent printing or viewing. Normalizing all pages to a single size creates a cleaner, more professional merged document.
Convert to A4, A3, A5, Letter, Legal, Tabloid, and other common paper sizes.
Choose whether to scale page content to fill the new size, center the content with white space margins, or crop to the new size.
The entire conversion runs inside your browser. Your documents are never uploaded to any server.
The tool processes all pages in the PDF simultaneously. A 100-page report can be resized in seconds.
No account, no limits, no cost.
| Size | Dimensions (mm) | Dimensions (inches) | Common Use |
|---|---|---|---|
| A3 | 297 × 420 | 11.7 × 16.5 | Posters, large drawings |
| A4 | 210 × 297 | 8.3 × 11.7 | Standard office (most of world) |
| A5 | 148 × 210 | 5.8 × 8.3 | Booklets, flyers |
| Letter | 216 × 279 | 8.5 × 11 | Standard US office |
| Legal | 216 × 356 | 8.5 × 14 | US legal documents |
| Tabloid | 279 × 432 | 11 × 17 | Newspapers, large prints |
When you receive a PDF that does not match your printer's loaded paper size, a quick conversion saves paper and frustration.
Students and researchers converting their work between Letter (written in the US) and A4 (required by a European journal or institution).
IT teams or document managers standardizing incoming PDFs from multiple departments or external suppliers into a single page format for archiving.
Will converting the page size affect the text or image quality? If content is scaled up, very large scale factors may reduce perceived sharpness of rasterized images. Vector-based content (text, diagrams) scales perfectly without quality loss.
Can I convert just selected pages rather than the whole document? Currently the tool applies the page size to all pages. Use PDF Page Extractor to split out specific pages first.
Does it change file size significantly? Resizing itself has minimal effect on file size. Scaling content up slightly may increase it; scaling down may reduce it.
Is password-protected PDFs supported? Remove the password first using Remove PDF Password, then resize.
Your data never leaves this device. All processing is handled locally by JavaScript.
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