How to Resize PDF Pages: Convert Between A4, Letter & Custom Sizes
Need to convert a US Letter PDF to A4 for European printing? Learn how to change PDF page dimensions to any standard or custom size.
You create a document in the US using Letter size (8.5 × 11 inches). You send it to a colleague in Europe, and they try to print it on A4 paper (210 × 297 mm). The margins are wrong. The content is shifted. Part of the text is cut off at the bottom.
This is one of the most common frustrations in international business. The US and Canada use Letter size. The rest of the world uses A4. And when you try to print one on the other, things break.
Our free Resize PDF Pages tool solves this by letting you change the page dimensions of any PDF to A4, Letter, A3, Legal, or any custom size — in seconds.
Standard Paper Sizes Explained
| Size | Dimensions | Used In |
|---|---|---|
| A4 | 210 × 297 mm (8.27 × 11.69 in) | Europe, Asia, most of the world |
| Letter | 8.5 × 11 in (216 × 279 mm) | US, Canada |
| Legal | 8.5 × 14 in (216 × 356 mm) | US (legal documents) |
| A3 | 297 × 420 mm (11.69 × 16.54 in) | Posters, large prints |
| Tabloid | 11 × 17 in (279 × 432 mm) | US (large format) |
How to Resize Your PDF
- Upload: Navigate to the Resize PDF Pages tool and upload your document(s). Batch upload is supported.
- Choose Size: Select your target page size from the presets (A4, Letter, Legal, A3, etc.) or enter custom dimensions in millimeters or inches.
- Process: Click "Resize PDF." The tool adjusts every page to the new dimensions.
- Download: Save the resized document.
What Happens to the Content?
When you resize a PDF, the tool adjusts the page boundaries and scales the content to fit the new dimensions. This means:
- Text stays readable: Content is proportionally scaled so nothing is cut off.
- Aspect ratio is maintained: Your document will not look stretched or squished.
- Quality is preserved: Vector text and high-resolution images remain sharp.
Common Use Cases
- International Business: Convert US Letter documents to A4 before sending to European offices, or vice versa.
- Print Preparation: Resize a document to match the exact paper size available in your printer.
- Academic Submissions: Many universities require submissions in specific page sizes. Resize your document to comply.
- Poster Printing: Scale an A4 document up to A3 or Tabloid for large-format printing.
- Standardization: If you have PDF Files from different sources with inconsistent page sizes, resize them all to the same dimensions.
Pro Tips
- Check Margins After Resizing: Switching between Letter and A4 can shift margins slightly. Open the result and verify that headers, footers, and page numbers look correct.
- Crop First, Then Resize: If your PDF has excessive margins, use Crop PDF to trim them before resizing to the target page size.
- Batch Processing: Upload multiple files at once to resize an entire set of documents to the same page size.
Secure & Private
Your files are processed securely and automatically deleted from our servers within one hour. We never access or share your documents.
Stop fighting with mismatched page sizes. Resize your PDF Files and print perfectly every time.
Ready to try it yourself?
Use our free Resize PDF Pages tool to handle your documents now.