PDF Paper Size Converter – Resize Pages to A4, Letter or Legal
1. Choose a PDF
2. Choose the new page size
3. Choose how pages fit
4. Review and download
Choose a PDF or use the example, then select A4, Letter, Legal or a custom paper size.
The dashed line shows the selected safety margin. Fit mode shows the entire source page; Fill mode clips overflow at the paper edge.
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How to resize PDF pages to A4, Letter or Legal
Fit versus Fill
The converter scales proportionally, so circles stay circular and text is not stretched. Fit uses the smaller of the horizontal and vertical scale factors: scale = min(available width ÷ source width, available height ÷ source height). It keeps the complete source page and centres it, which can leave white space. Fill uses the larger factor: scale = max(...). It covers the available paper area but clips equal overflow from opposite edges.
Standard paper dimensions
| Paper | Dimensions | Common use |
|---|---|---|
| A4 | 210 × 297 mm | General documents in most countries using ISO 216 paper |
| US Letter | 8.5 × 11 in | General office and home documents in the United States and Canada |
| US Legal | 8.5 × 14 in | Long-form legal and administrative documents |
| A3 | 297 × 420 mm | Posters, diagrams and larger layouts |
| A5 | 148 × 210 mm | Booklets, handouts and compact documents |
PDF coordinates use points. This tool converts with 72 points per inch and 25.4 millimetres per inch. ISO sizes use their published millimetre dimensions; small decimal point differences are normal.
What changes in the exported PDF
Each selected source page is placed proportionally onto a new page with the requested dimensions. Text and vector graphics are not intentionally rasterized. Pages outside a selected range are copied at their original size. The new document may have a different file size, and document-level navigation such as bookmarks is not guaranteed to survive.
Frequently asked questions
Does my PDF get uploaded?
No. The selected PDF is read and processed in browser memory. Normal page resources such as analytics and ads may still make network requests, subject to consent choices, but this tool does not include your PDF bytes in those requests.
What is the difference between Fit and Fill?
Fit scales the entire source page into the available area and may add whitespace. Fill covers the entire area but may crop content at two edges when the aspect ratios differ.
What are the exact A4, Letter and Legal dimensions?
A4 is 210 × 297 mm. US Letter is 8.5 × 11 inches. US Legal is 8.5 × 14 inches. Landscape orientation swaps width and height.
Will the resized PDF keep selectable text?
Usually yes. Pages are embedded as PDF content instead of intentionally converted to bitmap images, so ordinary text and vector artwork remain vector PDF content.
Can I resize only some pages?
Yes. Choose Page range and enter values such as 1-3, 6, 9-12. Pages outside the range are copied at their original size.
Does resizing preserve links, forms and comments?
Do not rely on it. Resized pages are embedded as page artwork, so interactive links, form fields, comments, layers and other annotations may be flattened or omitted. Pages outside a selected range are copied without resizing.
Can I use a custom PDF page size?
Yes. Choose Custom, select millimetres or inches, and enter the width and height. Each side must be from 25.4 to 2,000 mm, or the equivalent in inches.
Are password-protected PDFs supported?
No password is requested. If the browser libraries cannot open or modify an encrypted or permission-restricted PDF, use an authorized unlocked copy.
Is there a file-size limit?
The tool accepts one PDF up to 200 MB. The practical page-count limit depends on available browser memory and document complexity.
What should I check before printing the result?
Open the downloaded PDF and inspect every resized page, especially edges in Fill mode. In the print dialog, use Actual size or 100% if the printer should honor the new PDF dimensions.