# Resize PDF Pages - Convert a PDF to A4 or Another Paper Size Online

> Free online PDF page resizer: put mixed-size pages onto one paper size — A4, A3, Letter or custom — scaled proportionally and centred, with optional margins.

- URL: https://qilingtools.com/en/pdf/resize
- Category: PDF Tools (https://qilingtools.com/en/pdf)
- Tags: [PDF](https://qilingtools.com/en/tags/pdf), [Documents](https://qilingtools.com/en/tags/document), [Printing](https://qilingtools.com/en/tags/print)
- Last updated: 2026-10-26
- Price: Free, no sign-up
- Privacy: Runs locally in the browser; files are never uploaded

Put every page of a PDF onto the same paper size. Scans, printed web pages and documents stitched together from several sources often have pages of different sizes, which makes printing shrink and stretch unpredictably. This tool scales each page proportionally and centres it on the sheet you choose — A4, A3, A5, Letter, Legal or a custom size in millimetres — and can leave a margin for binding. With Automatic orientation, landscape pages land on landscape sheets instead of being forced upright. Content is embedded as vectors rather than rasterised, so text stays sharp and selectable. Everything runs locally and files are never uploaded.

## How to use

1. Upload a PDF file
2. Choose the target paper and orientation, and set a margin if you need one
3. Click Resize & download to get the uniform PDF

## Features

- A4 / A3 / A5 / Letter / Legal / custom millimetre sizes
- Automatic orientation keeps landscape pages landscape
- Proportional scaling, centred, with optional margins
- Stays vector — text remains selectable

## FAQ

### My pages are different sizes and printing is inconsistent — what do I do?

Run the file through this tool to standardise every page to A4, then print. Each page is scaled proportionally and centred, so nothing is distorted.

### Will small pages look blurry after being enlarged?

Vector content (text, line art) scales up cleanly. If the page is a scanned image, enlarging does cost sharpness — tick “Do not enlarge pages smaller than the target” to keep them at their original size.

### Can it cut off content?

No. The scale factor is the smaller of the width and height ratios, so the whole page always fits, with white space left over.

### Are my files or data uploaded?

No. Everything runs locally in your browser with no network upload, and is discarded when you close the page.

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