# Resize PDF — Free Online (PdfPixels)

> Scale PDF pages to standard paper sizes (A4, Letter, Legal, A3, A5) with automatic orientation for printing and official submissions.

Canonical URL: https://www.pdfpixels.com/tools/resize-pdf
Processing: server
Cost: free, no signup required for core use.

## Short answer

The Resize PDF tool by PdfPixels converts any PDF to a standard paper size such as A4 or Letter. Upload your file, pick the target size and orientation, and download the uniformly resized PDF for free.

## About

Resize PDF scales every page of your document to a standard paper size — A4, Letter, Legal, A3, or A5 — without distorting content. Mixed-size documents (for example a contract with letter and A4 scans) are normalized to one consistent sheet, which is exactly what printing services, university submissions, and government portals expect. Pages are scaled proportionally and centered, with automatic portrait/landscape detection or a forced orientation. Processing runs on our servers; there is no signup and no watermark.

## Key features

- Scale to A4, Letter, Legal, A3, or A5 sheet sizes
- Automatic portrait/landscape detection per page, or force one orientation
- Proportional scaling with centering — no content stretching
- Normalizes mixed-size documents to a single consistent sheet
- Works with PDFs up to 50 MB on the server

## How to use

1. **Upload your PDF** — Drop the PDF you want to standardize into the workspace.
2. **Choose the target paper size** — Select A4, Letter, Legal, A3, or A5 and portrait, landscape, or automatic orientation.
3. **Process and download** — Run the resize and download your uniformly sized PDF.

## FAQ

### Will resizing a PDF change its text quality?

No. Vector text and images are scaled mathematically, so they stay sharp at the new page size. Only very low-resolution scans stay as soft as they were.

### Can I convert US Letter to A4?

Yes. Pick A4 as the target size and the tool scales and centers each Letter page onto A4 with correct proportions.

### What happens to pages with different sizes in one file?

Every page is normalized to the target sheet size, so the output PDF has one consistent page dimension throughout.

### Is Resize PDF free?

Yes. It is free with no signup required. Fair-use rate limits apply.

## Limits

- PDF tools: 50 MB per file. Merge: 20 files / 100 MB total / 1000 pages.
- Image tools: 25 MB, 50 MP max. AI tools: 20 MB.
- Rate limits: 20/min per processing route per IP.
- Server-side files are processed ephemerally and purged automatically within 60 minutes.

More tools: https://www.pdfpixels.com/tools — Full machine reference: https://www.pdfpixels.com/llms-full.txt