# Convert Letter PDF to A4

> Resize every page of a US Letter PDF to A4 (or Legal) in your browser. Pages are scaled to fit and centred, text stays selectable, nothing is cropped.

URL: https://tools.cuelark.com/letter-to-a4
Publisher: Cuelark Team (https://cuelark.com)
Updated: 2026-11-10
Price: free, no sign-up
Privacy: runs in the browser; files are not uploaded

Drop a PDF made on US Letter paper and download the same document on A4 pages. Each page is scaled by about 97% to fit the narrower A4 width and centred, so nothing is cut off, and the text stays as sharp, selectable vector text.

## How to use it

1. Drop one or more PDFs. A4 is already selected; switch to Letter or Legal if you need those.
2. Optionally add a 6 mm margin for printers that cannot print to the edge, or choose Shrink only.
3. Check the page sizes and scale in the report, then download the resized PDF.

## Details

- **Sizes:** Letter 8.5×11 in (215.9×279.4 mm, 612×792 pt). A4 210×297 mm (595×842 pt)
- **Scale:** Letter to A4: about 97.3%, limited by the width, with a small band at the top and bottom
- **Kept:** Text (selectable), vector graphics, images at their original resolution, page order, landscape pages stay landscape
- **Not kept:** Links, comments, fillable form fields and digital signatures. The page warns before you download
- **Library:** pdf-lib, loaded on demand; runs in the browser

## Questions

### Are my files uploaded?

No. The page loads its code once, then reads and processes your files inside the browser tab. Nothing is sent to a server; you can confirm it in your browser's network panel while a file converts.

### Will the content be cropped?

No. Each page is scaled to fit inside A4 and centred. Letter is 6 mm wider and 18 mm shorter than A4, so the page shrinks to about 97.3% and gains a thin white band at the top and bottom.

### Can't I just print Letter on A4 with Fit to page?

You can print it that way, but the file is still Letter. If a portal, a print shop or a colleague in Europe or Asia needs an A4 file, resize it here.

### Does it work for scanned PDFs?

Yes. A scanned page is an image inside the PDF, and it is scaled the same way without re-compression.

### What happens to fillable forms and signatures?

Form fields stop being fillable and a digital signature is no longer valid, because the pages are redrawn. The page warns when a file has them. Fill in the form first, and send signed documents unchanged.

## Related tools

- [Convert A4 PDF to Letter](https://tools.cuelark.com/a4-to-letter)
- [Merge PDF](https://tools.cuelark.com/merge-pdf)
- [Organize PDF pages](https://tools.cuelark.com/organize-pdf)
- [Image to PDF under a size limit](https://tools.cuelark.com/image-to-pdf-under-size)