PDF A4 Converter
Make any PDF print correctly on A4, the standard paper size in Europe, Asia, Africa and most of the world. Pages in US Letter, Legal, A3 or mixed sizes are scaled to fit A4 or centred at their actual size, in their own orientation or forced to portrait or landscape, with an optional margin. Text stays vector and selectable.
- Files stay on your device
- No sign-up
- Free to use
How to use PDF A4 Converter
- Drop a PDF onto the page and check its current sizes.
- Choose orientation and how content fits.
- Add a margin if your printer needs one.
- Convert and download the A4 PDF.
PDF A4 Converter features
Exact A4
595 × 842 points (210 × 297 mm).
Letter to A4
Scales by about 3% so nothing is cut.
Mixed documents
Every page becomes A4.
Orientation
Kept per page, or forced.
Margins
Optional white border.
Vector quality
No rasterisation.
When to use PDF A4 Converter
- Printing American documents in Europe or Asia.
- Submitting forms that require A4.
- Unifying scans of different sizes.
- Preparing files for print shops.
PDF A4 Converter FAQ
How big is A4?
210 × 297 millimetres, or 8.27 × 11.69 inches, 595 × 842 points in PDF units.
What happens to Letter pages?
Letter is 6 mm wider and 18 mm shorter. Scale to fit shrinks it by about 3% so the full width fits; actual size keeps it unscaled and adds space above and below, cutting 3 mm at each side.
Will text stay sharp?
Yes. Pages are placed as vector content.
Are links kept?
Links and form fields are not transferred to the new pages.
What about landscape pages?
They become A4 landscape unless you choose portrait.
Is my PDF uploaded?
No. It is processed on your device.
Why convert PDFs to A4
A4 belongs to the ISO 216 series used almost everywhere except the United States, Canada and a few other countries. Its proportions follow the square root of two, so halving an A4 sheet gives two A5 sheets of the same shape, which makes scaling between A sizes clean.
Documents created in North America usually use US Letter. Printed on A4 without adjustment, they may lose a few millimetres at the sides or be shrunk unpredictably by the printer driver. Converting them first gives a predictable result: scaled slightly to fit, or kept at actual size with the overflow trimmed evenly.
Official submissions often require A4 explicitly, and print shops expect consistent page sizes. Scans of receipts, letters and certificates produce mixed sizes that look untidy when printed together; converting all pages to A4 makes the document uniform.
The conversion keeps each page as vector content, centred on the A4 sheet, so text stays sharp and selectable. It runs in your browser with pdf-lib.
When printing the converted file, choose “Actual size” or 100% in the print dialog. Printer drivers that apply their own “Fit to page” scaling on top can shrink the content a second time. If your printer leaves an unprintable border, add a margin of 5 mm in the converter instead, so the scaling happens once and predictably.