Convert PDF to A4 Size Online For Free
Turn Legal, Letter, or any page size into a standard A4 PDF. Content is scaled to fit — no cropping, no distortion.
Current page size: —
Target: A4 (210 × 297 mm)
Auto matches each page's original orientation
*All processing happens in your browser. Your PDF is never sent to any server.
Need a different page size? Use our Resize PDF tool.
How to Convert a PDF to A4 Size
- Upload your PDF file — the tool detects its current page size.
- Choose the A4 orientation (Auto keeps each page's original orientation).
- Pick a content scaling mode (fit, stretch, or center).
- Click "Convert to A4 & Download" to get your A4-size PDF.
Why Use Our PDF to A4 Converter?
The easiest way to standardize your PDF pages to A4
100% Private
All processing happens in your browser. Your PDF is never uploaded to any server.
Any Size to A4
Convert US Legal, US Letter, A3, A5, or any custom page size to standard A4 in one click.
Smart Scaling
Fit, stretch, or center your content on the A4 page. No cropping or distortion unless you choose it.
No Quality Loss
Content is scaled mathematically. Vector text and graphics remain sharp at any size.
Instant Processing
Conversion is fast — even for large documents. No waiting for server processing.
No Signup Required
Start converting immediately. No account or registration needed.
Why Convert a PDF to A4?
A4 (210 × 297 mm) is the international standard paper size used in almost every country outside the United States and Canada. Printers, copy shops, government offices, and universities around the world expect documents in A4 — a PDF created in US Letter or US Legal format will print with awkward margins, get cut off, or be rejected by systems that require A4.
Converting a PDF to A4 size solves this instantly: every page is resized to the exact A4 dimensions, and the content is scaled proportionally so nothing is cropped or distorted. This is essential when submitting forms and applications internationally, printing US documents on A4 paper, or standardizing page sizes across merged documents.
Our converter changes the actual page dimensions of the PDF (not just the print settings), so the resulting file is a true A4 document that works everywhere.
Convert Legal to A4 PDF
US Legal (8.5 × 14 in) pages are longer than A4, so legal documents, contracts, and court filings often need conversion before they can be printed or filed internationally. This tool handles Legal to A4 PDF conversion automatically: upload the PDF, keep the default "Fit" scaling, and every Legal page is scaled down proportionally onto an A4 page.
The same applies to Letter to A4: US Letter (8.5 × 11 in) is slightly wider and shorter than A4, and the Fit mode adjusts the content so it fits the A4 proportions perfectly.
Because the conversion uses PDF-level vector transformations, text stays selectable and sharp — the result looks like the document was created in A4 from the start.
Need to Automate?
Use template-based PDF generation instead
Create professional A4 PDF templates with our visual editor, then generate unlimited PDFs via API.
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PDF to A4 Converter FAQs
Common questions about converting PDFs to A4 size
Is this PDF to A4 converter free?
Is my PDF secure?
What is the exact size of A4?
How do I convert a Legal size PDF to A4?
How do I convert a Letter size PDF to A4?
What does the Auto orientation do?
Will converting to A4 affect quality?
Can I convert to a size other than A4?
Is there a file size limit?
Can I convert a password-protected PDF?
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