Resize PDF pages to standard paper formats including A4, A3, Letter, and Legal.
Changing the page size of a PDF resizes every page to a standard format — A4, Letter, Legal, Tabloid, or custom dimensions — without distorting or cropping the content. This is essential when your document needs to meet specific submission requirements: a European client requires A4, a US court requires Letter size, or a printer needs Tabloid. PDFly scales and fits each page to the new dimensions intelligently, preserving the layout as closely as possible. All processing happens in your browser.
Upload your PDF, select the target page size from the presets or enter custom dimensions, and download the resized file. The tool offers several scaling options: fit content to the new page (scales everything proportionally), scale to fit (adds margins to preserve the full page), or stretch to fill (may distort if aspect ratios differ). The fit-to-page option with added margins is the safest choice for most documents — it ensures nothing gets cut off. The tool processes every page in the document consistently.
Page size conversion is common when preparing documents for international submission, converting between US and international standards, or preparing files for specific print equipment. Be aware that scaling up (e.g., Letter to A4 or vice versa) may slightly reduce visual size, while scaling down can make text smaller and harder to read. Always review the output to confirm text remains legible. For documents with precise formatting requirements, check the output carefully — page breaks, margins, and image positions may shift slightly during resizing. The tool preserves all content but cannot create space that doesn't exist in the original layout.
