PDF Page Size Converter

The PDF Page Size Converter changes the physical dimensions of every page in a PDF between standard international paper formats — A3 (297x420mm), A4 (210x297mm), A5 (148x210mm), Letter (216x279mm), Legal (216x356mm), Tabloid (279x432mm), B5 (176x250mm) — or any custom size in millimeters. Page size mismatches are one of the most common causes of PDF printing failures, clipped margins, and content repositioning when opening documents across different regions. Three scale modes (Fit, Stretch, Center) let you control exactly how existing content maps to the new dimensions, all processed privately in your browser.

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How to Use

Upload your PDF, then select a target page size from the preset list or enter custom width and height in millimeters. Choose a scale mode: Fit (scales content proportionally without cropping), Stretch (fills the page completely), or Center (positions content without scaling). Set orientation and optional margins, then click Convert Page Size to download the resized PDF.

Common Use Cases

• •Converting A4 PDF documents to US Letter size to prevent content clipping when printing in North America
• •Resizing Legal-format PDF forms to A4 for international compliance submissions
• •Standardizing mixed page sizes within a merged PDF by normalizing A4, A3, and Letter pages into a uniform format
• •Scaling a standard A4 PDF to A3 poster dimensions for exhibition or large-format printing
• •Converting US Letter academic papers to A4 for submission to European journals with strict page format requirements

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