How to Use the PDF Paper Size Converter (A4, Letter, Legal, A3)
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1
Upload a PDF document that was created with mismatched page dimensions.
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2
Select your Target Standard Paper Size: A4 (210 x 297 mm), US Letter (8.5 x 11 in), US Legal (8.5 x 14 in), or A3.
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3
Choose your Scaling Mode: "Fit Proportional (Recommended)" to avoid distortion, or "Stretch to Fill".
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4
Select Orientation: Auto-Match, Force Portrait, or Force Landscape.
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5
Click "Convert Paper Size & Download PDF".
Practical Example & Use Case
Common Real-World Scenario
Converting an American US Letter (8.5x11 in) PDF resume or contract to European standard A4 size so it prints without cut-off margins on international office printers.
Technical Notes & Limitations
Browser Engine Architecture
Recalculates media boxes and page scaling matrices in `pdf-lib` preserving vector sharpness and embedded fonts.
Frequently Asked Questions
Will text and images lose quality?
No, vector elements and high-resolution images are scaled proportionally without raster degradation.