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Resize PDF

Change PDF page dimensions to A4, Letter, Legal, or custom sizes.

Drop your PDF here to resize page dimensions

Change to A4, Letter, Legal, or custom sizes with 100% vector preservation.

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Vector Preservation Notice:

Page resizing preserves 100% of original vector typography, embedded fonts, and vector paths. Documents are never rasterized or converted to low-resolution bitmaps during page transformation.

Quick Guide

How to Use Resize PDF

01

Select PDF

Upload the document you need to resize.

02

Choose Target Size

Pick a preset like A4 or Letter, or enter custom dimensions.

03

Resize & Save

Download your resized document immediately.

Key Capabilities

Standard presets: A4, US Letter, US Legal, A3, A5
Custom width and height in points
Portrait, landscape, and automatic orientation
Scale to Fit, Scale to Fill, and Center modes
100% vector preservation — zero pixelation or rasterization

Local Execution

Creates a new document canvas with the target dimensions directly in your browser. Embeds source pages as vector content streams with proportional scaling and centering, preserving crisp vector typography.

Helpful Tips
  • •Use Scale to Fit to prevent content clipping when switching between Letter and A4.
  • •Center mode without scaling may clip content if the target size is smaller than the original.
pdf-lib Page Matrix Scaling & MediaBox Adjustment

Proportional Vector Scaling & Page Matrix Resizing

Standard Dimensions Library

Convert documents between standard international and North American sizes including A4, A3, A5, US Letter, Legal, and Tabloid.

Mathematical Vector Scaling

Because vectors scale via coordinate transformation matrices, text, lines, and figures rescale with zero blurriness, pixelation, or downsampling.

Auto-Centering & Aspect Ratio Protection

When converting between differing aspect ratios (such as US Letter to A4), content is automatically centered on the new canvas with proportional margins.

Technical Notes
  • •Useful for standardizing mixed-size documents prior to printing or commercial binding.
  • •Selectable text layers and interactive links remain fully functional after scaling.
  • •Fast, local processing with zero external server dependencies.

Frequently Asked Questions

Does resizing make my PDF blurry or pixelated?↓

No. PDFSimplify uses mathematical vector transformations. Vector text, fonts, and illustrations remain razor sharp at any target size.

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