Pure In-Browser PDF Resizer

Resize PDF Pages Online

Fit document contents to standard A4, Letter, Legal, A3, A5 or custom dimensions. 100% private and processed locally on your device.

or drag and drop your PDF here

Local In-Browser Processing
.pdf • Private In-Browser Processing • Your file never leaves your device

Resize Configuration

Choose target dimensions and content layout preferences

Awaiting PDF

Please select or drop a PDF file above to enable resizing

100% In-Browser Processing Guarantee

• Zero Server Transmission: Your PDF never leaves your computer or phone. All page mathematics and binary generation happen inside client JavaScript memory.

• Vector Text Preservation: Documents retain selectable vector fonts, text characters, and sharp vector graphics without lossy pixelation or rasterization.

• Smart Proportional Centering: Content is proportionally scaled and centered on each target page without distortion or cropping.

• Multi-Page & Mixed Layouts: Multi-page documents with mixed portrait and landscape pages are individually measured and resized preserving document integrity.

Resize PDF Online for Free

Our free online PDF resizer lets you quickly change PDF page dimensions without installing software or creating an account. Whether you need to adjust a single-page flyer or a multi-page report, you can easily format documents to international paper standards such as ISO A4, A3, and A5, or North American office formats including US Letter and US Legal.

In addition to standard paper sizes, you can specify custom PDF page dimensions with precise measurements in millimeters, inches, or PostScript points. All adjustments support both portrait and landscape page orientations.

Page Size vs. File Size: Resizing a PDF modifies the physical canvas dimensions of each page. If your goal is to shrink the storage footprint of your document for email attachments or upload limits rather than changing page dimensions, you can compress your PDF to reduce file size.

What Can You Use a PDF Resizer For?

Common scenarios where adjusting document page dimensions is essential:

1Changing A3 to A4

Scale large architectural drawings, posters, charts, and spreadsheets down from A3 to standard A4 for easy printing on everyday office and home desktop printers.

2Preparing PDFs for Printing

Format presentation slides, digital invoices, and eBooks to match standard print shop requirements, avoiding accidental margin cuts and uneven borders.

3Converting Letter to A4

Adapt North American US Letter documents for international submission in countries utilizing ISO A4, or convert A4 documents to US Letter for US corporate and academic filings.

4Standardizing Mixed Page Sizes

Combine scanned receipts, letters, and ledger sheets into a single, uniform layout so every page shares identical dimensions across the entire document.

5Creating Custom Page Dimensions

Configure custom width and height specifications for specialty projects such as print-on-demand books, shipping labels, marketing brochures, event programs, and digital reader formats.

How to Resize a PDF

  1. 1

    Choose a PDF

    Drag and drop your PDF into the upload area above or click to browse files from your computer, tablet, or smartphone.

  2. 2

    Select the Target Page Size & Orientation

    Select a standard preset (such as A4, US Letter, A3, A5, or US Legal) or choose Custom Size to enter explicit dimensions, then choose Portrait or Landscape.

  3. 3

    Choose Content Scaling & Placement

    Choose Fit & Center to scale content proportionally within the new canvas, or Original Size & Center to preserve 1:1 original physical sizing with balanced margins.

  4. 4

    Resize and Download the Result

    Click the "Resize PDF" button to process the document locally in your browser, then download your resized PDF immediately with no watermarks.

Resize PDF Without Distorting Your Content

When changing paper dimensions, choosing how existing text, images, and vector artwork adapt to the new canvas prevents unwanted cropping and visual warping:

Fit & Center (Recommended)

Proportionally scales all page elements up or down so the entire page content fits cleanly within the new canvas boundaries while strictly maintaining the original aspect ratio without clipping.

Original Size & Center

Maintains all elements at their exact 1:1 original physical size and centers them within the new page dimensions. Ideal when expanding margins or preparing documents for standard binding.

Frequently Asked Questions

Can I resize a PDF to A4?

Yes. Simply upload your document, select the A4 preset (210 × 297 mm), choose portrait or landscape orientation, and select your preferred scaling mode (Fit & Center or Original Size).

Can I resize a PDF to Letter?

Yes. Choose the US Letter preset (8.5 × 11.0 in / 215.9 × 279.4 mm) to adapt documents for North American printers and office filing systems.

Can I use custom PDF dimensions?

Yes. Select "Custom Size" in the configuration panel to input exact width and height values in millimeters (mm), inches (in), or PostScript points (pt).

Does resizing a PDF reduce its file size?

Resizing alters the physical canvas dimensions of each page rather than targeting file compression. If you need to shrink file size for email limits, check out our Compress PDF tool, which optimizes images and stream overhead.

Does resizing change the PDF content?

Resizing modifies page canvas boundaries and scales or repositions elements according to your selected mode. It preserves existing text, vector graphics, fonts, annotations, bookmarks, and document metadata without watermarks.

Looking to reduce PDF file size instead?

Resizing changes physical page dimensions. Use our compression tool to reduce file weight for sharing and web uploads.

Compress PDF