Resize PDF: Free Online PDF Page Size Changer
Change PDF page size to A4, Letter, Legal, A5, or any custom dimensions instantly. Choose from Fit, Fill, or Stretch scaling modes for perfect results. No uploads, no limits — 100% private.
Standard & Custom Sizes
Choose A4, Letter, Legal, A5, or enter any custom width and height in millimeters for non-standard requirements.
3 Scaling Modes
Fit (maintain ratio), Fill (crop edges), or Stretch (exact fit). Choose how content adapts to the new page size.
100% Private
Your files never leave your device. All resizing happens in your browser — no server uploads, no cloud processing.
Resize PDF
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100% Private - Your files never leave your device
Best Free PDF Resizer Online
Need to resize PDF pages? Our free PDF resizer lets you change PDF dimensions to any standard or custom page size instantly. Unlike iLovePDF or SmallPDF that upload your documents to remote servers, our PDF page size changer processes everything in your browser — your files never leave your device. Whether you need to change PDF page size for printing, convert to A4, or scale for e-readers, get precise results with no daily limits and no registration required.
How to Resize PDF Pages
Resize PDF online in 4 simple steps:
- Upload your PDF file by dragging or clicking the upload area
- Select target page size (A4, Letter, Legal, A5, or custom dimensions)
- Choose orientation (Portrait/Landscape) and scaling mode (Fit, Fill, or Stretch)
- Click Resize and download your resized PDF instantly
When You Need to Resize PDF Pages
Print Compatibility
Resize PDFs to match your printer paper size. Convert US Letter to A4 or vice versa so documents print perfectly without clipping or scaling issues.
International Standards
Convert between A4 (international) and Letter (US) paper sizes. Ensure documents meet regional formatting requirements for submission or filing.
E-Reader Optimization
Resize PDFs for better viewing on Kindle, Kobo, or tablet screens. Scale pages down to A5 or custom e-reader dimensions for comfortable reading.
Poster Printing
Scale PDF designs up to larger page sizes for poster or banner printing. Use the Stretch or Fill mode to maximize content on oversized paper.
Booklet Creation
Resize pages to A5 for booklet printing. Scale down A4 documents to half-size so they fold correctly for saddle-stitched or bound publications.
Standardize Mixed Sizes
When a PDF contains pages of different dimensions, resize them all to a single uniform page size for consistent printing and professional presentation.
PDF Smaller vs Other PDF Resizers
| Feature | PDF Smaller | iLovePDF | SmallPDF | Adobe Acrobat |
|---|---|---|---|---|
| Price | 100% Free | $6-9/month | $12/month | $20/month |
| Page Sizes | Standard + Custom | Standard only | Standard only | Standard + Custom |
| Scaling Modes | Fit / Fill / Stretch | Fit only | Fit only | Fit / Custom |
| Privacy | No uploads | Server upload | Server upload | Cloud/Desktop |
| Free Usage Limits | Unlimited | Limited tasks | 2 tasks/day | Trial only |
| Registration | Not required | Optional | Required | Required |
Supported Page Sizes & Scaling Options
- A4: 210 x 297 mm — International standard, most common worldwide.
- Letter: 8.5 x 11 inches — US standard for business and personal documents.
- Legal: 8.5 x 14 inches — US legal documents, contracts, and filings.
- A5: 148 x 210 mm — Half of A4, ideal for booklets and e-readers.
- Custom: Define your own width and height in millimeters for any requirement.
- Fit: Scale content to fit the new size while maintaining aspect ratio (no cropping).
- Fill: Scale to fill the new page size completely (may crop edges).
- Stretch: Stretch content to fit exactly (may distort proportions).
Frequently Asked Questions
How do I change the page size of a PDF?
Upload your PDF to our resizer, select your target page size (A4, Letter, etc.) or enter custom dimensions, choose your scaling preference, and click resize. Your resized PDF downloads instantly.
Is the PDF resizer free to use?
Yes! Our PDF resizer is 100% free with no limits. Resize as many PDF pages as you need - no registration, no premium plans, no watermarks added.
Can I resize a PDF to A4 for printing?
Absolutely! A4 is one of our most popular options. Simply select A4 from the page size dropdown, and your PDF will be resized to 210 x 297 mm - perfect for standard printing.
Will resizing affect my PDF quality?
The Fit scaling option maintains aspect ratio and quality. For best results when enlarging, start with a high-quality source PDF. Shrinking PDFs generally preserves quality well.
Can I resize multiple PDFs at once?
Currently the tool processes one PDF at a time. Upload your file, choose your target size, download the result, and repeat for additional files. Each resize takes only seconds.
What is the difference between resizing and cropping a PDF?
Resizing changes the overall page dimensions and scales content to fit the new size. Cropping removes content from the edges without changing the scale. Use resizing to change paper size and cropping to trim margins.
Does the PDF resizer work on mobile devices?
Yes! Our PDF resizer is fully responsive and works on smartphones and tablets. Upload your PDF, select the target size, and download the resized file directly on your mobile device.
Can I enter custom dimensions instead of standard sizes?
Yes. In addition to standard sizes like A4, Letter, Legal, and A5, you can enter any custom width and height in millimeters. This is ideal for non-standard paper sizes or specific project requirements.