Resize PDF Pages

Key Features

Uniform Page Size

Make every selected page to the same target size — A4 or Letter — so mixed-size documents are more consistent for printing, binding, uploading, and archiving. Landscape source pages use the landscape version of the target size, and pages outside the selected range keep their original size.

Fit Modes

Choose contain to keep the full page visible, cover to fill the target page and potentially crop edges, or stretch to match the exact dimensions.

Print-Ready Output

Standard page sizes reduce surprises when a PDF is sent to a printer, print shop, submission portal, or document archive.

Mixed-Size PDF Cleanup

Normalize documents assembled from scans, office exports, screenshots, and PDFs with different page dimensions.

Private & Local

Resizing runs entirely in your browser using pdf-lib. Your PDF is never uploaded to any server.

How to Use

Add a PDF

Drag and drop or select the PDF whose pages you want to resize. The original file is read locally in your browser.

Choose Size and Fit

Select A4 or Letter, then choose contain, cover, or stretch based on whether you want to preserve the full page, fill the sheet, or match the dimensions exactly.

Resize and Download

Run the tool to create a new PDF with uniform target page sizes, then review representative pages before downloading.

Resize PDF Example

A mixed-size document is normalized to A4 with contain fit, so every page matches while the full content remains visible.

PDF

mixed.pdf (A4 + Letter pages)

A document assembled from files with inconsistent page sizes.

PDF

mixed-resized.pdf (all A4)

Every page is placed on an A4 page with the full original content scaled to remain visible.

How to Resize PDF Pages to A4 or Letter

Why Resize PDF Pages

Documents assembled from different sources often contain mixed page sizes. A single PDF may combine A4 pages, Letter pages, scans, screenshots, and office exports. Standardizing the pages creates a cleaner document and makes printing, binding, uploading, and archiving more predictable.

How It Works

Each source page is placed onto a new A4 or Letter page using the fit mode you choose. Contain preserves the full page and may leave margins. Cover fills the target page but may crop the edges. Stretch matches the target dimensions exactly but can distort the original aspect ratio.

Choose the Right Fit Mode

Contain: The safest option when every part of the original page must remain visible. Empty space may appear around the content.
Cover: Useful when the page should fill the target sheet. Check the edges because content may be cropped when aspect ratios differ.
Stretch: Fills the target dimensions exactly, but may make text, images, or shapes look wider or taller than the original.

A4 and Letter

A4 is commonly used in China, Europe, and many international workflows. Letter is common in the United States and Canada. If a document will be printed or submitted through a specific portal, choose the size required by the destination rather than relying only on the source PDF's current dimensions.

Common Use Cases

Use Resize PDF Pages to:

Make mixed A4 and Letter pages consistent.
Prepare a PDF for printing or binding.
Standardize scanned pages from different sources.
Fit a document to a submission portal's required page format.
Prepare reports, invoices, forms, or application packages for consistent delivery.

Check the Output Before Sharing

Review the first page, a dense page, and any page containing signatures, tables, diagrams, or content near the edges. Check that no important material is cropped and that the selected fit mode has not introduced unwanted distortion.

Limitations

This tool currently targets A4 and Letter sizes. It does not provide arbitrary custom dimensions, visual cropping controls, or advanced print preflight checks. Rebuilding a PDF may also affect interactive features, metadata, bookmarks, annotations, forms, and digital signatures.

Frequently Asked Questions

Are my PDFs uploaded?

No. Resizing happens locally in your browser using pdf-lib. Your PDF never leaves your device and is not sent to any server.

Which page sizes are supported?

This tool supports A4 and Letter target page sizes. It does not currently provide arbitrary custom dimensions.

What does contain fit do?

Contain scales the original page proportionally so the entire page remains visible inside the selected A4 or Letter page. It may leave empty margins around the content.

What does cover fit do?

Cover scales the page proportionally until the target page is filled. If the original and target aspect ratios differ, some content near the edges may be cropped.

What does stretch fit do?

Stretch changes the page content to match the target dimensions exactly. It fills the page but may distort text, images, or shapes if the original aspect ratio is different.

Will the original PDF be changed?

No. The tool creates a new resized PDF and leaves the original file unchanged.

Will text stay selectable?

The output is regenerated for the target page size. Whether text remains selectable depends on the rendering and PDF generation path used for the source content; review the output if selectable text is essential.

Will resizing reduce image quality?

Content is placed on the new page size, keeping its vector content and text layer. Enlarging a small raster image cannot create detail that was not present in the source, while reducing content may preserve appearance but can change pixel-level quality.

Will resizing preserve bookmarks, links, forms, annotations, or signatures?

Page content is placed into a new PDF, but document-level and interactive features may not transfer exactly. Rebuilding the file can also invalidate existing digital signatures.

Should I use contain or cover for printing?

Use contain when no content may be cropped. Use cover only when filling the entire sheet matters more than preserving the page edges. For most mixed-size documents, contain is the safer choice.