Insert Blank Pages into PDF Documents Insert blank pages into a PDF at specified positions.

What Is PDF Add Blank Pages?

The PDF Add Blank Pages tool lets you insert blank pages into your PDF at any position. Add pages at the beginning, end, after every existing page, or at specific page numbers. Control how many to insert at each position. They match the dimensions of the first page in your document. Ideal for preparing documents for duplex printing, adding note-taking space, or creating section separators. All processing is done locally in your browser.

Why Use PDF Add Blank Pages?

• Multiple insertion modes (start, end, after each, custom)
• Configurable number of blank pages
• Blank pages match existing page dimensions
• No server upload — processes in your browser

Common Use Cases

Duplex Printing

Add blank backs for single-sided content printed double-sided.

Notes Space

Insert blank pages for handwritten annotations.

Section Breaks

Add separator pages between document sections.

Booklet Prep

Pad page count for booklet printing requirements.

Technical Guide

Uses pdf-lib to load the source PDF and insert new blank pages. The tool reads the first page dimensions to create matching blank pages. Supports four insertion modes: start (insertPage at index 0), end (addPage), after-each (reverse iteration with insertPage), and custom positions (comma-separated page numbers). Multiple blank pages can be inserted at each position. The modified document is saved and offered for download.

Tips & Best Practices

• 1
  Use "after each" for duplex printing preparation
• 2
  Custom positions use 1-based page numbers
• 3
  Blank pages match first page dimensions
• 4
  Combine with page numbering after adding blanks

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Frequently Asked Questions

Q Do blank pages match my document size?

Yes, blank pages use the same dimensions as the first page of your PDF.

Q Can I add different sized blank pages?

Currently blank pages match the first page size. For different sizes, use multiple operations.

Q What does "after each" do?

It inserts blank page(s) after every existing page in the document.

Q Are custom positions 0-based or 1-based?

Custom page numbers are 1-based (first page is 1).

Q Is there a limit on pages to add?

You can add up to 20 blank pages per insertion point.

About This Tool

PDF Add Blank Pages is a free online tool by FreeToolkit.ai. All processing happens directly in your browser — your data never leaves your device. No registration or installation required.