Click or drag & drop multiple PDF files here
Select 2 or more PDF documents to combine into a single seamless document. Files never leave your device.
Your confidential documents and contracts never leave your computer. All PDF page parsing and merging execute in local browser memory.
Vector paths, fonts, high-DPI graphics, and selectable text are copied directly from the original source files without re-rasterizing.
Filter specific page ranges per file (e.g. 1-3, 5) or interleave two double-sided scanned documents with 1-click collation.
Frequently Asked Questions
How do I reorder PDF files before merging?
You can easily drag and drop any file card into your desired position, or use the left/right arrow buttons on each card. You can also use the "Sort A→Z" or "Reverse" buttons.
Can I select specific pages from each PDF?
Yes! On each document card, enter your desired page numbers in the "Page Scope" input (e.g. "1-3, 5" to include only pages 1, 2, 3, and 5).
What is Collate / Interleave Mode?
Collate mode alternates pages between documents (Page 1 from Doc 1, Page 1 from Doc 2, Page 2 from Doc 1, Page 2 from Doc 2). This is ideal for recombining odd and even pages from manual double-sided scans.
Is there any limit on file count or size?
No artificial limits! You can merge as many PDF files as your computer's available memory permits.
How to Use Alternate & Mix PDF
Interleave and alternate odd/even pages from two separate PDF documents. Follow the quick steps below to operate this tool with maximum speed and complete local privacy.
Step-by-Step Instructions
Simple, actionable steps to use Alternate & Mix PDF efficiently.
Provide Input
Upload your file or paste input data into the Alternate & Mix PDF workspace.
Run Tool
Click the action button to process your data instantly using in-browser WebAssembly.
Save Result
Copy the output data or download the generated file to your device.
How It Works & Capabilities
Technical advantages and operational functions of this tool.
1. In-Memory Input
Files or text inputs are ingested directly into active browser RAM. No temporary files or logs are ever transmitted to any external server.
2. Client-Side Processing
Calculations, transformations, and compilations are performed locally utilizing WebAssembly and modern JavaScript engines for real-time speed.
3. Instant Local Export
Save your results immediately to disk or copy data to clipboard. Outputs maintain complete original quality with zero watermarks.
Frequently Asked Questions
Clear answers about privacy, limitations, and how Alternate & Mix PDF functions.