Merge PDFs & Images
Combine multiple PDFs, photos, and scans into a single organized document. Reorder files, select specific page ranges (e.g. 1-3, 5), and merge 100% on your device.
Drag & drop PDF files or images here, or browse
Supports PDF, JPG, PNG, WebP. Select at least 2 files to combine.
Merging document pages...
Assembling PDF-Lib object streams
PDFs Merged Successfully!
Combined in seconds • zero uploads
Combine multiple PDF documents seamlessly
Drag & Drop Order
Reorder files and pages effortlessly before merging.
Lossless Merging
Preserves vector fonts, hyperlinks, outlines, and form fields.
Confidential Merging
Combine financial statements and contracts with zero cloud exposure.
How to Merge Multiple PDF Documents
Follow these 4 simple steps to process your files directly on your device with 100% privacy.
Add Your PDFs
Drop multiple PDF files or select them in batch from your computer or phone.
Arrange Page Order
Drag and drop cards or use the Move Up / Move Down buttons to order documents sequentially.
Merge In-Browser
Click 'Merge PDFs'. The PDF-Lib WebAssembly engine concatenates streams and updates page dictionaries locally.
Save Combined Document
Download your single unified PDF immediately, or route to Compress or Sign without re-uploading.
Supported Formats & Processing Limits
Built for Everyday Productivity
Combine Scans & Receipts for Official Filings
Legal petitions, court filings, tax audits, and visa applications frequently require a single consolidated PDF. Merge all your individual supporting documents in the exact required sequence.
Merge Then Compress: The 1-Click Workflow
After merging multiple documents, the combined file can be large. Use DocuShrink's seamless in-memory file chaining to jump directly into the Compressor without having to re-select your file.
How to Merge Multiple PDF Files into One Document Offline
Discover how PDF-Lib concatenates page object trees and outlines while maintaining vector sharpness and hyperlinks.
Frequently Asked Questions
Everything you need to know about browser processing, file safety, and format capabilities.
Is there a limit on how many PDFs I can combine for free?
You can merge unlimited documents up to standard browser memory limits. For batch drops over 3 files, our free tier processes seamlessly, with optional Pro for power users.
Will form fields, hyperlinks, and bookmarks remain intact?
Standard vector graphics, hyperlinks, text layers, and embedded fonts are preserved. Dynamic interactive form fields are merged into unified page trees.
Can I merge password-protected PDF files?
You will need to provide the unlock password for any encrypted PDF before merging, as our engine requires read access to re-index page objects.
Are any of my merged documents sent to the cloud?
Zero bytes leave your device. All merging is performed locally in browser RAM using WebAssembly.