Merge PDF Files
Combine documents in the exact order you choose while preserving text, links, vectors, and original page quality.
Upload Files
Drop 2-10 PDFs here, up to 100 MB total
Merge PDF Files
Use this merge PDF tool to combine invoices, reports, forms, and scanned pages into one document in your browser. The upload order becomes the final page order, which makes it useful for fast document assembly without a server round trip.
Why Use This Tool
- Combines multiple PDF files into a single download.
- Processes files locally in the browser for better privacy.
- Works well for reports, contracts, forms, and scanned page sets.
How DocuKit Processes This Task
- Loads each source with pdf-lib and copies its pages into a new PDF in the visible file order.
- Source page sizes are retained. Document-level items such as signatures, bookmarks, forms, and attachments still need verification in the new file.
Best For
- Combining invoices, appendices, signed pages, and scans into one shareable file.
- Creating one final PDF from several small source documents.
- Quick browser-based assembly when page order matters more than advanced editing.
What to Check Before Downloading
- Confirm the file order (drag to rearrange) before merging because the final PDF follows that sequence.
- Open the merged file and spot-check the first, middle, and last pages.
- Review form fields, annotations, or unusual source PDFs carefully after export.
Current Limitations
- If a source PDF is damaged or protected, the merge can fail and should be retried with a clean file.
Helpful Guides
How to Merge PDF Files Online
This guide explains the practical workflow for combining multiple PDF files online and keeping the output organized.
How to Split, Extract, Group, or Chunk PDF Pages
Choose the split strategy that matches the job, validate page ranges against thumbnails, and verify each result before discarding the source PDF.
How to Compress a PDF and Choose the Right Quality
DocuKit can preserve interactive page content or rebuild pages as compressed JPEG images; this guide explains which profile fits each document.
How to Add a Clear Text Watermark to a PDF
A useful watermark communicates document status without hiding content; preview representative pages, target the correct range, and understand its security limits.
How to Reorder PDF Pages Without Losing Track
Build and verify a complete physical page sequence while preserving the original PDF pages in the exported file.
How to Compare PDF Versions Without Missing Page Changes
A review-focused method for comparing revised PDFs without assuming that matching page numbers contain matching content.
How to Fill and Sign a PDF Safely in Your Browser
A practical review-first workflow for completing PDF forms while understanding the difference between a visible electronic signature and a certificate-backed digital signature.
How to Rotate PDF Pages and Fix Mixed Orientation
Correct sideways and upside-down PDF pages with a preview-first workflow that keeps each change clear before export.
How to Turn Plain Text into a Readable PDF
Prepare plain text, choose readable page settings, and verify line wrapping and pagination in the generated PDF.
How to Convert Markdown to a Compact, Professional PDF
Structure Markdown for predictable pagination, readable code and tables, working links, and a compact selectable-text PDF.
Common Questions
How do I merge PDF files in the right order?
Upload your files, then drag them into the order you want. The merged PDF keeps that visual order from top to bottom.
Does the merge PDF tool upload my files to a server?
No. The merge happens in the browser so your PDF files stay on your device during processing.