Merge Your
PDF Files
Combine multiple PDF files into a single PDF. Works in your browser — your files never leave your device. Free and unlimited.
PDF Merge
Combine multiple PDFs into one file
How It Works
Follow four simple steps to merge multiple PDF files into a single document. Everything runs entirely in your browser.
Select files
Drag and drop or click "Select Files" to upload multiple PDF files at once.
Arrange order
Drag and drop files in the list to set the merge order as needed.
Merge
Click the "Merge PDFs" button. The process runs instantly in your browser.
Download
Save the merged PDF file to your device.
Why Covrixa?
About PDF Merge
Covrixa PDF Merge is a free online tool that lets you combine multiple PDF files into a single PDF document. Whether you need to archive monthly invoices, compile presentation pages, or merge contract documents — this tool handles all merging operations locally in your browser.
Powered by the pdf-lib library, the tool processes files entirely on your device. After uploading, you can reorder files by dragging and dropping, merge any number of PDFs with a single click, and download the result instantly. Each page retains its original size and orientation with no quality loss. Even PDFs with different page sizes (A4, Letter) and orientations (portrait/landscape) merge seamlessly.
Privacy Notice: The PDF merge process happens entirely in your browser. Your files are never sent to Covrixa servers or shared with third parties. Google Analytics may be used for site performance measurement. After the initial page load, you can even merge PDFs without an internet connection.
What features does it offer?
Unlimited PDF uploads, drag-and-drop reordering, one-click merging, and instant download. All processing is browser-based.
How does ordering work?
Drag and drop files in the list to rearrange their merge order. Pages from the first file appear first in the output.
Is there a file size limit?
No specific limit, but files over 50 MB may affect performance depending on your browser's memory capacity.
Example Usage Scenario
Imagine you have three separate PDF files: an invoice, a contract, and an appendix. You want to merge them into a single PDF to send to your client as one complete document.
Step 1: Go to Covrixa PDF Merge and drag and drop all three PDF files. Each file will appear in the list as it is loaded.
Step 2: Arrange the order. Drag the invoice to the top, the contract in the middle, and the appendix at the bottom so they appear in the correct sequence in the merged PDF.
Step 3: Click "Merge PDFs". Within seconds, all three files are combined into one document. The resulting file contains the invoice first, followed by the contract, and finally the appendix.
Using this method, you can organize weekly invoice archives, monthly reports, or project documents into single files for a well-structured digital archive. Since everything runs in your browser, your documents stay private and secure.
Frequently Asked Questions
Is the PDF merge process secure?
How many PDF files can I merge?
How do I set the order of the merged PDFs?
Can PDFs with different sizes and orientations be merged?
Can I merge PDFs without an internet connection?
What will the file size be after merging?
Can I merge password-protected PDFs?
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