Merge PDF Files
Combine multiple PDFs into a single unified document in seconds. No file limits, fast and completely secure.
Select PDF files to merge
Drop PDF files here or click to browse. Reorder files before merging.
How to use Merge PDF in 3 easy steps
No software installation required. 100% free and runs smoothly on mobile, tablet, or desktop.
1. Select Your Files
Drag & drop or browse your local device to upload two or more PDF files you want to combine.
2. Reorder Files
Use the up and down arrow buttons to arrange your documents in the exact order you want them merged.
3. Merge & Download
Click "Merge PDFs" to assemble your document instantly in your browser, then download your combined PDF.
Guaranteed Document Confidentiality
Your files stay on your machine. Client-side tools do not send your files to our servers.
Frequently Asked Questions
Everything you need to know about Merge PDF on HoudiniPDF.
Is it safe to merge confidential documents on HoudiniPDF?
Yes, 100%. HoudiniPDF processes your PDF files directly inside your browser using WebAssembly. Your files are never sent over the internet or stored on our servers.
How many PDF files can I merge at once?
You can merge up to 50 PDF files simultaneously with a total limit of 50MB per individual file.
Will the quality of my original PDFs be preserved?
Yes. Merging combines the exact vector text, high-resolution images, links, and formatting of your original files without any loss of quality.
Can I reorder the pages before merging?
Yes! You can reorder the documents in this tool, or use our "Organize PDF" tool if you want to visually shuffle or delete individual pages.
Is there any cost, subscription, or watermark added?
No. HoudiniPDF is completely free. We do not insert any logos, watermarks, or limitations.
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