The Ultimate PDF Merge Tool
When you have information scattered across multiple files, sharing and archiving becomes a headache. heyPDF provides a robust, browser-based PDF merge tool that lets you stitch together disparate documents into one continuous file. Whether you are combining chapters of a manuscript, assembling a financial portfolio, or collating student assignments, our tool does it instantly.
Why Use an Online PDF Merge Tool?
Desktop software for merging PDFs (like Adobe Acrobat) is expensive and bulky. Using a built-in OS tool (like Mac Preview) works for one or two files, but quickly becomes tedious and error-prone when dealing with large batches. heyPDF's online merge tool gives you a visual, drag-and-drop workspace where you can see all your files at once, reorder them intuitively, and merge them with a single click—from any device, completely free.
How the heyPDF Merge Tool Excels
- Visual Reordering: Don't guess the order. Our tool displays clear thumbnails of your uploaded files so you can drag them into the perfect sequence before merging.
- High Capacity: Merge up to 50 files in a single operation on the free tier. Perfect for massive end-of-year archiving projects.
- Multi-Format Support: You can drop JPG and PNG image files right into the merge tool. They will automatically be converted to PDF pages and inserted where you place them.
- Lossless Quality: The merge tool simply concatenates the file structures. It does not re-encode or compress the contents, ensuring 100% original quality preservation.
A Secure Tool for Sensitive Documents
We know that the documents you merge are often confidential—legal contracts, medical records, or financial statements. heyPDF's merge tool is built with security at its core. Files are uploaded via encrypted 256-bit SSL connections. Processing happens in isolated cloud sandboxes. One hour after your merge is complete, the original files and the merged output are permanently and automatically deleted from our servers. We never read, store, or sell your data.
How to use Merge PDF — step by step
Add Files to the Tool
Drag your PDFs into the merge tool workspace, or click to select files from your computer, Google Drive, or Dropbox.
Organize the Sequence
Drag the file thumbnails to arrange them. The first file (top left) will become the first pages of your new PDF.
Click Merge
Hit the 'Merge PDF' button. Our powerful cloud servers will combine the files in seconds.
Download Output
Save your merged document. It is completely free of watermarks and ready to share or print.
Why choose heyPDF?
100% Free Forever
No hidden charges, no credit card, no premium walls. All 26 tools are completely free.
No Registration
Use any tool instantly without creating an account or giving up your email.
Privacy First
All files are encrypted with 256-bit SSL and permanently deleted from our servers after 2 hours.
Works on Any Device
Desktop, tablet, iPhone, Android — any modern browser on any OS works perfectly.
Frequently Asked Questions
Yes. The heyPDF merge tool is 100% free. You can use it as many times as you want without creating an account or paying a fee.
No. heyPDF never adds watermarks or branding to your merged files. Your output document remains clean and professional.
Free users can merge up to 50 files in a single operation (up to 25MB per file). Pro users can merge up to 100 files at once.
Yes! heyPDF is fully optimized for mobile browsers. You can use the merge tool on your iPhone or Android to combine files directly from your phone's storage.
Absolutely. All files are encrypted during transfer and automatically deleted from our servers 1 hour after you merge them.
Related PDF Tools
After using Merge PDF, you might also need these tools:
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Expert Resources
How to Merge PDF Files Online — Step by Step Guide 2026
Learn how to combine multiple PDF documents into one single file easily on Mac, Windows, iOS, and Android.
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