Merge PDF
Combine multiple PDFs into one file in seconds.
Drag & drop your files here
or click to browse
pdf, pdf · Max 100 MB
Privacy: Your files are processed entirely in your browser and are never uploaded to any server. All data is automatically cleared after processing.
How it works
Upload
Drop your files into the upload area above.
Process
Merge PDF runs instantly in your browser — no waiting for server processing.
Download
Download your Merged PDF. Your files are then automatically deleted from memory.
Related Tools
About Merge PDF
Merge PDF lets you combine multiple PDF files into a single document in just a few clicks — entirely in your browser. Whether you're assembling a report from several chapters, joining scanned receipts, or consolidating contracts, DocFlow AI merges your PDFs instantly without uploading them to any server. Your files stay 100% private.
Why use Merge PDF?
- Combine unlimited PDFs into one clean file.
- Reorder files before merging with simple drag-and-drop.
- No file size limits and no watermarks on the output.
- Files never leave your device — fully private and secure.
- Works on any device: Windows, Mac, Linux, Android, and iOS.
When to use Merge PDF
Frequently Asked Questions
Are my files uploaded to a server?
No. Merge PDF runs entirely in your browser using pdf-lib. Your files never leave your device, which makes it completely private and secure.
Is there a limit on the number of files I can merge?
There is no hard limit imposed by DocFlow AI. The practical limit depends on your device's available memory. For best performance, merge fewer than 100 files at a time.
Can I reorder the files before merging?
Yes. After adding files you can drag them to reorder, or remove any file before creating the final merged PDF.