Merge PDF files without uploading them
This tool combines multiple PDF files into one document directly in your browser. Add your files, arrange them in the order you need, and download the result — no server involved.
It is designed for everyday tasks such as assembling a contract with its appendices, combining separately scanned pages, or preparing a document package before sending it by email or uploading to a portal.
Privacy note: All PDF processing happens locally in your browser. No file data is uploaded or stored remotely.
How to combine PDF files
- Click the upload area or drag and drop your PDF files.
- Review the file list — each entry shows the filename and size.
- Use the arrow buttons to reorder files as needed.
- Remove any file you no longer want to include.
- Click Merge PDF once you have at least two files.
- Download the combined PDF when it is ready.
Common use cases
- Combining a signed contract with its annexes and terms.
- Merging multiple scanned pages into one submission document.
- Assembling reports from different sources into a single file.
- Joining invoices or receipts before uploading to an accounting system.
- Preparing a multi-part application package for a government or HR portal.
What stays private
Your PDF files are read and processed entirely inside your browser tab. Nothing is sent to a server. When you close the tab, all file data is discarded automatically.
This makes the tool suitable for sensitive documents such as contracts, identification papers, medical records, invoices, and internal reports.
Limitations to keep in mind
- Password-protected PDFs: Files that are encrypted or require a password cannot be merged. The tool will show an error for that file and skip it.
- Large files: Very large PDFs may be slow to process or may exceed your browser's available memory. If that happens, try merging fewer or smaller files.
- Interactive form fields: PDF forms merged with this tool may lose interactivity. The page content is preserved, but fields may become static.
- Page-level reordering: This tool merges entire files in the order you set. To reorder individual pages within a file, use the Split PDF tool first.
FAQ
Are my PDF files uploaded to a server?
No. All processing happens locally in your browser. Your files never leave your device.
How many PDF files can I merge at once?
There is no hard limit on the number of files. In practice, merging is limited by your browser's available memory. For most use cases, merging up to 20–30 typical documents works without issues.
Can I change the order of files before merging?
Yes. Use the arrow buttons next to each file to move it up or down in the list. The final PDF will follow the order shown on screen.
What happens if one of my PDFs is password-protected?
Password-protected PDFs cannot be merged. The tool will show an error for that specific file and skip it. Remove the password in a trusted desktop app before retrying.
Will interactive form fields work in the merged PDF?
Page content is fully preserved, but interactive form fields may become static after merging. If you need editable forms, fill them before merging.