PDF merger
Combine several PDFs into one.
Your inputs
Your results
Ready when you areYour results will appear here.
How it works
Copy all pages from selected PDFs into a new document in file-selection order. Generate a three-page sample for a real downloadable demonstration.
Read the source reference ↗A few things to know
Review file-selection order before merging. Unencrypted PDFs only. Input is limited to 25 MB total, 20 files and 200 pages; output to 50 MB. Copying pages does not preserve document-level forms, bookmarks, attachments or signature validity. Inspect the result before use.
When to use this tool
Combine page content from several PDFs into one local document. The selected file order determines the merged page order.
- Combine scanned pages.
- Assemble a document packet.
- Test local PDF merging.
How to use pdf merger
Prepare the inputs
Choose PDFs in the intended order or try the generated sample.
Choose the settings
Enter page selections or processing limits.
Review and export
Download the result and inspect pages, annotations and any forms before use.
Try the supplied example
Inputs
source: Generated sample
Result
The generated sample produces a downloadable three-page PDF.
What it means
Document-level forms, bookmarks and digital signatures need separate inspection.
Common mistakes to avoid
Check the selected file order
Check the selected file order.
Rewritten signatures cannot be assumed valid
Rewritten signatures cannot be assumed valid.
Frequently asked questions
Definitions, edge cases, and practical next steps for this tool. Search all tool FAQs ↗
Are files uploaded?
No. PDF parsing and export happen locally.
How is order chosen?
The order returned by your file picker is used; inspect the input file table.
Are encrypted PDFs supported?
No. They are rejected without ignoring encryption.
Are signatures preserved as valid?
No. Rewriting a document does not preserve signature validity.
Are bookmarks or forms preserved?
Document-level structures are not guaranteed; this tool copies pages.
How many pages can I combine?
Up to 200 pages across 20 files and 25 MB of input.
Are my inputs uploaded or stored?
Processing happens locally in your browser. This tool does not upload inputs. Downloads stay on your device; sharing or opening them in another service is your choice.
What should I check before using the output?
Review file-selection order before merging. Unencrypted PDFs only. Input is limited to 25 MB total, 20 files and 200 pages; output to 50 MB. Copying pages does not preserve document-level forms, bookmarks, attachments or signature validity. Inspect the result before use.
Explore the topic in the blog
Sources and method
Use the references below to check definitions and platform guidance. The model’s scope and limits are explained above. Read our editorial standards.