PDF Tools
Merge PDF
Combine multiple PDF files into one.
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What is Merge PDF?
The Merge PDF tool concatenates any number of PDF files into one PDF. Each page is copied verbatim so the output preserves text, images, and layouts.
How it works
pdf-lib reads every uploaded PDF and copies its pages into a new empty PDF in the order you upload them.
- Upload 2+ PDFs. Drag in any number of PDF files.
- Merge. Press Merge to download the combined PDF.
Examples
Combine report.pdf and appendices.pdf
Produces a single report-with-appendices.pdf.
Common mistakes
Password-protected PDFs
Locked PDFs cannot be read by pdf-lib. Remove the password first.
Alternatives
Reorder PDF
If you need to rearrange pages within one file, use Reorder PDF Pages instead.
Frequently asked questions
Will text remain searchable in the merged PDF?
Yes — pages are copied without re-rendering, so embedded text remains selectable.