PDF Merge Tool
Combine multiple PDF files into a single document, in your browser.
Click to select two or more PDF files
Powered by pdf-lib, loaded on demand — nothing is uploaded.
About This Tool
Merging PDFs — combining a cover letter with a resume, or several scanned pages into one file — usually means uploading your documents to a third-party website. This tool merges PDF files directly on your device using an in-browser PDF engine, so files containing private or sensitive information never have to leave your computer.
How to Use PDF Merge Tool
- Select two or more PDF files using the upload button.
- Drag to reorder the files in the list if needed.
- Click "Merge & Download PDF" to get the combined file.
Frequently Asked Questions
Is there a limit to how many PDFs I can merge?
You can merge as many files as your browser's memory can handle; for typical documents this is easily dozens of files.
Do the merged PDFs need to be uploaded anywhere?
No. The merge happens locally in your browser using JavaScript — your files are never sent to a server.
Will the page order be preserved?
Yes, pages appear in the merged file in the same order as the file list, including the original page order within each PDF.