PDF Merger
Combine multiple PDF files into a single document. Drag to reorder, then merge — 100% in your browser.
- 100% free
- No sign-up
- No limits
- Instant results
What is PDF Merger?
PDF Merger is a free online tool that lets you combine two or more PDF documents into a single file.
Unlike other tools that upload your files to a server, our merger processes everything directly in your browser using JavaScript — your files never leave your device. Simply drag and drop your PDFs, reorder them as needed, and download the merged result instantly. No signup, no file size limits, no watermarks.
How to use PDF Merger
- 1
Upload PDFs
Click the upload area or drag and drop 2 or more PDF files. You can also paste from clipboard with Ctrl+V.
- 2
Reorder files
Drag the grip handles to arrange files in the order you want them merged. The first file becomes the first pages.
- 3
Click Merge
Hit the merge button (or press Ctrl+Enter). The tool combines all pages from each PDF in sequence.
- 4
Preview result
Review the page count and file size of the merged document to ensure everything looks correct.
- 5
Download
Click Download to save the merged PDF to your device. The original files remain unchanged.
Everything this tool
does for you
- Merge unlimited PDF files at once
- Drag-and-drop reordering of files
- Page count shown per file before merge
- 100% client-side — files never uploaded
- No file size limits whatsoever
- No signup or account required
- Preserves all formatting, links and bookmarks
- Works on mobile and desktop browsers
Related free tools
Frequently asked questions
This tool fixed one thing.
Now fix the whole site.
Our scanner runs 240+ checks across 10 audit areas, ranks every issue by the score points it costs, and hands you the code to paste.
Run a free audit- Merge unlimited PDFs into one
- Drag-and-drop reordering
- Preserves all pages and formatting
- Files never leave your browser
- No file size limits
- No signup required