Merge PDF Files Online - Free PDF Combiner
Combine multiple PDF files into a single document. Drag to reorder.
Drop PDF files here or click to upload
Up to 20 PDF files, max 50MB each
How to Merge PDF Files
- Click the upload area or drag and drop your PDF files
- Arrange the files in your preferred order using the arrow buttons
- Click "Merge PDFs" to combine all files
- Download your merged PDF file
All processing happens in your browser using client-side JavaScript.
Why Use Our Free PDF Merger?
Combining PDF files is essential for organizing documents, creating reports, or consolidating paperwork. Our free online PDF merger makes it easy to join multiple PDFs into a single file without installing software or creating an account.
Common Uses for Merging PDFs
- Combining scanned documents into one file
- Merging chapters of an ebook or report
- Consolidating invoices or receipts
- Creating portfolios from multiple PDF pages
- Joining contracts and appendices
Features of This Tool
- Drag and drop reordering - Arrange PDFs in any order before merging
- No file limits - Merge up to 20 PDFs at once
- Browser-based - Works on Windows, Mac, Linux, and mobile devices
- No registration - Start merging immediately without signup
Frequently Asked Questions
Is there a file size limit?
Each PDF can be up to 50MB, and you can merge up to 20 files at once. Since all processing happens in your browser, very large files may take longer depending on your device's memory and processing power.
Will the quality be reduced?
No. The merger copies pages exactly as they appear in the original PDFs. All text, images, formatting, bookmarks, and links are preserved at full quality without any re-compression or quality loss.
Is my PDF uploaded to a server?
No. All merging happens locally in your browser using JavaScript. Your files never leave your device and are not sent to any server. This makes the tool safe for merging confidential documents, contracts, or sensitive materials.
Can I change the order of pages?
Yes. Use the up and down arrow buttons next to each file to reorder them before merging. The files will be combined in the order shown, from top to bottom. If you need to reorder pages within a single file, use our Split PDF tool first.
Can I merge password-protected PDFs?
If a PDF requires a password to open, you'll need to unlock it first using dedicated software. PDFs with only editing restrictions (but no open password) may work, depending on the protection level.
What happens to bookmarks and links?
Internal links (like table of contents links within a document) are preserved. Bookmarks may be combined but could require manual reorganization in a PDF editor. External hyperlinks (to websites) remain fully functional.
Why is my merged PDF so large?
The merged file is the sum of all input file sizes. If you need to reduce the final file size, consider using our Image Compress tool on any images before adding them to the PDF, or use a dedicated PDF compression tool after merging.