Merge PDF — Combine PDF Files Online for Free
Combine multiple PDF files into one document. Drag and drop files, arrange them in the desired order, and download the result.
How to merge PDF
- 1Drag PDF files to the upload area or click to browse
- 2Arrange files in the desired order by dragging
- 3Click 'Merge' and wait for processing
- 4Download the merged PDF file
Features
- Merge unlimited number of PDF files
- Reorder files before merging
- Page preview
- Processed entirely in the browser — files are never uploaded to a server
Use cases
- Combine multiple documents into one file for sending
- Merge scanned pages into a single document
- Compile a report from multiple PDF parts
FAQ
Is it safe to merge PDF online?
Yes, absolutely safe. All files are processed in your browser and never leave your computer. We do not upload or store your files.
How many files can I merge?
You can merge any number of PDF files at once. The practical limit is determined by your browser's available RAM — typically dozens of files work without issues.
Is quality preserved when merging?
Yes, merging happens without quality loss. All pages, fonts, images, and vector graphics are preserved in their original form — files are not re-encoded.
Can I merge password-protected PDFs?
No, encrypted PDFs cannot be merged directly. First remove the protection using the 'Decrypt PDF' tool, then merge the files.
Are bookmarks and hyperlinks preserved?
Hyperlinks within pages are preserved. Bookmarks (table of contents) from source files are not currently carried over — the result file will not contain a bookmark tree.
Will the file size change after merging?
The resulting file will be approximately equal to the sum of the originals. If the size is too large, use the 'Compress PDF' tool after merging.
Does it work on mobile?
Yes, the tool works fully in mobile browsers — Chrome, Safari, and Firefox. For large files, using a desktop computer is recommended.