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Merge PDF
Combine multiple PDF files into a single document instantly. Free, private, and secure — files are processed in your browser.
Drag & drop PDF files here
or click to browse
Drag files in the list to reorder them.
✅ Merged successfully!
How to Merge PDF Files
- Click Choose Files or drag and drop your PDF files onto the box above.
- Reorder files by dragging them in the list if needed.
- Click Merge PDFs — your files are combined instantly in your browser.
- Click Download to save the merged PDF.
Is my data safe?
Absolutely. All processing happens entirely in your browser using the pdf-lib JavaScript library. Your files are never uploaded to any server. No account is required.
What is the file size limit?
There is no server-side limit — the limit is your browser's available memory. For most users, merging PDFs up to several hundred MB works without any issues.
Frequently Asked Questions
Can I merge more than 2 PDFs?
Yes! You can add as many PDF files as you like. There is no limit on the number of files.
Does the merged PDF keep the original quality?
Yes. FileKit copies the pages directly without re-encoding, so there is no quality loss.
Can I rearrange pages before merging?
You can drag the files in the file list to change the order. Each file's pages are kept in their original order within the merged document.