Merge PDF Files

Combine PDFs in the order you want with the easiest PDF merger.

Select PDF files

or drop PDFs here

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Files never uploaded
100% browser-side processing
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No file size limits
Process any file size
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Instant conversion
No server wait time
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100% Free forever
No account or subscription
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No watermarks
Clean output guaranteed

Free Online PDF Merger

Merge multiple PDF files into one organized document without size limits, no registration, and no uploads to third-party servers. Our PDF merger uses your browser's processing power to combine PDFs locally — ensuring your confidential documents never leave your device.

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❓ Frequently Asked Questions

There is no hard limit. You can merge as many PDF files as your browser's memory supports. For very large batches, we recommend merging in groups of 10–20 for best performance.

No. ConvertFigure merges PDFs without re-rendering the content — all text, images, vectors, and formatting are preserved at 100% original quality.

Password-protected PDFs need to be unlocked before merging. Remove the password with Adobe Reader or use our Edit PDF tool before combining.

Yes! Drag and drop the PDF cards to reorder your files before clicking Merge. Pages will appear in your chosen order in the final merged PDF.

ConvertFigure processes everything in your browser — nothing is ever uploaded. Your PDF files remain completely private on your device.

There is no fixed size limit. Performance depends on your device's RAM. PDFs up to several hundred MB merge without issues on modern devices.

Yes! The PDF merger is fully mobile-responsive and works on iPhone, Android, and tablets with any modern browser.

Bookmarks from individual files are currently not merged, but all hyperlinks within page content are preserved in the final merged PDF.