Merge PDF files
Combine multiple PDFs into a single file right in your browser.
Drag & drop PDF files here
or click to select · up to 20 files · 100 MB each
Merging PDFs…
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Frequently asked questions
Are my PDFs uploaded to a server?
No. All merging happens in your browser using JavaScript and WebAssembly. Your files never leave your device — even offline, merging is purely local.
Is there a file size limit?
Each file is capped at 100 MB and up to 20 files at a time for browser responsiveness. For larger batches, merge in groups.
Can I reorder the files?
Yes — drag the rows in the list, or use the up / down arrow buttons.
Does it preserve the original page quality?
Yes. Pages are copied as-is — text, vectors, fonts and images are not re-encoded.