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Drop your PDFs here
or browse your files · add as many as you like
Your files are processed on your device and are never sent to any server.
Combine several PDFs into one file, in the order you choose. Free, unlimited, and processed entirely on your device.
or browse your files · add as many as you like
Merging PDFs combines several documents into a single file — useful for bundling scanned pages, joining receipts, or assembling a report from separate sections. CorePDFTools merges your files directly in the browser, so even confidential documents stay on your device.
Most online mergers upload your files to a server to combine them. For sensitive documents that's a privacy risk, and it also means waiting on uploads and downloads. Because CorePDFTools merges locally, your files never leave your device, there are no size-based upload waits, and pages are copied exactly — so there's no quality loss or re-compression.
Scanners and phone cameras often save one file per page. Merge them back into a single, ordered document before sharing or printing.
Join individual receipts and invoices into one PDF for an expense claim, so reviewers open one file instead of twelve.
Combine separately prepared sections — cover letter, agreement, appendices — into one clean document.
No. Pages are copied as-is into the new document, so there is no re-compression or quality loss.
There's no fixed limit — you're bound only by your device's memory. Very large batches may be slower on phones.
No. The entire merge happens in your browser. Your files are never sent to a server.
Set the file order before merging. To rearrange individual pages, use the Organize Pages tool afterwards.
Open this page in your mobile browser, add the files, and merge — there's no app to install, and it works the same as on desktop.
Remove the protection first (if you have the password), then merge. Encrypted files can't be combined until unlocked.
Yes — files are merged in the order shown, so arrange them before merging.