Merge PDFs in seconds
Combine contracts, reports, scans, or chapters into one document. Drop in two or more PDFs, drag them into the right order, and merge — the pages are copied losslessly, so text stays selectable and nothing is re-compressed.
There is no page limit and no file size cap beyond what your device can handle, because there is no server doing the work.
Your documents stay private
Unlike most online converters, FileLark never uploads your files to a server. The conversion runs entirely inside your browser using modern web technology, which means it works offline once the page has loaded, there are no file size queues or daily upload limits, and your images can never be stored, scanned, or leaked — they simply never leave your device.
That makes this tool safe for the documents people most often need to merge — leases, invoices, legal filings, and medical records.
Frequently merged, frequently asked
The merged PDF preserves each source document exactly: bookmarks-level fidelity of page content, embedded fonts, and images. Password-protected PDFs need to be unlocked before merging. If you only need some pages from a document, use the Split PDF tool first to extract them, then merge the pieces.