Split by chunk size or custom pages.
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Built with privacy in mind. All processing happens entirely in your browser using open-source libraries.
A PDF merger combines several separate documents into one file. Instead of juggling separate files, sending them in separate attachments, or stitching them together in a heavy desktop program, you drag the files in, arrange them in the order you want, and download a single combined document.
Documents rarely arrive in the shape you actually need. A contract might be split across several signed scans, a report might have separate cover and appendix files, and an application package is often a handful of files that belong together in one submission. Merging solves the organizational side of these tasks, and doing it well means keeping the original quality intact — no re-encoding, no layout drift, no recompression of every page. The ability to merge up to twenty files and export the result as either a single document or a ZIP also gives you control over how the output is used.
This merger uses a document-processing library that runs entirely in your browser, so the documents you are combining are read and rewritten locally. That is an important guarantee when the files contain contracts, invoices, or personal records. There are no size games either — up to 300 MB total across files, with no watermark and no signup standing between you and the finished document.
A frequent use is assembling a complete application or submission: a cover sheet, a CV, and several supporting scans merged into one file with the pages in the order the reviewer expects. The ZIP option adds flexibility, letting you keep the merged file and the originals together in a single download.
Merging also helps with long-term organization. A single consolidated document is easier to file, search, and archive than a scattered folder of related files, and it keeps the page order unambiguous for anyone who opens it. Whether you are assembling a year of statements or a project deliverable, ending with one clean file simplifies every later step.
Who is it for? Students compiling submissions, professionals combining scanned documents, and teams consolidating reports and contracts.
The riskiest moment with any online PDF tool is the upload step. Many services ask you to send your documents to their servers first, and from that point your contract, invoice, or personal file is outside your control. With this tool you can merge PDF without uploading your files anywhere: the pages are combined inside your browser by an open-source library that runs entirely on your device.
That changes the privacy picture in three practical ways. This site has no upload endpoints, so there is no server inbox of user documents waiting to be stored or reviewed. There are no accounts, which means no profile could ever be linked to the files you process. And because nothing leaves your machine, there are no server-side file-size quotas or watermark gates between you and the finished document.
The result is simple: even a large set of signed scans can be combined in one drag-and-drop pass, and the only thing moving over the network is the tool’s own code. If you want proof, watch the badge at the bottom of this page while you merge — it counts outbound requests, and for a local merge it stays at zero.
No, because they are never uploaded in the first place. Your files are merged locally in your browser, so there is no transfer for anyone to intercept.
The everyday cost of un-merged documents is easy to underestimate. Each separate file means another attachment, another download, and another chance for the recipient to miss one. Combining related documents into a single file removes that friction for both sides, and doing it without re-encoding pages means the output keeps the original quality with no visible loss.
Privacy is the other decisive factor. Online merging services that accept your documents on their servers expose contracts, invoices, and personal records to an unknown third party. This tool processes everything locally in your browser, so sensitive files are combined on your device and never uploaded, and there are no accounts, watermarks, or file-count games to deal with.
Yes, free with no signup or watermarks.
No. Merging happens locally in your browser.
Up to 150 MB per file and 300 MB total.
Yes, it works in mobile browsers.
Yes — use the up and down arrows on each file to rearrange the list, then download.
No — pages are combined without re-encoding, so the output keeps the original quality.