Merge PDF
Combine multiple PDFs into one — free, fast, and fully private.
Output
Add two or more PDFs to merge them into one file. Drag to set the order.
How ordering works
PDFs are joined top to bottom in the order shown. Drag a file or use the up/down arrows to reorder. Everything runs on your device — your PDFs are never uploaded.
About the Merge PDF tool
Merge PDF files into a single document in seconds, right in your browser. Drop in two or more PDFs, drag them into the order you want, and download one combined file — no sign-up, no watermarks and no email required. Whether you need to combine PDF invoices, join scanned pages or stitch chapters together, this free PDF merger handles it instantly.
Unlike most online tools, this one is 100% client-side: your documents are processed locally and never uploaded to any server, so even sensitive contracts and statements stay on your device. It's a genuinely private way to join PDF files — fast because nothing has to travel to the cloud, and trustworthy because your data never leaves your computer.
Frequently asked questions
Answers to the questions we hear most about this tool.
How do I merge PDF files into one?
Add the PDFs you want to combine (click to browse or drag them in), arrange them in the order you'd like them to appear, then click Merge. The tool joins them into a single PDF you can download immediately — no account or installation needed.
Is this PDF merger free, and are my files uploaded?
Yes, it's completely free with no watermarks or limits on the number of merges. Your files are never uploaded — the merging happens entirely in your browser on your own device, so your documents stay private and never touch a server.
Can I reorder the files before merging?
Yes. Once you have added your PDFs you can drag them into any order — or use the up and down buttons — before merging, so the final document follows exactly the sequence you want. Remove any file you added by mistake before you combine them.
Is there a file size or number-of-files limit?
There's no fixed cap — you can combine many PDFs at once. Because everything runs locally, the practical limit is your device's available memory, so very large or numerous files simply take a little longer to process on slower machines.
Does it work offline and on mobile?
Yes. Since all the work happens in your browser, the tool runs on phones, tablets and desktops, and once the page has loaded it keeps working even without an internet connection — your files are merged on-device either way.
Related tools
Split PDF
Split a PDF into separate files or extract the pages you need — free and in your browser.
Open toolDelete PDF Pages
Delete pages from a PDF in your browser — pick from thumbnails, download a clean file.
Open toolJPG to PDF
Turn JPG, PNG and WebP images into a single PDF — reorder pages and pick the page size and margins, all in your browser.
Open tool