Merge multiple PDFs into one file online for free. No signup, no watermark, no uploads to servers. Fast and private.
Reports, proposals and contracts often arrive as separate PDFs that belong together. Merge them into a single file so the client reads one document instead of hunting through an email chain. The order is yours to control, so the final file tells the story you want it to tell.
Slide decks, speaker notes and handouts end up as separate PDFs that audiences expect in one place. Combine them in the order the session runs and distribute a single handout file. Attendees keep one file, and you stop answering requests for the missing part.
Multi-page scans arrive as several files, one page per scan, and that is painful to store. Merge the pages into one coherent document so the whole scan lives in a single file. It keeps archives tidy and makes the document far easier to search and forward.
Accountants and freelancers collect invoices and receipts all year and need them in order. Merge monthly documents into a single file per period so the record is complete and chronological. At tax time, everything is one place instead of a folder of strays.
Chapters, cover pages and appendices are often drafted as separate PDFs before they become a book. Merge them in reading order into one complete, ready-to-share document. Reviewers read the whole draft in sequence instead of hopping between files.
Everything runs locally using pdf-lib. Your files never leave your device, which means no uploads, no waiting on a server, and no chance of your documents sitting in someone else's storage. Sensitive files stay exactly where they should.
Rearrange files by dragging them into your desired order, or use the sort dropdown to order by name ascending, name descending, size low to high, or size high to low. The merge output follows your arrangement exactly.
See the page count and file size for every PDF before merging, plus a running total of files and bytes. That makes it easy to spot a wrong file or an oversized document before you waste a merge, and the summary at the top of the list keeps everything visible at a glance.
Drop a batch of PDFs straight into the drop zone or click to browse, and add more files at any time before you merge. There is no fixed limit, the practical ceiling is your browser's memory, so even large collections process in one go.
Because merging happens entirely in the browser, your PDFs are never transmitted anywhere. Contracts, scans and financial documents stay on your machine, and the merged result downloads straight from your browser.
Select multiple PDF files from your device. You can add more files at any time.
Drag files to reorder them, or use the sort dropdown to rearrange by name or size.
Review page counts and sizes, and remove any file you added by mistake.
Click "Merge PDFs" to combine all files into one document, then download the result.
No. Everything is processed in your browser using pdf-lib. Your files never leave your device.
Since everything runs locally, the limit depends on your browser's memory. Most devices can handle files up to several hundred MB.
Currently this tool merges files page by page in order. For per-page reordering, upload each PDF individually and arrange the files in your desired order.
Only PDF files are supported. Each file must be a valid PDF document.
Yes. Use the sort dropdown to order files by name ascending, name descending, size low to high, or size high to low.
Yes, completely free. No signup, no watermark, and no limit on the number of files you can merge.
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