Merge PDF — put the PDFs together.

Merging PDFs without uploading them

Most merge tools ask you to upload your files to a server, combine them there, and download the result. This one does the combining inside your browser tab, which matters when the documents are contracts, invoices or anything with an identity document attached.

1. Drop in the files. Drag PDFs onto the box or click to browse. You can select several at once, and you can add more later without losing the ones already in the list. Each row shows the file name, page count and size so you can confirm you picked the right version.
2. Put them in order. The arrow buttons move a file up or down the list. Pages come out in exactly the order shown, so the order in the list is the order in the result.
3. Remove anything you do not want. The delete button takes a file out of the merge without touching the original on your disk. Nothing is modified until you press the button.
4. Press Merge and download. Combining happens immediately. The result reports the total page count and size, and the download button saves the merged file straight to your downloads folder.

When this comes up

• Assembling a signed contract. The main agreement, the schedule, and the signed signature page often arrive as three separate PDFs. Sending them as one file is what the other side expects.
• Building an expense report. Receipts photographed to PDF, a cover sheet, and a bank statement. Merge them into one file that matches the order on the claim form.
• Combining scanned chapters. A long document scanned in batches comes out as several files. Merging restores the reading order.
• Sending a portfolio or a job application. A CV, a cover letter and two work samples become one attachment, which is the format most applicant systems actually want.

A worked example: three documents into one

A 12-page contract, an 8-page appendix and a 4-page signature pack merge into a 24-page file, in the order you list them. Order is the only decision that matters: drag a file up the list and it moves up the document.

Merging is a copy operation, so page size, image resolution and text stay exactly as they were. A Letter-size invoice glued to an A4 report keeps both sizes and the reader will show them differently on screen. What does not survive is everything outside the page: bookmarks, form fields, comments and digital signatures are document-level structures, and three inputs with three sets of them produce an output with none. If a signature matters, merge first and sign the merged file.

The output is often smaller than the sum of the inputs. Three files that each embed the same 2 MB font subset become one file with a single copy, because identical objects are shared rather than duplicated.

Where merging goes wrong

• Encrypted files. A PDF with an owner password that blocks editing cannot be read by the browser at all. Remove the restriction first, or the merge reports it as unreadable.
• Mixed page sizes and orientations. Nothing breaks, but a landscape plan inside a portrait document prints cropped unless the printer is set to fit to page.
• Upload order versus filename order. Drag-and-drop gives you the order you dropped, not 01, 02, 03. Check the list before merging forty scanned pages.
• Very large files. Merging happens in browser memory, so a 400 MB scan set can exhaust a phone's tab. Use a desktop for that one.

Questions