Upload multiple PDFs, see every page as a thumbnail, and drag pages into the exact order you want before merging.
Merge PDF combines two or more PDF files into a single document — but instead of just stacking whole files on top of each other, it shows you a thumbnail of every individual page from every file you upload, so you can drag pages into the exact final order you want, page by page.
Everything happens locally in your browser — your files are never uploaded to a server. That means it works even with sensitive or private documents, and there's no waiting on an upload or download from a remote service.
Simple "merge whole files" tools only let you decide which file comes first — but real documents are rarely that tidy. Maybe you need page 3 of one PDF to sit between pages 1 and 2 of another, or you want to drop a single blank page from a scan. Because this tool breaks every file down into individual page thumbnails, you have complete control over the final page order, not just the file order.
When you upload a file, the tool renders a small preview image of every page directly in your browser so you can see exactly what you're arranging. When you click merge, it copies each page — in the exact order shown in the grid — from its original source file into a brand-new PDF document, preserving the original text, vector graphics, and formatting of every page exactly as it was in the source file. No page is ever re-rendered as a flattened image in the final output; only the thumbnails you see while arranging are images.
Because everything happens on your device, there's no upload wait time and no privacy risk from sending documents to a remote server. Very large files or a very high page count may take a little longer to render thumbnails for, depending on your device's available memory, since all processing happens locally rather than on a remote server.
Yes — upload as many PDFs as you need, and every page from every file appears together in one grid that you can freely reorder.
No — the final merged PDF copies each page's original content directly, so text stays sharp and searchable and image quality is unchanged. Only the on-screen thumbnails are simplified preview images; the actual output keeps full original quality.
Password-protected files need to be unlocked first. Use the Unlock PDF tool to remove the password, then upload the unlocked file here.
No. The entire process — rendering thumbnails and merging — runs inside your browser using JavaScript. Your files never leave your device or touch a server.
Docutoolbox