Merge PDF
Combine multiple PDF files into one document, instantly and privately in your browser.
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About the Merge PDF
Merge PDF lets you stitch two or more PDF documents into a single, properly paginated file without uploading anything to a server. Drag-and-drop the files you want to combine, reorder them if needed, and download the result in seconds.
How to use
- Click the upload area or drag multiple PDF files into the drop zone.
- Preview each page thumbnail and drag cards to reorder them if the sequence matters.
- Press the Merge button and download the single combined PDF when processing completes.
Benefits & key features
- Runs entirely in your browser — your files never leave your device.
- Handles invoices, contracts, study notes, scanned forms and e-books with equal ease.
- No page-count or file-size caps imposed; limited only by your device's available memory.
- Perfectly preserves text selectability, bookmarks and embedded fonts from the source PDFs.
Pro tip
If the order of pages matters, rename your files 01-cover.pdf, 02-content.pdf, … before dragging them in — the tool respects the original drop order.
Why choose toolsfy for PDF tools?
Cloud-based PDF editors ask you to upload sensitive invoices, contracts or passport scans to servers you will never see — and then offer a "premium" plan to remove watermarks they added themselves. toolsfy turns that model upside down: every PDF operation on this page runs locally in your browser using the same modern Web APIs Chrome, Edge and Firefox ship with. Your file never leaves the device, no account is required, and there is no artificial cap on pages or size.
Common use cases
- Lawyers and accountants cleaning up scanned bundles of evidence before a client meeting, without sending them through a third-party server.
- University students assembling a single submission-ready PDF from multiple chapters, diagrams and reference pages — on a laptop with flaky campus Wi-Fi.
- Small-business owners stripping metadata, rotating scans, or watermarking product manuals before sharing them publicly on their website.
Frequently asked questions
Are my PDF files uploaded anywhere?
No. Every operation happens inside this tab using the PDF-lib / pdf.js libraries loaded from a public CDN. The file bytes never travel to a toolsfy server.
Is there a file-size or page limit?
The only limit is your device's available memory. A mid-range laptop handles hundreds of pages comfortably; a phone handles smaller files well but may slow down past 50 MB.
Do I need Adobe Acrobat or any desktop software?
No. A modern browser is all you need. The output PDF is standards-compliant and opens in Acrobat, Preview, Foxit and every other mainstream reader.