Merge PDF files: combine multiple PDFs into one for free
Combine invoices, contracts, scans or reports into a single PDF: select your files, change the order with one click, merge. No upload, no sign-up and no watermark.
- 100% free
- No sign-up
- Your data stays in your browser
- No watermark
Merge PDF files
Privacy: your files are processed locally in your browser only and are never uploaded. On first use the tool loads an open-source library from cdnjs.com.
Merge PDF: how it works in 3 steps
Select your PDFs
Drag two or more PDF files into the box or click to choose them.
Set the order
Arrange the files with the arrows or sort them alphabetically by file name.
Merge and save
Click “Merge PDFs”. The new PDF is downloaded instantly.
Combine PDFs: simple, fast and private
Many portals, authorities and accountants want one single file instead of lots of separate PDFs. This tool joins any number of PDFs in the order you choose, right in your browser, without your documents ever leaving your device.
Typical use cases
- Bundle monthly invoices for accounting or your tax advisor
- Build a job application from cover letter, CV and references
- Combine a contract and its attachments into one document
- Join pages that were scanned one by one
What is kept when merging?
Every page is copied 1:1: text stays searchable, images are not recompressed and each page keeps its size. Bookmarks and fillable form fields of the originals are not always carried over.
Merge PDF: your benefits
Documents stay private
Your PDFs are processed locally, which matters for invoices, contracts and HR files.
Original quality
Pages are copied unchanged, nothing is recompressed.
Any order you like
Move files with the arrows or sort them by name.
Free with no limits
No sign-up, no file limit, no watermark.
Frequently asked questions about the Merge PDF tool
Is merging PDFs free?
Yes. You can merge as many PDFs as you like, free and without sign-up.
Are my PDFs uploaded?
No. Everything happens in your browser. Your documents are neither uploaded nor stored.
How many PDFs can I merge?
There is no fixed limit. With very large files, speed depends on your device’s memory.
Does merging reduce quality?
No. Pages are copied 1:1; images and fonts stay unchanged.
Can I merge password-protected PDFs?
No. Encrypted PDFs are marked and skipped. Remove the password in your PDF program first.
More free online tools
JPG to PDF
Combine photos, scans and screenshots (JPG, PNG, WebP) into one PDF file.
Open tool →PDF to JPG
Save every PDF page as a JPG or PNG image, up to 300 DPI, also as ZIP.
Open tool →Image Resizer
Reduce images in pixel size and file size, several at once, as JPG, PNG or WebP.
Open tool →QR Code Generator
Create QR codes for links, contacts and WiFi. The WiFi code connects phones with one scan.
Open tool →IP Subnet Calculator
Calculate network address, broadcast, subnet mask and host range for IPv4 and CIDR.
Open tool →JSON Formatter
Format, validate and minify JSON, with errors shown by line and column.
Open tool →No more document chaos
MySorty sorts your documents and emails with AI, captures invoices and supports e-invoicing, so you never have to search for PDFs again.