Combining a batch of PDFs into a single document is a common workflow across many industries: merging monthly financial reports into an annual compilation, assembling exhibit...
Open Merge PDFMerge as many PDFs as you need into one file.
Drag multiple at once or individually.
Drag into correct sequence. Preview page counts.
One click merges all. Downloads immediately.
Choose a PDF from your device. Drag and drop or click to browse. Your file stays on your computer.
Your browser handles all the work using JavaScript. Nothing is uploaded to any server. Processing is instant.
Save the processed file to your device. That's it — no account, no email, no waiting.
When merging multiple documents with a server-based tool, the privacy exposure scales with the batch size. A 10-file merge means 10 separate uploads, each transmitting a document through third-party infrastructure. A 20-file compilation means 20 transmissions.
For document compilations such as legal exhibit sets, financial statement packages, or compliance filing bundles, the aggregate content of the batch is almost always more sensitive than any individual document. The compilation reveals relationships between documents and provides a comprehensive view that individual files do not.
ModernPDF processes the entire batch locally in your browser. All files are read into memory from your device, combined into a single PDF structure, and the result is output as one document. The batch never exists anywhere except in your browser's memory on your device.
There is no limit on the number of individual files. The practical constraint is total combined file size: 10MB for free tier users and 500MB for Pro subscribers. In practice, this accommodates most document compilation projects from small packets to large archive assemblies.
Yes. Drag document thumbnails into any order you want after adding them. The merged output PDF follows your exact arrangement. Preview the page count from each document to verify the compilation sequence before merging.
The merge combines pages in sequence, preserving each page's original content including any printed page numbers. If you need new consistent page numbering across the entire merged document, use Page Numbers after merging to add sequential numbering.
The merge tool accepts PDF files specifically. Convert other formats first using the appropriate tool: JPG to PDF, PNG to PDF, Image to PDF, or convert Word documents using a word processor's PDF export function.
Yes. Bookmarks and internal navigation links from every document in the batch are preserved in the merged output. They remain functional and point to the correct pages in the new combined document structure.
Free to start. Files stay on your device. Upgrade to Pro for unlimited use.
Open Merge PDF