Merge PDFs
Merge multiple PDF files into one document. Reorder pages, preview page counts, and download the combined PDF. All processing happens in your browser.
About Merge PDFs
This PDF merge tool lets you combine two or more PDF files into a single document directly in your browser. Upload your files, arrange them in the right order, and download the merged result in seconds.
How to Merge PDFs
Drag and drop your PDF files onto the upload area, or click to browse. The tool reads each file and shows the filename and page count. Use the arrow buttons to reorder files, then click Merge to combine them. The output downloads automatically.
Reorder and Remove Files
Before merging, you can rearrange the file order using the up/down buttons. Remove any file you added by mistake with the X button. The page count updates in real time so you know exactly how many pages the final document will have.
When to Use This Tool
Common uses include combining scanned documents into one file, joining chapters of a report, or packaging multiple invoices into a single PDF for archiving. If you need to do the opposite, try the Split PDF tool to break a document into smaller files, or the PDF Page Reorder tool to rearrange pages within a single PDF.
All processing happens client-side. Your files never leave your browser, making this safe for sensitive or confidential documents.
Frequently Asked Questions
How does this PDF merger work?
The tool uses a JavaScript PDF library to read each file you upload, then copies all pages into a new combined document. Everything runs in your browser, so your files stay on your device.
Is there a limit to how many PDFs I can merge?
There is no fixed limit, but very large files may slow down your browser since all processing happens locally. For best results, keep the total size under 100 MB.
Can I reorder the PDFs before merging?
Yes. Use the up and down arrows next to each file to change the order. The final merged PDF will follow the order shown in the list.
Will the merged PDF keep bookmarks and links?
Page content, annotations, and embedded images are preserved. However, document-level bookmarks and cross-document links may not carry over due to how PDF merging works.
Are my files uploaded anywhere?
No. All processing happens entirely in your browser using JavaScript. Your PDFs never leave your device.