Free PDF Merger & Splitter Online

Merge multiple PDFs into one or split pages from a PDF — all processed in your browser.

Combining multiple PDF files into a single document is one of the most common tasks for students, professionals, and anyone working with documents. Whether you're merging invoices, combining report chapters, or assembling a project portfolio, our free tool handles it instantly.

Unlike cloud-based PDF tools that upload your files to remote servers, our merger uses the open-source pdf-lib library to process everything locally in your browser. Your sensitive documents never leave your device. No registration, no file size tracking, no data retention.

📄

Drop PDF files here

or click to select files

✂️

Drop a PDF file here

or click to select a file

🔒 Your files never leave your device. All processing runs locally in your browser.

How to Use the PDF Merger & Splitter

Combine or extract PDF pages in just a few steps:

1

Choose merge or split — Select the Merge tab to combine multiple PDFs, or the Split tab to extract pages from a single PDF.

2

Upload your files — Drag and drop PDF files onto the upload area, or click to browse. For merging, you can reorder files by dragging them in the list.

3

Process and download — Click "Merge All" or "Split & Download" to generate your new PDF. The file downloads automatically.

Frequently Asked Questions

How does the PDF merger work?
Select or drag multiple PDF files, reorder them if needed, then click Merge. The tool uses the pdf-lib library to combine all pages into a single PDF — entirely in your browser.
Is my data safe?
Yes! All processing runs locally in your browser. Your PDF files are never uploaded to any server.
Can I split a PDF into separate pages?
Yes! Switch to the Split tab, upload a PDF, enter a page range (e.g., 1-3, 5, 7-10), and download the extracted pages as a new PDF.
Is there a file size limit?
Since everything runs in your browser, limits depend on your device's available memory. Most devices handle files up to 50-100 MB without issues.
Can I reorder pages before merging?
Yes! Drag and drop files in the list to reorder them before merging. You can also remove individual files.