PDF Merger & Splitter
Merge multiple PDFs into one, or split a PDF by page ranges. Your files never leave your browser — 100% private.
🔒 100% private: All processing happens in your browser using the pdf-lib library. Your files are never uploaded to any server.
About PDF Merger & Splitter
PDF is the universal format for documents — invoices, contracts, reports, eBooks, and scanned papers. Yet combining multiple PDFs or extracting a few pages usually requires expensive desktop software or uploading files to an online service (which raises privacy concerns). This tool does both jobs entirely in your browser using the PDF-lib library: merge any number of PDFs into one, or split a PDF by page ranges into separate files. Your files never leave your device — no upload, no server processing, no privacy risk. Works on any modern browser, on desktop and mobile.
How It Works
- Merge mode: Drag and drop or select multiple PDF files, reorder them as needed, and click "Merge PDFs". The merged PDF downloads automatically.
- Split mode: Upload one PDF, choose page ranges (e.g., 1-3,5,7-9) or extract all pages as separate files, then click "Split PDF".
- Each output PDF is generated entirely in your browser using pdf-lib — no server involved.
- Download individual files or the merged result — ready to use immediately.
✨ Key Features
- ✓Merge unlimited PDF files into one document
- ✓Reorder PDFs before merging (drag-and-drop)
- ✓Split PDF by custom page ranges (1-3, 5, 7-9)
- ✓Extract specific pages as separate PDFs
- ✓Split every page into individual files
- ✓No file size limits (browser memory permitting)
- ✓No upload — 100% client-side processing
- ✓No watermark, no signup, no email required
- ✓Works on desktop and mobile browsers
- ✓Password-protected PDFs: unsupported (for security reasons)
🎯 Common Use Cases
- →Combining multiple invoices into one file for accounting
- →Merging scanned documents into a single PDF
- →Extracting specific pages from a report or eBook
- →Splitting a large PDF into chapters or sections
- →Removing unwanted pages by splitting and re-merging
- →Combining bank statements for loan applications
- →Preparing presentations from multiple PDFs
- →Reducing file size by removing unnecessary pages
💡 Advanced Tips & Pro Insights
- ▸Files never leave your browser — this is safer than uploading to any online service. Even large files are handled locally.
- ▸For very large PDFs (100MB+), the browser may take a few seconds and use significant memory. Close other tabs if needed.
- ▸Page ranges support: single pages (5), ranges (1-3), comma-separated (1,3,5), or mixed (1-3,5,7-9).
- ▸Encrypted or password-protected PDFs are not supported — decrypt them first with a PDF reader.
- ▸Merged PDFs preserve original page sizes, fonts, images, and links. Only page order changes.
Frequently Asked Questions
Is this PDF merger free?▾
Yes, this PDF merger and splitter is completely free with no signup, email, or usage limits. No watermark is added.
Are my PDFs safe?▾
Yes, 100% safe. All processing happens in your browser using JavaScript (pdf-lib). Your files are never uploaded to any server — they never leave your device.
How many PDFs can I merge?▾
There is no hard limit. You can merge as many files as your browser memory allows. In practice, merging 50–100 PDFs is fine; very large numbers depend on your device.
How do I split a PDF by page range?▾
Switch to Split mode, upload one PDF, then enter page ranges like "1-3,5,7-9" in the range field. Click "Split PDF" — each range produces a separate file that downloads individually.
Can I merge password-protected PDFs?▾
No. Encrypted PDFs cannot be merged or split without the password, and this tool does not ask for passwords for security reasons. Decrypt them first in your PDF reader.
Does merging reduce quality?▾
No. Merging only reorders pages — the content (text, images, fonts, links) is preserved exactly as it was.
Can I reorder pages before merging?▾
Yes, in Merge mode you can drag files to reorder them before clicking Merge. The order in the file list is the order in the output PDF.
Does this work on mobile?▾
Yes, the tool works on modern mobile browsers (iOS Safari, Chrome Android). For best performance with large files, use a desktop.