PDF Merge Tool
Combine multiple PDFs into one. Upload, drag to reorder, click merge. 100% client-side with pdf-lib — your files never leave the browser. No signup, no watermark.
PDF Merge Online — Combine Multiple PDFs Into One File
Tool Introduction
PDF Merge is a free browser tool that combines two or more PDFs into a single document. Use it to bundle scanned receipts, assemble e-book chapters, join contracts with appendices, or merge reports. All processing happens in your browser using pdf-lib — your files are never uploaded, so it is safe for sensitive documents like invoices, legal contracts, ID scans, and confidential reports. No signup, no watermark, no daily limit, and the result preserves original fonts, images, and layout.
How to Use
- Click "Select PDFs" and pick two or more files (Ctrl/Cmd for multiple)
- Drag the rows to change merge order
- Click "Merge & Download" — the combined PDF saves to your device
Common Use Cases
- Bundling monthly invoices or receipts for accounting
- Combining scanned chapters into one e-book or report
- Joining signed contract pages with appendices
- Merging split PDF exports from government portals
FAQ
Q: File size limit?
A: No hard cap, but up to 50MB per source file is recommended.
Q: Does merging reduce quality?
A: No. pdf-lib preserves original streams — text stays selectable, images stay sharp.
Q: Can I merge password-protected PDFs?
A: Not directly. Unlock the source files first, then merge.
Q: Is it free?
A: Yes. 100% free, no signup, no watermark, no quota.
Pro Tips
Name files numerically (01-intro.pdf, 02-body.pdf) before uploading for easier reordering.
Need to extract pages after merging? Use the PDF Split tool on the result.
For huge files (200MB+), close other tabs first to free up memory.
📚 Related PDF Tools: PDF Merge · PDF Split · PDF Extract Text · PDF Extract Images · PDF Compress · PDF Encrypt · PDF Watermark · PDF Rotate