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Batch Merge PDFs

Create multiple merge groups, add PDF files to each group, then merge all groups at once and download as a single ZIP archive. Perfect for bulk PDF processing — no uploads, no server, no sign-up, no watermarks.

✓ Multiple Merge Groups ✓ Drag to Reorder Files ✓ Merge All → ZIP ✓ Or Download Single Group ✓ No Server Upload ✓ No Watermarks
Batch PDF Merger
Create groups, add PDFs, merge all groups at once — files never leave your browser
📦 Merge Groups 0 groups · 0 files
Processing…0%
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No merge groups yet
Click "Add Group" to create your first merge group, then add PDFs to it.

🔒 All processing runs in your browser using pdf-lib & JSZip — your files never leave your device

How Batch Merge Works
1
Create Groups
Click "Add Group" to create merge groups. Name each group — the name becomes the output filename.
2
Add PDFs
Click "Add PDFs" inside each group to select files. Drag rows to set the merge order within each group.
3
Batch Merge
Click "Merge All & Download ZIP". pdf-lib merges each group; JSZip bundles all outputs into one archive.
4
Download ZIP
Your ZIP downloads instantly with one merged PDF per group — no watermarks, no server, no account.
Frequently Asked Questions
What is batch merge PDFs?
Batch merge means processing multiple independent PDF merge operations at once. Create separate groups (e.g. Group A = project reports, Group B = invoices, Group C = contracts), add the relevant PDFs to each group, and merge all groups simultaneously — getting one merged PDF per group, all bundled in a ZIP download.
How many groups and files can I create?
No limits — create as many groups as you need with as many files as you want per group. All processing happens in your browser using pdf-lib and JSZip, so the only practical limit is your device's available RAM. For typical office documents this is rarely a concern.
Can I download a single group instead of the whole batch?
Yes — each group has an individual Download button that merges and downloads just that group's PDF without affecting other groups or generating a ZIP. Useful for testing a group before running the full batch.
Are my files uploaded to a server?
No — your PDF files never leave your device. The tool uses pdf-lib (open-source, for merging PDFs) and JSZip (open-source, for creating the ZIP archive), both running entirely client-side. No data is sent to any server, no API calls are made.

About ToollLive Free Batch Merge PDFs Tool

ToollLive's free batch merge PDFs tool is the most powerful way to merge multiple PDFs in bulk online. Create independent merge groups, add PDF files to each group, drag to reorder within groups, then batch merge all groups at once and download the results as a ZIP archive — all without uploading a single file to any server. Built with pdf-lib (open-source PDF library) and JSZip (open-source ZIP creator), this bulk PDF merger works entirely in your browser. Perfect for batch processing invoices, reports, contracts or chapter documents. Unlike simple online mergers, this PDF batch processing tool handles multiple parallel merge operations simultaneously. No watermarks, no sign-up, completely free. Also try our Combine PDFs, Rearrange PDF Pages and Split PDF tools.